Driving car with leaking intake manifold gasket?

Many car users ask this question.
 " Can i drive with intake gasket leaking or How long can i drive with intake manifold leaking"
The simple answer is no.Its not advisable.

You will definitely notice overheating due to gasket leaking.

You take a big risk on ruining the motor which will cost you more in the long run ,if the coolant is getting into the oil ,check the dipstick for the oil and see if the oil is a lt brown or gold color ,this indicates that the coolant is getting into the oil ,and if left alone it will ruin the motor (bearings,)Also you dont want to keep overheating the motor you can crack or warp the heads , it is better to replace the intake gasket now and save you the headache of a new motor or heads,,the coolant is more than likely getting into the oil.

Replacing intake manifold gasket is advisable.

This details will help.Thanks.

---------------

For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

---------

The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

-----------------

Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

-----------

Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

-------------

How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

-----------------

How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

--------------------

How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------

car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

-----------------

Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

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OBD code P0742 on 2002 buick century custom?

Check engine lights gets on steady,and you notice TCC (torque converter clutch) getting stuck on/off or its getting very loose.

You get your car scanned and it shows error code P074
This problem is noticed by many Buick car users.
There is service bulletin released by company,in related to this problem.
Get this problem inspected by your dealer and get it repaired.

A/T - 4T65E Poor Performance/Harsh Shifts/DTC's Set

Incorrect Transmission Shifts, Poor Engine Performance, Harsh 1-2 Upshifts, Slips 1st and Reverse, Torque Converter Clutch (TCC) Stuck Off/On, DTCs P0757, P0741, P0742, P0730, P0756 


 (May 20, 2005) Models:
2001-2005 GM Passenger Cars with 4T65-E Automatic Transmission
2001-2005 Buick Rendezvous
2005 Buick Terraza
2001-2004 Chevrolet Venture
2005 Chevrolet Uplander
2001-2004 Oldsmobile Silhouette
2001-2005 Pontiac Aztek, Montana
2005 Saturn Relay

with 4T65-F Transmission (RPOs M15, MN3, MN7, M76)

This bulletin is being revised to include additional diagnostic information and clarify model usage. Please discard Corporate Bulletin Number 02-07-30-013D (Section 07 -- Transmission/Transaxle).

Condition

Some owners may comment on any one or more of the following conditions:

^	The SES lamp is illuminated.
^	The transmission slips.
^	The transmission does not shift correctly, is very difficult to get the vehicle to start moving or the engine lacks the power to move the vehicle.
^	Poor engine performance.

Cause

The most likely cause of the various conditions may be chips or debris:

^	All years--Pressure Reg. Valve (Bore 1) or Torque Signal Valve (Bore 4) stuck
^	On 2001-2002 vehicles, a plugged orifice on the case side of the spacer plate.
^	ON 2003-2005 vehicles, restricted movement of the 2-3 shift valves in the valve body.
^	On 2003-2005 vehicles, restricted movement of the 3-4 shift valves in the valve body.

Technician Diagnosis and Correction

^	The technician's road test reveals the vehicle launches in third or fourth gear (high RPM with slow vehicle acceleration).
^	On 2001-2002 vehicles, a DTC P0756 or P0757 may be stored.
^	On 2003-2005 vehicles, a DTC P0730, P0741, P0748 or P0757 may be stored.
^	Refer to the appropriate Service Information (SI) for additional Diagnostic Assistance.
^	With a Tech 2(R) connected to the vehicle, road test the vehicle and perform the following steps: If the above symptoms are present proceed with the following steps.
1.	With the valve body removed and on a workbench, carefully push the valve against spring pressure to check if the valve will snap back to the original position. Or for the valves seated in home position, use a small flat-bladed screwdriver and carefully pry the valve off its seat, quickly remove the screwdriver allowing the valve to return to its seat. If the valve does not snap back unencumbered, then the valve will need to be removed from the valve body.

