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Starts hard, runs rough, ECS lite on, runs great
Posted 01 January 2008 - 02:39 PM
So this has got me a bit confused. First start of the day is really tough. Changed to manual choke, which helped at first. But now it is taking longer and longer to start when cold. Once started, it runs a bit rough, as if it is missing. Then when it warms up a bit AND ECS light comes on, it runs smooth. No missing, decent power, ( for a subie engine)
Plugs new, Wires, new exhaust from Cat back. (Problem was happening even before new exhaust.
This just seems backwards to me. I'd have thought that it would run worse when ECS light came on.
Any ideas? Hope the New Year is good to y'all. Thanks
Posted 01 January 2008 - 02:53 PM
Posted 01 January 2008 - 03:01 PM
unplug the computer and drive it
So are you saying computer may be bad? I have another one.
Posted 01 January 2008 - 03:02 PM
unplug and drive
see how it does
Posted 01 January 2008 - 10:53 PM
Posted 02 January 2008 - 07:35 PM
I agree that you are probably looking at a temp sensor. They are around $35 to $50 depending on where you get one.
Check the codes first to determine the exact problem.
Posted 06 January 2008 - 12:19 PM
Posted 06 January 2008 - 05:12 PM
Sounds like a temp sensor. The computer is for the feed-back carb. Fix the problem. Check the codes for other issues as well.
Yep, the same thing happened with my '83. Turned out to be the "coolant temperature sensor", which is not to be confused with the sensor that's plugged into the radiator. Can't remember where it's located on the engine (it was probably 150,000 miles ago), but IIRC it was an easy fix.
I concur with Ken.
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