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rpmdiag, Tech and Instructor
Category: Saturn
Satisfied Customers: 6715
Experience:  Since 1975
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My 2001 sc1 (bucks and jerks) sometimes stalls at idle. New

Customer Question

My 2001 sc1 (bucks and jerks) sometimes stalls at idle. New egrvalve. What could be the cause
Submitted: 4 months ago.
Category: Saturn
Customer: replied 4 months ago.
Replaced plugs and coil packs
Customer: replied 4 months ago.
Gets worse after engine at operating temp
Expert:  rpmdiag replied 4 months ago.

Hi, I’m Ron and I can help you.
I have been in the auto repair business with my own shops since 1975 and also teach automotive repair. I am confident we can resolve your problem together. Please understand that I don't know your skill level. In most cases when you have a problem with the way the vehicle performs, specialized tooling is required to acquire computer data/information or engine testing results. We didn’t build these complicated vehicles; we just diagnose and fix them. Also understand that I can't see, smell, hear, or touch the vehicle either, so it may take a few replies to get to satisfactory results. I am also going to direct you with the fastest, easiest and most common things to check first. Please be patient and permit me to do what I do best.
I also try to give all of the information you may need, expecting a “positive rating” in return. I will also continue assisting you after you have rated me, if necessary. If there is any reason I cannot get a positive rating, please let me know why “in advance”, so I can go another direction for you. I am sorry you’re having this problem; I’ll help you through it.

It's also possible that the injectors are failing. You need to test them with an injector power and flow tester. You also may want to try having them professionally cleaned with a machine too.

Thanks, Ron

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