Stumble on accel, rough idle, sometimes - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Stumble on accel, rough idle, sometimes
Posted by markco63 (more from markco63) on Thu, 31 Jan 2008 13:29:08
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Help. My problem came back. Cleaning IAC wasn't the fix afterall. Thought moisture but today cold and dry and it is still there - intermittently.
Problem is very bad idle sometimes, other time just a bit rough.
Stumble on accel - no power. Wait a few minutes while reving engine and then I can drive while I notice a very slight stumble in mid range power. Like ignition problem. No engine light.
Here is what I've done:
-gapped plugs (distrib was replace 30k miles ago)
-Cleaned IAC valve. Was sticky.
-Cleaned TB and MAF - they were fine but did it anyway.
-Check for Vac leaks - none.
-Spark seems good - pulled plugs wires one at a time once while I had the problem and no change - problem cleared too quickly to try other stuff.
-Techron concentrate - didn't help
Thinking Ox sensor intermittent issue???
May just do plugs and wires - hate to spend $ if don't need it.
Any ideas?
posted by 192.88.21...
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