2.Once the valve is removed, inspect for any scratching or scoring. 3.If any scratching or scoring is found, then the fingernail test will need to be performed. Important: It has been found that in most cases that the scratches are not severe enough to catch your fingernail. 4.Using your fingernail, move over any scratches to see if your nail will catch on the scratch or score. - If your nail catches in the scratches, the valve will need to be replaced. - If your nail does not catch in the scratches, continue with the next step. 6.Important: Clean the valve body with the machined side down so debris may escape. 7.Clean the valve and bore using brake cleaner. 8.Blow off with shop air. 9.To verify free movement of the valve, dip the valve into clean ATF and install the valve back into the appropriate bore. The valve should move freely. If the valve moves freely, in most cases the valve body will function properly when reinstalled.10.Reassemble and retest

This details will help.Thanks.

---------

For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

---------

The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

-----------------

Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

-----------

Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

-------------

How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

-----------------

How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

--------------------

How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------

car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

-----------------

Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

----------

How to Replace and Relearn Crankshaft Position Sensor on Buick lesabre?

Removing and replacing crankshaft position sensor is possible.You can do it, but to relearn the senor,you should have scan tool.With that tool only you can do relearn procedure.

The replacing and relearn procedure for crankshaft position sensor is mentioned below:---

This are the list of Tools Required to do this task:---

^ J 36660 Torque/Angle Meter.

^ J 37096 Flywheel Holding Tool.

^ J 38197 Balancer Remover.

REMOVAL PROCEDURE

1. Disconnect the negative battery cable.

2. Remove the serpentine belt(s) from the crankshaft pulley.

3. Raise the vehicle on a hoist.

4. Remove the right front wheel and tire assembly.

5. Remove the right inner fender access cover.

6. Hold the flywheel with J 37096 Flywheel Holding Tool.

7. Using 28 mm socket, remove the crankshaft harmonic balancer retaining bolt.

8. Remove the crankshaft harmonic balancer using special tool J 36197 Balancer Remover.

9. Remove the crankshaft position sensor shield (1) (Do Not use a pry bar).

10. Disconnect the sensor electrical connector.

11. Remove 2 attaching bolts from the crankshaft position sensor.

12. Remove the crankshaft position sensor from block face.


See the diagram below showing crankshaft sensor:---

INSTALLATION PROCEDURE

1. Position the crankshaft position ((CKP) Crankshaft Position) sensor to the block.

2. Install the bolts to hold the CKP sensor to the block face.
^ Tighten the bolts to 20-40 Nm (14-28 ft. lbs.).

NOTICE: Refer to Service Precautions / Fasteners.

3. Install the crankshaft position sensor shield.

4. Connect the CKP sensor electrical connector.

5. Position the crankshaft harmonic balancer on the crankshaft.

6. Hold the flywheel with J 37096 Flywheel Holding Tool.
^ Tighten the harmonic balancer bolt to 150 Nm +76 (110 ft. lbs. + 76°).

7. Install the right inner fender access cover.

8. Install the right front wheel and tire assembly.
^ Tighten the lug nuts to 140 Nm (104 ft. lbs.).

9. Lower the vehicle.

10. Install the serpentine belt(s).

11. Connect the negative battery cable.

12. Perform the Crankshaft Position System Variation Learn Procedure. Refer to Powertrain Control Module / Service and Repair / Replacement / Programming.



Relearn procedure:---
The crankshaft position system variation compensating values are stored in the PCM non-volatile memory after a learn procedure has been performed. If the actual crankshaft position system variation does not match the crankshaft position system variation compensating values stored in the PCM, DTC P0300 may set (refer to DIAGNOSTIC AIDSfor DTC P0300).
The Crankshaft Position System Variation Learn Procedure should be performed if any of the following conditions are true:

^ DTC P1336 is set.

^ The PCM has been replaced.

^ The PCM has been reprogrammed.

^ The engine has been replaced.

^ The crankshaft has been replaced.

^ The crankshaft harmonic balancer has been replaced.

^ The crankshaft position sensor has been replaced.

