20 Most Recent 1998 Pontiac Bonneville - Page 3 Questions & Answers

Use a obd code reader to read the check engine light first. Then see what the fault is.

1998 Pontiac... | Answered on Dec 14, 2014

Warped heads and blown head gaskets Water fouling the spark plugs is the reason it won't start. Heavy engine repairs need to be done before it seizes up compleyely

1998 Pontiac... | Answered on Dec 06, 2014

The AC will not cool enough. If it's too low the compressor will not run because there are safety pressure switches that prevent compressor destruction .

1998 Pontiac... | Answered on Dec 06, 2014

Can you identify what kind of fluid it is? We can be more helpful if we knew that.

1998 Pontiac... | Answered on Dec 06, 2014

There is a speed resistor that can open stopping current flow to the motor. The motor itself can be open. The fan control switch can be bad too.

1998 Pontiac... | Answered on Dec 06, 2014

Head light switch is bad.

1998 Pontiac... | Answered on Dec 06, 2014

Change out the flywheel from the old motor.

1998 Pontiac... | Answered on Dec 06, 2014

Map sensor is bad

1998 Pontiac... | Answered on Dec 06, 2014

this is best way i know is to fill resevoire with fluid open all bleeders up let it start dripping out of them keeping fluid full in resivoire do this until bleeders leaking real good then shut all bleeders put cap on master cylinder crank car check feel of brakes now if pedal still soft then bleed brakes with car not running check again with car running still soft bleed again with car running

1998 Pontiac... | Answered on Sep 26, 2014

not sure if this is what you mean but I have 2 ways.... Make sure the key fob you purchase looks like the one you originally had, and is a GM key fob. Once you have it, open the fob, pop out the rubber insert, pull out the chip, and carefully slide the battery completely out. (If the batteries dead replace it now) Now reassemble the same way you just took it apart, walk out to your car, and hold both the lock and un-lock at the same time for 'bout 7 seconds. Your car should now be accessable with the key... That will only work if the remote was already "married" to the car using the GM ODBD2 scan tool or (for your car).... OR the following procedure: 1996-1998 Bonneville
1) Turn OFF ignition switch
2) Use a 3 amp fused jumper wire and connecte the terminal 8 (blk/wt) and terminal 4 (blk) wires at the data link connector. The data link connector is located on the drivers side bottom of dash panel 3) Close all the doors 4) Turn ON the ignition switch. The locks will cycle to LOCK 5) Press and hold LOCK and UNLOCK on one of the transmitters for 30 seconds. 6) After a 30 second delay the doors will LOCK and UNLOCK. DO NOT TURN OFF THE IGNITION! 7) Repeat step 5 for each additional transmitter 8) Disconnect jumper wire from data link connector. Then turn ignition off and verify functions. eBay is a good source for a replacement transmitter, but understand that they are NOT interchangeable. You must use the ONE that is meant for your car.

1998 Pontiac... | Answered on Sep 24, 2014

Check the key and make sure its is the correct one, pass lock is a pain, and sometimes the reader\transponder can go south. I would bypass it and go around the problem this can be done with a resistor.

1998 Pontiac... | Answered on Sep 23, 2014

The security light picture/icon is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle.

1998 Pontiac... | Answered on Sep 22, 2014

Inspect all your ground wires and the wires to the starter and make sure good and tight

1998 Pontiac... | Answered on Sep 21, 2014

There is only one fan relay, you might check on the blower motor resistor or the blower motor itself, they are both prone for going out. If you have a test light unplug the motor and test to see if you have power getting to it, if you do then you need to replace the motor, if not check for power at the resistor.

1998 Pontiac... | Answered on Sep 06, 2014

Both seats are self-contained. Have their own motors, wires, plugs and fuses. Check all this and see if one of them is the issue.

1998 Pontiac... | Answered on Aug 06, 2014

Only Ford products have an inertia switch for the fuel pump.

1998 Pontiac... | Answered on Aug 05, 2014

I'll bet your "Check Engine" light is on. Have someone read the error codes with an OBDII scan tool - that'll point you to the problem, at least, of the car not starting.

1998 Pontiac... | Answered on Aug 04, 2014

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