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Showing results for tags 'idles low'.
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Hello all, apologies if I have not found posts that already answered this but didn’t find exact answers! We have a 1991 1.3 M2F digi in the family that has developed some issues. It seems to be running rich (plugs black and sooty), and doesn’t respond very well to full throttle when cruising or under load, hesitates then gets jerky on light throttle. Also when it’s warm, the idle will be ok initially then start the drop until almost stalls, then self corrects, then drops again after 30 secs or so and this cycle continues. So far I have checked for vacuum leaks everywhere, re sealed the inlet elbow to throttle body and the air inlet temp sensor just in case, checked all connectors, and just replaced the blue temp sender. It has also had new air filter and dizzy cap/rotor. Problems seems to remain. I just read on another post that maybe I should reset the ecu after replacing the blue temp sensor by unplugging while running? Do I need to do this to get the ecu to acknowledge the new sensor? Any other ideas I should try? Lamda sensor perhaps? Runs fine when cold and starts on the button so ruled out HT Leads for example. hope you guys can help!