1998 Pontiac Sunfire - Answered Questions & Fixed issues

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Pontiac sunfire overheating

I have your fix, Disconnect your Heater Core hoses and flush out the Heater Core or replace it. The coolant has to pass through the Heater Core before it gets to the Thermostat. GM designed the cooling system this way to speed up in-cab heating.
1/13/2023 3:14:02 AM • 1998 Pontiac... • Answered on Jan 13, 2023 • 10,438 views
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How to get the back seat of 98 pontiac sunfire to let down with the latch broken?

Find yourself another 98 Pontiac sunfire somewhere, and ask the owner to let you see the mechanism, so you can repair it. You might be crawling inside the trunk and unscrewing the latch or lock in there to release it, and then finding a used pull lever somewhere, or make one from scratch. God bless your efforts.
4/29/2018 1:12:39 AM • 1998 Pontiac... • Answered on Apr 29, 2018 • 238 views
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Have. 98 Pontiac Sunfire. Have problem with stay running after start A few seconds after start AntiTheft light comes on, car dies. Car runs fine,Till light comes on.

Very common. Diagnose and usually have to replace the lock cylinder case. Read this post on Passlock failures Passlock fixes Ricks Free Auto Repair Advice
4/25/2018 12:46:25 PM • 1998 Pontiac... • Answered on Apr 25, 2018 • 221 views
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Trying to reset theft system on a 98 Pontiac sunfire dut the light don't go out after 10 min. what do i do

By-pass the anti-theft . Videos on youtube showing how too . How to troubleshoot bypass GM VATS Passlock Passkey System
4/2/2018 8:27:46 PM • 1998 Pontiac... • Answered on Apr 02, 2018 • 2,005 views
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98 sunfire Theft light on and will not accept a reset. Light stays on permanently will not go out to do 10 min reset as described that it should go out or start to blink

My friend is a part time mechanic he gets his solutions from www.reliable-store.com he gets from their every single detailed info, instructions etc. on all vehicles, and manuals like service, repairs, parts, owner's, operations, maintenance etc. U can get help from there there is a girl at chat she can help you
3/20/2018 5:07:30 PM • 1998 Pontiac... • Answered on Mar 20, 2018 • 648 views
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1998 Pontiac Sunfire wont start

Fuel pump. Pressure low. Needs a pump. Car runs very rough for 5 seconds and dies?
1/3/2018 3:39:01 AM • 1998 Pontiac... • Answered on Jan 03, 2018 • 176 views
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( 1998 Pontiac sunfire ) Is it possible just to

Security light lit on the instrument cluster ? It should have anti-theft system . No , can't just remove it . It has componets - key lock cylinder housing , software programmed into control modules etc... If you just removed or disconnected the pass lock sensor the pcm -engine computer would not see a coded message ,so it would disable fuel injectors an maybe starter . Your best bet ,have a qualified repair shop diagnose it .
12/8/2017 6:53:11 PM • 1998 Pontiac... • Answered on Dec 08, 2017 • 185 views
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Wrong alternator in 1998 pontiac sunfire

http://www.bbbind.com/free_tsb.html Free wiring diagrams . Enter the vehicle info. Year , Make , Model and Engine size . Under system click on engine then under subsystem click on charging .Click the search button then the blue link . Scroll down to second diagram .
10/5/2017 11:26:07 AM • 1998 Pontiac... • Answered on Oct 05, 2017 • 147 views
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I have a 1998 Pontiac Sunfire with the 2.2l and I cannot figure out how to wire the starter up. This is a picture of the starter in the car now, can anyone give me advice?

