1998 Pontiac Grand Prix - Answered Questions & Fixed issues
98 grand prix battery keeps loosing its charge
First you will need to determine if its your battery or your charging system.If possible borrow a battery load tester.You can also purchase one for about 15 to 20 dollars.If the results are good then you most likely have a problem with your alternator.You can have it tested also at an auto parts store before you buy a new one. You could have an electrical short also.Please let me know if the battery and alternator is not the problem and I will research possible electrical shorts and where they would be located.
7/5/2022 12:35:57 PM •
1998 Pontiac...
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Answered
on Jul 05, 2022
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144 views
Where is fuse for hud in my 1998 pontiac grand prix
The instrument cluster HUD and the instrument cluster HUD dimmer switch are both connected to the instrument panel wiring harness.
The instrument cluster HUD dimmer switch performs the following functions:
• Provides power to the instrument cluster HUD
• Varies the intensity of the display image
• Controls the motor driven mirror
• Varies the height of the display image
The HUD dimmer switch gets power from IP / IGN fuse -10 amp Fuse Block
Right side of the IP, in the IP compartment opening
3/4/2021 11:45:53 PM •
1998 Pontiac...
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Answered
on Mar 04, 2021
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333 views
Dash board clock will not light up any more.
I had the same problem on my 2002 Pontiac Grand Prix GT. I sent my radio out for repair of illumination. You can find online places that will provide shipping labels for sending the radio in and returning it back to you.
12/18/2017 12:16:06 PM •
1998 Pontiac...
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Answered
on Dec 18, 2017
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119 views
My 98 pontiac grand prix sometimes will die going
Might be your fuel pressure regulator.. also your car might be vapor locked.Next time it shuts off loosen your gas cap... If you hear it sucking in air... that's your problem...or your catalytic converter is clogging up...check the sensors on the pipes..If there bad it tells your car it needs more gas when it really don't...you will smell gas
11/10/2017 4:19:58 PM •
1998 Pontiac...
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Answered
on Nov 10, 2017
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185 views
I drive a 2004 Pontiac
Most likely one of the blend door motors or wiring/ connectors. Check the plugs first. You will most likely need to remove the floor duct work to get to them.
8/19/2017 2:23:18 PM •
1998 Pontiac...
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Answered
on Aug 19, 2017
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131 views
1998 Pontiac Grand Prix GT
Your ignition switch is bogus. High speed runs directly off the speed control but the lower speeds go thru the ignition switch. Do not know why but that is the way it is!!!!!!!!
Replace the ignition switch and you will be back in business.
6/20/2017 9:39:22 PM •
1998 Pontiac...
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Answered
on Jun 20, 2017
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267 views
Ignition Key Lock solenoid not working
The closed park position switch within the automatic transaxle supplies voltage to the steering electric park lock. The energized electric park lock pulls the mechanical lock in the ignition key cylinder away from the cylinder. The ignition key can then be turned to the LOCK position. The key can then be taken out of the cylinder.
I have 11.53v on the power side and ground side to battery has 11 ohms ? do a voltage drop test on the ground side not ohms . Do you know what voltage drop is ? Learn the right testing procedure , you could have broken wire strands inside the insulation , apply current an the circuit won't work correctly , but would show ok with ohm test's .
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia
Electric Testing Techniques You Need to Know
6/16/2017 6:14:13 PM •
1998 Pontiac...
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Answered
on Jun 16, 2017
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877 views
Low oil pressure light on at idle
first check the wire going to the sensor, give it a good clean on the conditions. if this does not sort the problem it could be because of the oil change, muck in the oil could of gotten into the sensor, you maybe able to clean it out but you may need to replace it. when an oil change is done they would put a cleaning agent in with the oil, this loosens any burnt oil off the engine, this burnt parts can stay in the engine and float around and even block the pressure sensor.
5/30/2017 8:55:13 AM •
1998 Pontiac...
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Answered
on May 30, 2017
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875 views
Multifunction Switch Short in Pontiac Grand Prix
Do you know how to do automotive electrical testing , checking B+ power and ground circuits , using voltage drop ? Do you know how to read a wiring diagram ?
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia
Electric Testing Techniques You Need to Know
How to read an electrical diagram Lesson 1
http://www.bbbind.com/free_tsb.html find wiring diagrams here !
The day time running lights module , ambient light sensor , would be a good guess but that's all it would be .Do you know what these are ? Really don't think there is a short in the multifunction switch . Maybe it's time to take to a qualified repair shop , dealer ! Cadillac or Buick .
Daytime Running Lamps (DRL)
The Daytime Running Lamps (DRL) control module is designed to automatically operate the exterior lights depending on the outside light conditions.
The DRL control module operates in 2 modes:
• The day mode
In the day mode, the DRL control module turns ON the low beam headlamps at a reduced intensity when the DRL ambient light sensor detects daylight under the following conditions:
- The ignition switch is in the RUN position.
- The headlamps are OFF.
- The park brake is OFF.
• The low light mode
In the low light mode, the DRL ambient light sensor detects darkness, turning ON the low beam headlamps to full intensity through CKT 10.
Additionally, the DRL ambient light sensor turns ON the following lamps through CKT 9:
- The park lamps
- The side marker lamps
- The license lamps
- The tail lamps
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3/25/2017 8:59:47 PM •
1998 Pontiac...
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Answered
on Mar 25, 2017
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520 views
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