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- From: riggert@mott.seas.ucla.edu (Eric F. Riggert)
- Newsgroups: rec.autos.tech
- Subject: 89 Sentra CHECK ENGINE light
- Message-ID: <9067@lee.SEAS.UCLA.EDU>
- Date: 12 Jan 93 05:53:03 GMT
- References: <7308@ucsbcsl.ucsb.edu>
- Sender: news@SEAS.UCLA.EDU
- Organization: SEASnet, University of California, Los Angeles
- Lines: 40
-
- Recently, the Check Engine light came on unexpectedly for the
- sixth or so time (always seems to happen in parts of town where
- I REALLY don't want to stop).
-
- The car is a 1989 Nissan Sentra (it has an ECC), 1.6L I4 (12 valve)
- with a manual transmission and about 75000 miles.
-
- The problem is that when the light comes on, I pull over, check
- everything in reason (are the gauges still working - do they say
- there is a problem, is there really oil in the engine still,
- is the filter on tight or did I lose it somewhere, are all the
- vacuum hoses still on right, is the throttle body still spritzing
- gas right, etc., etc. - everything I can think of to check with
- basically no tools). I NEVER find anything obviously wrong.
-
- Here's the weird part - I get in the car and start limping to
- the nearest offramp or whatever, and the light usually goes back
- out! Two things to notice: The engine is running fine the
- WHOLE time, and the light is NOT SUPPOSED TO GO OUT.
-
- I used to just think - "Oh, must of got some bad gas and the
- ECC is upset at the amount of emissions - oh there, the light
- went out, the gunk must have burned up". Then I looked in the
- Nissan Service Manual which basically shows that the computer
- (apparently) doesn't work that way - it is NOT supposed to
- reset until 50 start ups OR the code is cleared by digging the
- ECC out from under the seat and getting the fault code (which
- clears it too).
-
- So what's happening? Beats me. The thing I'm worried about
- is that all this crying wolf is going to cause me to ignore
- that damn light once when I shouldn't.... I just don't TRUST
- it.
-
- If anyone's had something similar happen, please let me know...
-
- Thanks,
- --= Eric =--
-
-
-