I have a 91' 351 e4od. It was running great. I walked out started motor. Check engine light came on. Motor idled up high and rough. Pouring black smoke, running very rich. Tried to check codes. but the light never blinked. I attempted to drive to shop to have codes checked. Thats when I discovered that I was stuck in overdrive. I can manually put in 2nd gear but not 1st gear. Can not turn off overdrive. Since both these problems occured at same time. Could it be the eec-iv having a problem?
Thank you for the response. I tried checking codes first by jumping and by using a code reader. It is not going into selftest mode and not putting out signals for codes. I think maybe the transmission control may have shorted the computer. Like you said it might be in some kind of default mode. Still can't figure why I can not manually put it in 1st to take off.
Well, installed re-manufactured computer. Everything is back to normal. Thx anyway.
Thank you for the response. I tried checking codes first by jumping and by using a code reader. It is not going into selftest mode and not putting out signals for codes. I think maybe the transmission control may have shorted the computer. Like you said it might be in some kind of default mode. Still can't figure why I can not manually put it in 1st to take off.
Well, installed re-manufactured computer. Everything is back to normal. Thx anyway.
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