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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!psinntp!isc-newsserver!ritvax.isc.rit.edu!AJB8886
- From: ajb8886@ritvax.isc.rit.edu
- Subject: Re: Ford Tempo Hesitates/Stalls
- Message-ID: <1993Jan23.163922.2794@ultb.isc.rit.edu>
- Sender: news@ultb.isc.rit.edu (USENET News System)
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- Organization: Rochester Institute of Technology
- References: <2024@heurikon.heurikon.com> <1993Jan22.030956.22874@tandem.com>,<1jpf8hINNmqe@early-bird.think.com>
- Distribution: usa
- Date: Sat, 23 Jan 1993 16:39:22 GMT
- Lines: 57
-
- In article <1jpf8hINNmqe@early-bird.think.com>, shaig@Think.COM (Shai Guday) writes:
- >In article <1993Jan22.030956.22874@tandem.com>, norcott_bill@tandem.com (Bill Norcott) writes:
- >|>
- >|> You should not have to recreate it for them, if it happened recently
- >|> the trouble code for the problem is stored in the cars computer.
- >|> Ask them to run the engine diagnostic and tell you what codes the
- >|> computer spit out. I am surprised they did not do this immediately.
- >|> It could well be that the idle speed control system is screwing up,
- >|> this happened on my '87 before. Make sure they take a specific action
- >|> and record the results, such as "Engine computer diagnostic run,
- >|> revealed codes: XXX". Don't let them refuse to take the car into the
- >|> shop and run the diagnostics. Also, don't let them get by with just
- >|> adjusting crap, tell them to start swapping out components until they
- >|> find the problem if that's what it takes them.
- >
- >While I agree with what you suggested, I have learned from my own
- >experience that their diagnostics leave something to be desired.
- >My car was fluctuating in RPMs from ~600 to ~1500 and occasionally
- >stalling. They ran diags on it twice and no codes came up even though
- >the needle was fluctuating in a smaller range (range decreased when it
- >sat in idle for a while). Even though the chief mechanic took a road test
- >with me and saw it flux, he couldn't tell me what was wrong.
- >They cleaned the sensor off-carb, and it helped but did not go away.
- >I finally took apart the thorttle body, cleaned it thoroughly,
- >tightened all the air hose fittings, and reset my computer.
- >It is now down to a reasonable flux of ~250 RPM at idle.
-
- I had the same problem with my '89 Escort GT. Cleaning the throttle body
- helped a bit, but replacing the O2 sensor ($40) solved my problem for good.
- It's interesting to note I had a >SEVERE< hesitation problem previously too,
- that's been gone ever since (I did this about 5 months ago).
-
- The engine now idles perfectly flat instead of oscillating between 800 and
- 1500. People have even asked me if I had a six, the engine has been idling
- THAT smoothly.
-
- It's been running really well ever since.
-
- Alex
-
-
-
-
-
- >
- >Moral of the story: don't depend on the diags, as the FORD mechs
- >seem to come back with a standard reply: no codes = no problem.
- >
-
- No argument :)
-
- >
- >--
- >Shai Guday | Stealth bombers,
- >OS Software Engineer |
- >Thinking Machines Corp. | the winged ninjas of the skies.
- >Cambridge, MA |
-