94 SC2 Hard to start sometimes

I used to have a '96 Buick Roadmaster that exhibited exactly the same symptoms, beginning at close to the same mileage. Problem turned out to be the fuel pump (pumping pressure was about 1/3 of spec).

Had you noticed that the problem is worse if you're parked on a slight uphill slope?

Doug... And what do you know. I do park it on a slight uphill slope! I'll have to check out that fuel pump next! Fred

Another possibility might be one or more fuel injectors leaking. (For a short time after the engine is shut off not enough fuel leaks in to be a problem but a little longer and there is enough ["flooded"]and longer still the fuel pressure has bled off and no more gas leaks in and what did evaporates and it will start OK.) That's my theory -- don't know if that's it or not. I had a '93 Nissan pickup that had a similar problem though it would always start -- eventually. But I sold it (let the buyer know) before I ever confirmed it.

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I had on my 93 sl2 two of the injectors would stick! and not opperate , the thing is they go bad gradually ,the best thing to do would be take them somewhere to get cleaned and checked, mine did not leak, they can be cleaned on the car but that wont help one that is sticking and injector cleaner will not help an injector that is going bad !!! they should be replaced as a set.

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After re-reading and thinking about the other problems a bit more I'm thinking you may have a faulty sensor that is giving the computer incorrect informtion. But I would think your check engine light should be on ( are you sure the lamp is OK -- does the check engine briefly light when you turn the key and start? ). Hopefully a Saturn expert will comment.

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Imagine that. :-)

Check the fuel pump pressure, compare it to spec, and let us know what you find.

The check engine light comes on fine when you turn the key to the run position. Just not on when running! I will check if there are any stored codes.

I will have to probably start with getting a fuel pressure tester. Maybe at Autozone this weekend!

The injector malfunction posibility looks like a likely place to investigate if the fuel pressure looks ok.

Fred

Hi Saturn fans.

On a hunch I replaced the Coolant temperature sensor that goes to the PCM. Fan coming on cold was one of the anomolies. Old one measured 21K Ohm cold. New one measured

6K Ohm cold. Book said about 5.6K cold so old one way off. All problems gone! A miracle fix at $10.00 from Autozone. To all a Merry Cristmas and a Happy new year!

Fred

I would try an ECT - (engine coolant temp sensor). They are notorious for going bad.

That's what it was! Fred

Fred,

I am happy to hear your problem is solved.