20 Most Recent 1998 Buick LeSabre Questions & Answers


1998 Buick... | Answered on Nov 10, 2019

Unplug the blower motor connector then jumper 12vdc to the spade sticking out of the motor it should run if not replace it. If the motor you get comes without a fan don't loose the spacer under the fan they are special. I hope this helps, Take care. If you have further questions or just want to say Hi! Use testimonial. Thanks

1998 Buick... | Answered on Jan 14, 2019

Free wiring diagrams here http://www.bbbind.com/free-tsb/
Enter vehicle info. year , make , model etc.... Under system click on HVAC ,under subsystem HVAC controls . Click the search button then click on the second to last blue link.

1998 Buick... | Answered on Jan 13, 2019

Pump is inside the gas tank

1998 Buick... | Answered on Mar 12, 2018

1. Insert key in ignition and leave in the OFF position
2. Locate the Data Link Port. It is located under dash drivers side. Be sure you know which pins are 8 and 4. (Note port is wider at top) Your OBDII port will not
have numbers.

3. Make sure there are metal contact pins in terminals 8 and 4. Connect 8 to 4 with a
suitable jumper wire (leave the jumper wire connected throughout the programming
procedure). Make sure you know which terminals are 8 and 4. The vehicle will respond
by locking and unlocking the doors to signify entering of programming mode.

4. Close doors.

5. Turn ignition to the ON position (as far as you can go without cranking the engine).
Doors will lock.
6. Press and hold both the LOCK and UNLOCK buttons together on the first transmitter to
beprogrammed. After about 15 seconds, the vehicle will respond by locking and
unlocking the doors. Release the buttons on the transmitter.7. Within one minute, repeat the previous step on the remaining transmitters to be

8. Remove jumper wire applied to the OBDII Port.

1998 Buick... | Answered on Mar 09, 2018

Park neutral safety switch , try moving gear selector to neutral . If that doesn't let it start ,viewing wiring diagrams an testing the starter electrical circuit's with a DVOM - digital volt ohm meter .
How to voltage drop test starter motor circuit
Electric Testing Techniques You Need to Know

Learning the correct way to test will avoid hitting those walls .
Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine . Under system click on engine ,then under subsystem click on charging . two diagrams , one is the starter electrical circuit . Click search button then the second blue link. Is the security light lit on the instrument cluster ? This will keep it from starting .

1998 Buick... | Answered on Feb 04, 2018

The 3.8 L is not included with the list of GM interference engines. So it is NON

1998 Buick... | Answered on Feb 02, 2018

Don't waste your money on unnecessary sources and unwanted repairs...
Get this manual online under $10-15 and get complete guide on whether to repair or not, service it, and how to repair etc

1998 Buick... | Answered on Feb 01, 2018

Wiring, schematic, electrical diagrams, fuse d iagrams etc are basic contents of these online books they sell here on this website
or also try manualslife com
both have very good mechanics

1998 Buick... | Answered on Jan 31, 2018

voltage is a bit low. have you tried rotating the engine by hand with a socket on the crank., just to see if the engine is free to move. if the starter engages but not turn, it could be the voltage as they can be regulated this would stop it from flattening the battery via the solenoid, its usually around the 11 volts mark on some types. as low volts will damage the battery. or the battery amperage is not good.

1998 Buick... | Answered on Jan 17, 2018

How long does it take to swap out a heater coil in a 1999 Buick LeSabre

1998 Buick... | Answered on Jan 13, 2018

Hard to say - using the data port to program a remote is unusual, and depending on what device or procedure you used, you may have screwed up the datalinks. You should start by using a code reader to see what trouble codes exist.

1998 Buick... | Answered on Jan 10, 2018

Starter enable relay is under the hood in a fuse box that runs along the bottom of the windshield wipers, there are (2) twist knobs and (1) wing nut in the far left hand corner of the fuse box cover. remove cover. now you will see a group of smaller fuse box remove covers and look inside there will be I.D. to tell you which is which.

Looking at the end of the solenoid on top of the starter, the battery cable hooks to the larger stud on the top "12 o'clock". A smaller purple wire connects to the smaller terminal at 3 o'clock and the stud at 6 o'clock connects to the flat wire coming out of the starter. The purple wire comes from the neutral/park safety switch, which is fed by a yellow wire coming from the start relay which is fed by a yellow wire coming from the ignition. The start relay is also controlled by the Pass Key decoder module. Hope this helps, as for starters.
Check the fuel pump relay

The fuel pump relay is located to the right of the glove box.

Remove three 8mm screws (along the front edge) and a wingnut (drivers side near the accelerator) to loosen the insulation panel. Twist out the light courtesy light and using a pair of pliers squeeze the plastic nipple to remove the SIR. Remove the insulation panel from the vehicle.

After the insulation panel is removed, the fuse/relay panel will be to the right of the glove box. The insulation panel should have a diagram of the fuse/relay panel layout.

The relay should be in the left column of relays just above the fuses.

A Good contortionist with small hands and this can be done in about 15 mins.

1998 Buick... | Answered on Nov 25, 2017

Try spraying some carb. cleaner or starting fluid into the engine . If it starts you have a fuel delivery problem , if not check for spark .

1998 Buick... | Answered on Oct 02, 2017

What shop did you take it to ? The charging system on your vehicle is computer controlled and so is the volts indicator gauge. Have you tried the buick dealer ?

1998 Buick... | Answered on Aug 18, 2017

Hey Baptized,
You need to replace ALL the gaskets that seal coolant from ANYTHING... You may have a cracked head, cracked intake manifold,, or at worse a cracked block - between the coolant passages and the combustion chamber area...If you have a aluminum intake and cast iron heads.. this is a potential leak creator when the engine gets hot and cold quickly...make sure ALL the gasket surfaces are CLEAN.. and use:

DO NOT use silicone sealant - period!

1998 Buick... | Answered on Jul 03, 2017

not exactly sure but using info below you can find it.

Remember the flow for the a/c system is :
1. From the compressor a high pressure (HP) gas goes to the condenser in front of the radiator.
2. From the condenser a HP liquid goes to an expansion device (orifice tube or expansion valve)
3. From expansion device the low pressure gas enters the firewall to the evaporator.
4. From evaporator the low pressure liquid/gas mixture goes through the dryer2_bing.gif back to the compressor suction.

There will be about a 1" nut on the low pressure line between the firewall and the compressor. Remove nut and on the male side use a pair of kneedle nose pliers and remove orifice tube. Note orientation of tube.

Replace tube, reassemble, evacuate air from system, recharge with freon.

1998 Buick... | Answered on Jun 05, 2017

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