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My 98 pontiac firebird wont start or no sound on switch

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Does the battery have power?
Try starting on neutral or thru shifter range.
Do head lamps and horn work, simultaneous? for power test.

Posted on Aug 14, 2019

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6ya6ya
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Posted on Jan 02, 2017

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  • 58 Answers

SOURCE: my car wont start

0900c1528008e3eb.jpg hope this helps

Posted on Jun 20, 2009

Molson02536
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SOURCE: 1989 pontiac firebird 305 v8 starts and idles

Your idle air control valve may be dirty or the wire harness may be damaged. First try cleaning the throttle body with throttle body cleaner and make sure you use all the can up and try to get the idle air control valve cleaned. A faulty or dirty idle air control valve will cause engine to stall when put in to gear from idle. Good luck and hope this helps. Keep me posted, be glad to help you get your car running 100% soon.

Posted on Aug 08, 2009

ourhowse
  • 2007 Answers

SOURCE: Change ingnition switch on 1978 pontiac firebird trans am

Use a steering wheel puller to remove the snap ring that holds the big spring. Remove the screws that hold the signal light mechanism, and the signal light handle has to be removed. Lift the signal thing up to expose a "torx" headed screw. Remove that screw and the tumbler should pull out fairly easily. That torx screw should have an unthreaded part at the bottom of it. Make sure that comes with it. Sometimes they break off.

Posted on Sep 23, 2009

  • 56 Answers

SOURCE: 1998 Pontiac transport van wont start:

Well you hit all the major ones, could be crank position sensor, ignition module, a bad coil pack (it should have 3), you need to check that you have spark to each plug while the engine is turning over (!!!be careful as this will hurt if you get shocked!!!), this will rule out coil packs. if you have no spark to any plug your looking at a bad ingnition module (which is what the coil packs bolt to). Hope this gets you on the right track!

Posted on Feb 09, 2010

  • 1509 Answers

SOURCE: 98 pontiac firebird v6 3.8 liter, keeps

When you said you replaced all the cooling system parts, you mean the raditor, the hoses, the water pump,the therostate, the raditor fan and it's relays and sensers. If you've done all of this and you correctly purged all the air out of the system then The engine can be making too much heat another way. The coolant temperture senser can say that the engine is cooler than it really is ( makes a rich mixture, to warm the engine) The therostate may be installed unside down or is open all the time or is missing. ( the therostate needs to make the car get up to 200degrees F or the raditior may not get hot enough to remove enough haet to cool the engine. ( hot is good too hot or too cold is bad). Let's say all the cooling system work is good and you did'nt mix more than one kind of antifrezze ( they jel up and not cool.) The exhaust can be stopped up ( causes low performance too) Take out the oxagen senser and connect a pressure gauge ( leave the snser plugged in and grounded) If the pressure goes any higher than 5 Lbs. reving it or anytime then you looking for a clog. A good system revved up and heald staedy should show a vacume. The timing can be wrong ( low performance too) The timing chain can skip time and the measureed compression will be lower that 150 LBS. With the chain skipped the ingtion timing will be slow and that will cause overheating all by it'self. The engine may need an oil change, Gas in the oil from short trips and running too cold sometime. Overheating will rurine the mototr oil and it being bad will make the engine heat. The engine turning hard ( turning the engine by hand you should feel 3 compression shrocks per turn and it should turn easy except as it pressureizes each cyclinder, ( they should all feel the same) the oil should look clear and black, not brown. If it's some other color, coolant may be getting in the oil, The exhaust should'nt smell sweet ( antifreeze leaking into the combustion ) with the car running and the cooling system full with the cap off it shouldn't bubble or steam come out ( it tells their is a leak in the engine to the coolant and it'll blow bubbles in the coolant and the hot exhaust will heat the coolant more than the raditor will remove. It certainly should'nt bubble at all started cold and full.

Posted on Sep 28, 2010

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I have a 98 firebird and i'm getting a misfire #4 anda lot of exhaust when i start the car. this started after i changed the fuel pressure regulator.


did you go back stock regulator? the misfire, need to pull plug and check, more and likely it is a bad coil.

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