topless94style Posted September 10, 2004 Report Posted September 10, 2004 I have been getting a SES light all summer, but its more frequent now. It used to only come on for a few seconds on the freeway, but now it comes on every time i drive the car. After driving for a little while, sitting at a light, the idle is poor, moves between 400-700rpms. Went to auto zone, got the code, dont remember the number, but it was a lean condition on a bank of cylinders. Since then, i have noticed my mpg drop 2-3mpg. O2 sensor? I put in a new O2 sensor last fall when this same sort of thing happened, only last fall it was a bad intake manifold gasket; which i replaced and it fixed all my problems. Havent found a vac leak, dont think its the O2, and im hoping its not another gasket leak. Any ideas as to what this could be? Quote
topless94style Posted September 11, 2004 Author Report Posted September 11, 2004 20 views and nothing? Quote
PeNZ Posted September 11, 2004 Report Posted September 11, 2004 I dont think an o2 sensor would only cause one bank to lean out, since its outputs goto both banks. Quote
topless94style Posted September 11, 2004 Author Report Posted September 11, 2004 I dont think an o2 sensor would only cause one bank to lean out, since its outputs goto both banks. Thats why i dont think its the O2, plus id be pissed if it failed in under a year anyway. I saving up right now for a new head gasket set, so i can put on my new heads, and fix that bastard oil leak. Hopefully this will also fix whatever is causing this problem. Quote
PeNZ Posted September 11, 2004 Report Posted September 11, 2004 It might be some sticking fuel injectors, on the back side. Quote
midnight rider Posted September 11, 2004 Report Posted September 11, 2004 I was going to say the same thing, she sounds like the injectors are sticking... Quote
hosser Posted September 12, 2004 Report Posted September 12, 2004 have you ran some seafoam / fuel injector cleaners through it? Quote
topless94style Posted September 19, 2004 Author Report Posted September 19, 2004 have you ran some seafoam / fuel injector cleaners through it? I ran seafoam at the beginning of the summer. I went to the track on friday, and i THINK this problem is causing my car to be....well....horribly slow. Atleast i hope so, and my car really isnt this slow 10.62@68mph in the 1/8. Quote
dkorinko Posted September 20, 2004 Report Posted September 20, 2004 whenever my car would start to run a little lean, I would run some 103 through it, seemed to always get things cleaned up and working back to normal. Quote
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