The engine is a '93 350 TBI, complete with its 700R4 from a Buick Roadmaster, now in my '57 Chevy Suburban. The truck has just spent the (rainy) winter parked outside, and I have only driven it about 100 miles this spring so far. This engine has been in my truck for about 8000 miles, so I know the set-up can work very well!
A few days ago, the engine started running not quite as smooth as it always had, for a couple of days. Then it developped an over-rich situation, I could not drive it, had to floor the throttle to start it, big black smoke, but no check-engine-light... After doing a search here (once again, thank you, Hot Rodders.com!), I unplugged the coolant temp sensor, and the over-rich situation was solved; I will have to buy a new sensor, easy.
Problem is that the engine went back to running not quite as smooth as it should, it even sometimes dies in gear with the A/C on.
The check-engine-light is now on (normal, because I had unplugged the temp sensor) but not always! I tried to see if there are any codes with a paper clip, but I may have an issue with my ALDL connector, I do not even get the 12 code I should get.
Any suggestions to make my engine run smooth again?
A few days ago, the engine started running not quite as smooth as it always had, for a couple of days. Then it developped an over-rich situation, I could not drive it, had to floor the throttle to start it, big black smoke, but no check-engine-light... After doing a search here (once again, thank you, Hot Rodders.com!), I unplugged the coolant temp sensor, and the over-rich situation was solved; I will have to buy a new sensor, easy.
Problem is that the engine went back to running not quite as smooth as it should, it even sometimes dies in gear with the A/C on.
The check-engine-light is now on (normal, because I had unplugged the temp sensor) but not always! I tried to see if there are any codes with a paper clip, but I may have an issue with my ALDL connector, I do not even get the 12 code I should get.
Any suggestions to make my engine run smooth again?