I've been registered here a while but never post, just troll. Well, I bought my first e30 last tuesday. 86 w/ 220K-ish miles. It's in fabulous shape, I love it.
For 3 days now, the car has been stumbling when I give it throttle as the revs climb. As its warming up, it'll rev great all the way to redline. As the coolant gets warmer though, I lose rev range. It gradually lowers to almost 2500, where it just won't rev any further. Again, it gets worse as the car warms up.
Here's what I have done/tried:
*checked all coolant sensor connections. There were a couple that were loose and one was detached altogether. I cleaned the contacts and attached everything, no change. One set of sensors on the radiator (the lower set on the left side) were both detached, so I just guessed as to which connection went where, but neither combination fixes the problem, so I assume that's ok.
*unplugged AFM when it's running, and it dies almost immediately. So that should be ok right?
*unplugged O2 sensor connection in engine bay and drove it when cold and warm, no change in the symptoms.
*checked every other connection I could find, no luck.
*when I bought the car the coolant was way low (none in the tank really). I know this is b/c of a leaky tank on the right side there's a drain plug or some type of bleed valve at about 2 o'clock as you go around the tank. Could it be air in the system near the coolant temp sensor maybe?
I'm lost here, but not totally without the drive to fix it myself instead of leaving my CC# with a shop. I don't really have access to voltmeters and wouldn't really know what normal ranges are for things like 02 sensors, so try and keep that in mind. Thanks for the help.
For 3 days now, the car has been stumbling when I give it throttle as the revs climb. As its warming up, it'll rev great all the way to redline. As the coolant gets warmer though, I lose rev range. It gradually lowers to almost 2500, where it just won't rev any further. Again, it gets worse as the car warms up.
Here's what I have done/tried:
*checked all coolant sensor connections. There were a couple that were loose and one was detached altogether. I cleaned the contacts and attached everything, no change. One set of sensors on the radiator (the lower set on the left side) were both detached, so I just guessed as to which connection went where, but neither combination fixes the problem, so I assume that's ok.
*unplugged AFM when it's running, and it dies almost immediately. So that should be ok right?
*unplugged O2 sensor connection in engine bay and drove it when cold and warm, no change in the symptoms.
*checked every other connection I could find, no luck.
*when I bought the car the coolant was way low (none in the tank really). I know this is b/c of a leaky tank on the right side there's a drain plug or some type of bleed valve at about 2 o'clock as you go around the tank. Could it be air in the system near the coolant temp sensor maybe?
I'm lost here, but not totally without the drive to fix it myself instead of leaving my CC# with a shop. I don't really have access to voltmeters and wouldn't really know what normal ranges are for things like 02 sensors, so try and keep that in mind. Thanks for the help.
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