20 Most Recent 1989 Pontiac Sunbird - Page 4 Questions & Answers

The first things I need to know are which engine do you have, and what have you actually tested so far ?If it has no power or ground pulse to the injectors and no spark, the problem would be something that controls both such as a crank or cam sensor. Or a relay. Or the ignition module. And so on.

yes 1 for turn signals and 1 for hazard lights (4way)

Do you have any electric inside the car at all? If no electric at all its most likely a fusible link the goes to fuse box if you have electric inside car just no power to starting circuit check starter or wires(fusible links)forming off starter

If you here a clicking noise it may be locked up but if you here nothing you can take it off and go by most auto parts store and they can test it for you it may be going bad or has gone bad.

General Motors J body cars had a lot of problems with this. Replace the spring kits in the rear brakes and the problem should go away.

You did not say model or year etc, but if its an older rear wheel drive, look all the way at back of the trans by the pointy end, near where the drive shaft come out. It will have a vacuum tube attached.

Sounds like the transmission converter lock up at slow speeds during some driving conditions.
A new PROM package has been released which raises the TCC lockup speed to the following: 1989-1991 sunbird with 2.0L

I'm pretty sure that one uses the lower intake as the fuel rail. If that's the case than there is no schrader valve. You'll need to test for fuel pressure at the fuel filter by removing one of the lines from the filter and using adapters install a test hose inline and then attach your pressure gauge to that.

If the fuel pressure regulator attaches to the drivers side of the lower intake than you have this setup. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

You realy need to remove the tank to do this .However i know some people who cut a hole in the flood over the fuel tank and did it that way although i don;t recamaned it because you will likely have other issues holes in the top of the tank or problems with fuel lines being rusted and ruptureing when disturbed there are a lot of rust problems with chevy fuel tanks and systems

Hi,
Take the heater hoses off the heater core at the firewall and join them together with a barbed fitting and a couple of hose clamps. That will do it...Mike

2 other candidates are throttle position sensor or a vacuum leak.

If you have an automatic tensioner, hydraulic tensioner, or even a manual tensioner for your timing belt, it is probably faulty. I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Yes! You need to replace ignition , sounds like gear teeth got stripped .