The larger terminal goes straight to the battery. It looks like it does have a battery cable on it though. The smaller terminal bolt appears to have no wire on it. This is the one that switches on the starter. It should go to a solenoid or electronic box. But there has to be a wire on it going to the ignition system.
9/28/2017 4:00:04 AM • 1998 Pontiac... • Answered on Sep 28, 2017 • 113 views
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I have a 98 sunfire 2.2 the idle started lobing up and down with iac code changed iac, tps, coil packs, fuel filter if its running at idle i can put my finger over iac port in the throttle body and i

Dirty throttle body . Does it run good when you step on the gas pedal ? driving down the road . Don't guess , do fuel pressure testing . Videos on youtube showing how , fuel pressure tester under $30 most part stores .
8/6/2017 11:24:49 AM • 1998 Pontiac... • Answered on Aug 06, 2017 • 131 views
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I own a 2000 sunfire(4 door) and the dash lights,

Check the inst lps fuse in the middle of the fuse panel left dash. 0900c1528003d019-tedh1mdkpnm2cwqabpnjpaem-1-0.gif 0900c1528003cff1-tedh1mdkpnm2cwqabpnjpaem-1-2.gif
7/22/2017 5:06:22 PM • 1998 Pontiac... • Answered on Jul 22, 2017 • 158 views
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1998 Pontiac Sunfire Symptoms: -Overheating

What are you going by to say it's overheating , temp gauge ? Have you test to see what the actual temp. is > Hook - up a scan tool ,what's the PCM - engine computer seeing for engine temp. ? 223 degress the PCM should turn on the cooling fan . You could buy a Non-Contact Infrared Thermometer With Laser Targeting at harbor freight ! Radiator very hot ????? What is the right temp . Non Contact Infrared Thermometer With Laser Targeting Could be a bad temp gauge . Is the coolant surging inside the cooling system ? Does it have a radiator cap ? Have you replaced it ?
5/6/2017 2:07:29 PM • 1998 Pontiac... • Answered on May 06, 2017 • 488 views
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My car started perfect this morning went into the store came out and complete loss of power wont turn over no light no radio completely dead

sounds like the battery may have gone or possibly even the alternator as it may not have been charging the battery - you need to have it checked out first
4/20/2017 5:51:55 PM • 1998 Pontiac... • Answered on Apr 20, 2017 • 147 views
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1998 Pontiac Sunfire GT.

If i were you i wouldn't worry about the second relay too much .because there is only one , the DRL relay !Guessing never fix's automotive electrical problems ! Testing is the name of the game , with the aid of wiring diagrams an reading an understanding how the electrical circuits work . An learning how to diagnose correctly . Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts How to Use Multimeter to Troubleshoot Common Problems YouTube The Trainer 29 Understanding How Electrical CIrcuits Work and How to Test... The instrument cluster controls the headlamp systems that include daytime running lamps (DRL). The system allows the headlamps to operate at a reduced intensity when all of the following conditions apply: • The engine is running. • The transaxle is not in the PARK position. • The normal headlamps are not on. The instrument cluster turns the DRL system on by grounding CKT 592, thereby energizing the DRL relay. This action allows a reduced voltage of 6 volts to flow across the headlamps. If the vehicle has the optional fog lamps, the fog lamp relay will also be energized. The park lamps will turn on and the fog lamps will operate normally. When the headlamp switch is turned to the ON position, the instrument cluster allows normal headlamp operation. The instrument cluster also has an input from the park brake. If the park brake is in the ON position, the DRL will remain disabled until the park brake is placed in the OFF position. On vehicles with an automatic transaxle, the instrument cluster will disable the DRL until the transaxle has been taken out of the PARK position. Headlamps A rocker type switch is located on the left side of the instrument panel (IP). The rocker type switch controls the headlamps. One switch position turns on the following lamps: • The parking lamps • The side marker lamps • The taillamps • The license plate lamp • The IP lamps • The interior lamps The second switch position turns on the headlamps in addition to all of the above lamps. An IP lamp dimmer control is provided in order to vary the intensity of the IP lamps. Turn the control past the full bright detent in order to turn on the courtesy lamps. The under hood lamp is designed to turn on under the following conditions: • When the hood is raised • When the parking or headlamp switch is on You probably have a open circuit in the wiring for the passanger high beam . Your best bet would be to have a qualified repair shop check it out . May have a broken wire somewhere in the wiring harness .
4/4/2017 11:31:18 AM • 1998 Pontiac... • Answered on Apr 04, 2017 • 187 views
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I just need to know the name of the device in the steering column that controls the high/low beams and the blinker???

