Computer in 1990 Eclipse

Guv Bob

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Nov 16, 2011, 10:21:40 PM11/16/11

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The car has been sitting for a month and the battery died. Recharged and battery checks out fine. Before sitting ran good and in good tune. Now hard to start. Let it warm up to full temp in the driveway and then took on the road. Sputters but runs OK until over 35. Then bucks like a mule. Acts like trans is slipping, but I doubt that's it. All fluids OK.

Mechanic says if the battery goes dead on this one, the car has to be driven for some time over 35mph for it to detect and reset settings. I was going to do this but it was riding so rough I took it back to the driveway.

I plan to tow it to the dealer soon to check. Anyone have this happen before?

Thanks!!

Bob

Guv Bob

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Nov 18, 2011, 1:36:42 PM11/18/11

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Pls reply to alt.autos.mitsubishi or alt.autos on Usenet, or send email to me.

Guv Bob

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Nov 18, 2011, 6:04:58 PM11/18/11

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"Guv Bob" <guvbo...@yahooooooooooooooo.com> wrote in message news:N-qdnYy6r-tROFvT...@earthlink.com...

====

Stopped by the Mitsubishi dealer and the service manager was not much help: "Bring it in...." Feller at the auto parts store said the way to reset most computer is to disconnect for "exactly 8 minutes" then reconnect. Will give this a try - can't hurt anything.

I'm wondering if anyone reads these newsgroups any more?

Terminal Crazy

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Nov 19, 2011, 3:56:12 AM11/19/11

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In article <Br2dnbkJwfc0eVvT...@earthlink.com>,

Guv Bob <guvbo...@yahooooooooooooooo.com> wrote:

> Stopped by the Mitsubishi dealer and the service manager was not much
> help: "Bring it in...." Feller at the auto parts store said the way to
> reset most computer is to disconnect for "exactly 8 minutes" then
> reconnect. Will give this a try - can't hurt anything.

> I'm wondering if anyone reads these newsgroups any more?

I think most are awed bythe graphical forums these days. (or just don't
know about newsgroups).

Disclaimer: i know next to nothing about Mitsubishi cars...

If you disconnect the computer for a short while. (It shouldn't be
'exactly' 8 minutes, just enough for it to discharge any residual power in
it) it should default to its stock setting which should run the car ok. I'd
give it 10 mins.

I assume most computers are similar to my '95 Z28 in that they run open
loop until several minutes and the cats are warm etc then they go closed
loop and start learning the cars current state and driving habits.

Does the engine warning light come on?. Can you get any MALF 'engine
malfunction codes' through it ?That might indicate where the fault is.

I had my Ignition Module die and the car wouldn't rev over about 3500rpm it
just ran like a bag of nails above that :-)

HTH

--
Terminal_Crazy

Mitch - 1995 Z28 LT1 M6 termina...@sand-hill.freeserve.co.uk
Lancashire England http://www.sand-hill.freeserve.co.uk/terminal_crazy/

Guv Bob

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Nov 19, 2011, 2:25:13 PM11/19/11

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"Terminal Crazy" <Termina...@sand-hill.freeserve.co.uk> wrote in message news:523480d55bTe...@sand-hill.freeserve.co.uk...

Thanks, TC.

I found this online, probably helpful to someone in the know. Seems to be missing the more basic info.
http://www.evoscan.com/technical-vehicle-manuals/12-mitsubishi-diagnostics

Found trouble code reading info here
http://free-mitsubishi-manuals.blogspot.com/2011/04/mitsubishi-diagnostic-trouble-code.html

Guv Bob

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Nov 19, 2011, 6:36:07 PM11/19/11

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"Guv Bob" <guvbo...@yahooooooooooooooo.com> wrote in message news:EK6dnabC5O6rnlXT...@earthlink.com...

=====

Reset computer and got no errors at the diagnostic connector. Will keep digging.

Terminal Crazy

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Nov 19, 2011, 7:30:55 PM11/19/11

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In article <5MedndunNPvkoFXT...@earthlink.com>, Guv Bob

<guvbo...@yahooooooooooooooo.com> wrote:

> Reset computer and got no errors at the diagnostic connector. Will keep
> digging.

Good. It's a steep learning curve but isn't very difficult once you're
headed in the right direction.

Something like the Ignition module probably wouldn't show up on the
diagnostics anyway. Are all connections OK like battery & earth leads?

Guv Bob

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Nov 19, 2011, 9:40:05 PM11/19/11

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"Terminal Crazy" <Termina...@sand-hill.freeserve.co.uk> wrote in message news:5234d66791Te...@sand-hill.freeserve.co.uk...

Yes, I'm good at digging... LOL!! Checked all the connections first thing. Last thing today was to hit more 'easy' things. I pulled out the air intake hose and checked the air filter assy which was fine. Throttle was moving freely.

Something I missed before was a high pitched chattering near the throttle when turning the key to "on" (not cranking). I could only pin point the noise to near the throttle. Had to stop before I could find an assembly drawing. My uneducated guess is there may be a solenoid-controlled valve in that area. Cold idle is way too low -- may be fuel or air related. It's not the starter solenoid.

Something to look forward to for tomorrow.

Terminal Crazy

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Nov 20, 2011, 4:08:33 AM11/20/11

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In article <NeSdncPT-vcI9VXT...@earthlink.com>, Guv Bob

<guvbo...@yahooooooooooooooo.com> wrote:
> My uneducated guess is there may be a solenoid-controlled valve in
> that area

On the Camaro there is a motor driven valve to adjust idle speed (Idle air
bypass) and hold it steady. That would only affect idle condition though
not higher ranges.

Guv Bob

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Nov 20, 2011, 11:47:26 AM11/20/11

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"Terminal Crazy" <Termina...@sand-hill.freeserve.co.uk> wrote in message news:523505ce03Te...@sand-hill.freeserve.co.uk...

Raining today. Thanks for all your help Mitch. Will officially give up and take to mechanic tomorrow.

Terminal Crazy

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Nov 20, 2011, 3:03:21 PM11/20/11

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In article <E96dnd6LTYqzslTT...@earthlink.com>, Guv Bob

<guvbo...@yahooooooooooooooo.com> wrote:
> Raining today. Thanks for all your help Mitch. Will officially give up
> and take to mechanic tomorrow.

No probs. Let us know how you get on.