At 11:58 AM -0800 2/17/00, Clayton wrote:
I am having hesitation or missing problems right now and ideas?
1. The car is a CIS-E 16v engine
2. It started bogging after the engine was warmed up.
3. When it starts getting warm, the bogging gets worse.
4. First, it's at the 6000-6500 range, then expands to cover the
entire rev range.
5. Very small amounts of throttle do not affect it (no bogging)
6. At times, the bogging will go away and the engine will operate
normally... this is not very often and does not last long.
7. I opened up the distributor cap and the connections were all
carboned up. I cleaned them but it did not help.
8. I put a new fuel filter in and it did not help. This helped
last summer when I was having a hesitation problem.
I will dive further into this but I thought that someone might want
to give me some helpful advice.
Thanks,
Clayton
This sounds very similar to my drivability problems. A while
ago the symptoms weren't as bad, and when I tried to set the mixture,
the DPR current was pegged at 20mA and not fluctuating, all signs
pointed to a bad O2 sensor, so I changed it, but that wasn't it the
problem. Before changing the O2 sensor, I checked the knock sensor
control unit, and there were no fault codes. Now that the problems
have worsened, I'm suspecting the knock sensor control unit itself.
Since restarting the car makes it drive better for a short while, I'm
pretty sure that's the culprit, which sucks, since I hear it isn't
cheap. When I have the time in the near future I plan on going
through the full knock sensor trouble shooting proceedure starting on
page 8-24 of the Bentley, and that's my best recommendation for you.
Let me know the results.
HTH,
Lee
W. Lee Hendrick
[email protected]
http://soliton.ucsd.edu/~hendrick/
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