CAUTION: Set the vehicle parking brake and block the drive wheels when performing the Crankshaft Position System Variation Learning Procedure. Release the throttle immediately when the engine starts to decelerate. Once the learn procedure is completed, the PCM will return the engine control to the operator and the engine will respond to the throttle position.

IMPORTANT: Begin the crankshaft position system variation learn procedure with the ignition switch OFF. Do not turn ON the ignition switch or start the vehicle unless instructed to do so by the scan tool.

The scan tool crankshaft position system variation learn function will be inhibited if any powertrain DTCs other than DTC P1336 are set before or during the crankshaft position system variation learn procedure. Clear DTCs before attempting to perform the crankshaft position system variation learn procedure. If any DTCs reset, the DTCs must be diagnosed and repaired before the crankshaft position system variation learn procedure can be successfully completed.

The crankshaft position system variation learn function will be inhibited if the PCM detects a malfunction involving the camshaft position signal circuit, the 3X reference circuit, or the 18X reference circuit.

^ If the scan tool indicates that a problem with the camshaft position signal exists, refer to DTC P0341 Camshaft Position (CMP) Sensor Circuit Performance.

^ If the scan tool indicates that a problem with the 3X crank signal exists, refer to DTC P1374 3X Reference Circuit.

^ If the scan tool indicates that a problem with the 18X crank signal exists, refer to DTC P0336 18X Reference Signal Circuit.

The scan tool crankshaft position system variation learn function will not be enabled until engine coolant temperature is greater than 70°C (158°F). Selecting the crankshaft position system variation learn procedure on the scan tool will command the PCM to enable (CKP) Crankshaft Position system variation learn fuel cutoff and allow the crankshaft position system compensating values to be stored in the PCM. The PCM must detect an engine speed of 5150 RPM (CKP system variation learn fuel cutoff) during the crankshaft position system variation learn procedure to store the crankshaft position system compensating values and complete the procedure.

1. Set the parking brake.

2. Block the drive wheels.

3. Ensure that the hood is closed.

4. Start the engine and allow engine coolant temperature to reach at least 70°C (158°F).

5. Turn OFF the ignition switch.

6. Select and enable the crankshaft position variation learn procedure with the scan tool.

7. Start the vehicle

8. Ensure that the transaxle is in Park.

9. Apply the brake pedal firmly.

10. Increase accelerator pedal position until CKP system variation learn fuel cutoff is reached. CKP system variation learn fuel cutoff is reached at 5150 RPM. Immediately release the accelerator pedal when fuel cutoff is reached.

11. The crankshaft position system variation compensating values are learned when RPM decreases back to idle. If the procedure terminates, refer to (Important) above for instructions.

12. Observe DTC status for DTC P1336.

13. If the scan tool indicates that DTC P1336 ran and passed, the crankshaft position system variation learn procedure is complete. If the scan tool indicates DTC P1336 failed or not run, check for other DTCs. If no DTCs other than P1336 are set, repeat the crankshaft position system variation learn procedure as necessary.

This is complete detail.This will help you.

Thanks.

----------

For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

---------

The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

-----------------

Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

-----------

Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

-------------

How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

-----------------

How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

--------------------

How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------

car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

-----------------

Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

----------

security light is ON and engine will not start on Buick Century?

Car not starting due to security light ON.
Its a error issue.
There is definitely an error stored in your cars computer and you will need to get the car scanned to retrieve the error.The error will point out what is faulty and you can look into that parts and inspect the part and confirm the problem.
About the only thing you can try without any diagnostic equipment is to attempt a security system relearn; this may allow you to get the car started so you can drive it in to be repaired. Here is the procedure as follows, which takes 30 minutes:
(1) Turn the key to the run position; the security light should come on. Leave it in this position for 10 minutes, untill the light goes out.
(2) Cycle the key off and back to run; the light will be back on. Again, allow it to sit for 10 minutes untill the light goes out.
(3) repeat this for a third time, and wait untill the light goes out.
(4) once the light goes out for the 3rd time, try to start the engine.

