94 Sunbird keeps stalling

Tiny
TOYSRUSKID
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  • 1994 ALL OTHER MAKES ALL OTHER MODELS
I just bought a 94 pontiac sunbrd 3.1 6cyl automatic at around 104,000 miles. When I took it for a test drive it ran perfect, as when I drove it home. I've been driving it regularly for about 2 days now, and whenever the engine drops below 1,500-2,000 rpm it stalls. I've changed the oil and spark plugs, and the air filter looks fine. The guy I bought it from sat for a few months with an almost full gas tank. I asked the guy at the auto parts store and he said either the gas in the tank is bad, or I need to replace the throttle position sensor thing. So I bought the sensor figuring if I run through the gas and it still stalls, I'll switch out the sensor. But if it turns out it's the gas, I'll just return the throttle sensor.

I should also add that, before it stalls, the idle speed will shoot up, then drop back down to the point of stalling. Then when I turn it back on, I have to give it a good amount of gas to keep it from stalling again. I'm really getting sick of having to put it in nuetral and keep the engine going everytime I stop.

Tomorrow I plan on replacing the spark plug wires, maybe the O2 sensor, putting on that fuel filter, and maybe a fuel injector.

Basically, I was wondering if you guys had any thoughts.
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Tuesday, May 29th, 2007 AT 9:58 PM

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Tiny
TOYSRUSKID
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So I changed the tps, cleaned out the throttle bore, changed the air filter, spark plug wires, and fuel filter. I've also emptied the gas and filled it with premium. Tomorrow I'm gonna replaced the pcv valve and some sensor in the air filter casing. At this point, the only other two things that I know of that could be the problem are the tcc solenoid or a vacuum leak. I could still use suggestions.
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Tuesday, June 5th, 2007 AT 11:56 AM

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