The dimmer switch is for high/low beams, and the turn signal switch is for the blinkers. When they are combined, it is called a multi-function switch.
1/18/2017 1:02:19 AM • 1998 Pontiac... • Answered on Jan 18, 2017 • 183 views
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Hi my name is Larry I have a 1998 Pontiac sunfire & my problem that I have is I have low beam. But no high beam.

It's probably the switch , but testing to know for sure is alwasy a good idea . Headlamps Inoperative - High Beams Step Action Value(s) Yes No 1 Did you perform the Daytime Running Lamps (DRL) System Check? -- YES - Go to Step 2 NO - Go to Daytime Running Lights (DRL) System Check 2 Disconnect the turn/hazard headlamp switch connector C1. Connect a fused jumper between terminal B of the turn/hazard headlamp switch assembly harness connector C1 and ground. Do the high beam headlamps operate? -- YES - Go to Step 3 NO - Go to Step 4 3 Replace the turn/hazard headlamp switch assembly. Did you complete the repair? -- Go to Daytime Running Lights (DRL) System Check -- 4 Repair the open in CKT 1200 between the turn/hazard headlamp switch assembly. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? Daytime Running Lights (DRL) System Check Step Action Normal Result(s) Abnormal Result(s)* 1 Turn the headlamp switch to the HEAD position. Turn the headlamp dimmer switch to the LOW position. The low beam headlamps are ON. The high beam headlamps are OFF. Headlamps Inoperative - Low Beams 2 Turn the headlamp switch to the HIGH position. The high beam headlamps are ON. The high beam indicator is ON. The low beam headlamps are OFF. Headlamps Inoperative - High Beams 3 Turn the headlamp switch OFF. Turn the ignition to ON. Disengage the parking brake. The high beam headlamps come ON at a reduced intensity in approximately 30 seconds. Daytime Running Lamps (DRL) Inoperative, Headlamp Switch Operates Normally * Refer to the appropriate symptom diagnostic table for the applicable abnormal result.
1/17/2017 11:19:31 AM • 1998 Pontiac... • Answered on Jan 17, 2017 • 235 views
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Fan does not run when stop car over haets

Try changing temperature sending unit sometimes its located in radiator . Just below radiator cap you will see wires.check connections on fan. check selenoid in electrical panals understand hood grey or black relays. Cover will say fan one fan 2 . if not that try changing your thermostat check fluids. warm car up an open blender screw on thermostat housing. Tighten when all air is bled out.
12/14/2015 1:29:15 AM • 1998 Pontiac... • Answered on Dec 14, 2015 • 86 views
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Odometer display not lighting up

you need to remove the complete dial display to access the individual bulbs at the back to do that all dash trim around the dial display must be carefully removed to expose the screws to get the display out be careful when getting it out the dash the display loom must still be unplugged usually the length of the loom is just enough to get ur hand in to unplug
11/6/2015 6:51:10 AM • 1998 Pontiac... • Answered on Nov 06, 2015 • 188 views
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OVERHEATING

if it has a viscous fan hub ( fan clutch) the replace it if it electric fans check them for correct operation
10/25/2015 7:41:15 AM • 1998 Pontiac... • Answered on Oct 25, 2015 • 206 views
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Rain or shine water on front & rear floor of '98 Sunfire convertible; seats & interior dry. Removed heater core but water still there. AC needs charging so not using it.

My sister's and my brothers GM hardtops both leaked like yours is doing. My sister got hers fixed, my brother opted not to do so. The leaks turned out to be body leaks from the factory from water running in body openings at the windows and body joints. I believe my sister had to have the fenders pulled off to fix it. God bless your efforts.
8/27/2015 8:46:27 PM • 1998 Pontiac... • Answered on Aug 27, 2015 • 196 views
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