If this makes the engine start, the car is still not repaired but you can drive it in to a shop to be diagnosed. if not, then there is a component failure and you wioll need to have it towed in.
To determinewhat is worng a tech-2 scan tool is needed. This isthe factory scan tool that all dealerships and many independent repair shops have, and it is the only scan equipment that can access the security features on Gm vehicles to retrieve security fault codes and view live security system data for diagnosis.
Common failures on this model include ignition lock cylinders (which contain a signal generator), body controllers, and poor electrical connections in the system.

This details should help you.

Thanks.

------------

For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

---------

The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

-----------------

Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

-----------

Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

-------------

How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

-----------------

How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

--------------------

How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------

car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

-----------------

Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

----------

Cooling fan is not coming on when engine reaches full operating temperature on Buick Century?

This problem is faced by many other car users too.
The cooling fan comes ON,when the temperature reaches at certain level.
ON Buick models the fan will not turn on untill it reached 225 to 230 .make sure radiator cap is on and coolant system is bled and all the air is out.But the fan will not come on untill 225 to 230.
Another possibility can be problem with temperature sensor.There are two temperature sensor and one fan relay.By pass the relay and see ,if fan turns on,this indicates relay is faulty.
The fan runs off the computer sensor.By the 2 wire coolant sensor.Then once it hits 225 to 230 the ECM will turn on the fan.Make sure the coolent system is bled put the cap on and run it at idle.If the sensors are faulty it will not show acurate readings the computer is getting.In that case replace the temperature sensors and then watch the gauge the needle should get to above 3/4 like 1/2 way between 3/4 and the red and then the fan should kick on.If you bleed the air out of the coolant system it should work fine.If the needle gets to the red shut it off.just when it hits the red will NOT damage anything.But if you still keep it on,cooling components may get shorted and you will even notice overheating issues.
This details will help you to confirm the problem.Thanks.

-----------

For car AC related and Heater related solutions. You can refer the options mentioned below:---

Car AC Blows Warm Air ?

http://technoanswers.blogspot.com/2011/10/car-ac-blows-warm-air.html

How to test AUTO AC pressure?

http://howtobyme.blogspot.com/2011/10/how-to-test-auto-ac-pressure.html

AUTO Air Conditioning Troubleshooting?

http://technoanswers.blogspot.com/2011/10/auto-air-conditioning-troubleshooting.html

AUTO A/C COOLING PROBLEM?

http://technoanswers.blogspot.com/2011/10/auto-ac-cooling-problem.html

Fixing refrigerant leak?

http://howtobyme.blogspot.com/2011/10/how-to-fix-refrigerant-leak.html

How to locate Car AC Refrigerant leak?

http://technoanswers.blogspot.com/2011/10/how-to-locate-car-ac-refrigerant-leak.html

CAR AC INTERMITTENT COOLING?

http://technoanswers.blogspot.com/2011/10/car-ac-intermittent-cooling.html

What causes INTERMITTENT COOLING on Car AC system?

http://technoanswers.blogspot.com/2011/10/what-causes-intermittent-cooling-on-car.html

Car AC making Noise?

http://technoanswers.blogspot.com/2011/10/car-ac-making-noise.html

BAD ODOR ON CAR AIR CONDITIONER?

http://technoanswers.blogspot.com/2011/10/bad-odor-on-car-air-conditioner.html

How to Recharge Car's Air Conditioner

http://repairhelpcenter.blogspot.com/2011/10/how-to-recharge-cars-air-conditioner.html

Transmission control solenoid location on Buick Century?

On Buick century ,there are many solenoids and on your transmission they are behind the side cover of the transmission.

To get at them you need to remove the transmission to get the side cover off so you can access the valve body.

First you will have to inspect and confirm which solenoid is faulty.

Always get branded parts,instead of local cheap auto parts.Branded parts are bit costly,but they last long then local auto parts.Replacing solenoid is not very difficult, but testing the solenoid is bit time consuming.

Thanks.