home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!think.com!Think.COM!shaig
- From: shaig@Think.COM (Shai Guday)
- Newsgroups: rec.autos.tech
- Subject: Re: Ford Tempo Hesitates/Stalls
- Date: 22 Jan 1993 18:43:29 GMT
- Organization: Thinking Machines Corporation, Cambridge MA, USA
- Lines: 35
- Distribution: usa
- Message-ID: <1jpf8hINNmqe@early-bird.think.com>
- References: <2024@heurikon.heurikon.com> <1993Jan22.030956.22874@tandem.com>
- NNTP-Posting-Host: mickey.think.com
-
- 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.
-
- 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.
-
-
- --
- Shai Guday | Stealth bombers,
- OS Software Engineer |
- Thinking Machines Corp. | the winged ninjas of the skies.
- Cambridge, MA |
-