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- Path: sparky!uunet!stanford.edu!ames!sun-barr!cs.utexas.edu!gateway
- From: Michel_Denber.WBST147@xerox.com
- Newsgroups: rec.autos.tech
- Subject: Re: Citation trouble
- Date: 17 Nov 1992 10:09:42 -0600
- Organization: UTexas Mail-to-News Gateway
- Lines: 19
- Sender: daemon@cs.utexas.edu
- Message-ID: <92Nov17.080925pst.12121@alpha.xerox.com>
- NNTP-Posting-Host: cs.utexas.edu
-
- "The code coming back from the ECM is 34, which according to the
- Chilton's manual, means "MAP sensor output low."
-
- any ideas?"
-
- Well now this is just a wild guess, but it *might* mean there's something wrong
- with your MAP sensor. Fortunately, these buggers are real easy to reach and to
- check. It's probably either clipped to the air cleaner housing, or against the
- firewall. To test it, remove the connector, apply 5 v. across the power leads
- (I *think* they're A and C, but my book is home - you should get the factory
- book anyway). Apply 8" or so of vacuum to the vacuum port with your
- handy-dandy Mity-Vac vacuum pump (see? I *said* they came in handy) and measure
- the voltage at the remaining pin. The output should change with vacuum and the
- sensor should hold vacuum. There's a whole flowchart for this in the Helms
- manual.
-
- - Michel
-
- denber.wbst147@xerox.com
-