1990 gs

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1990 gs

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Mitsubishi Forum >> Mitsubishi Models >> Mitsubishi Eclipse & Eclipse Spyder >> 1st Generation >> 1990 gs

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1990 gs - 11/1/2007 8:16:07 PM

Ep!C

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Hey, I bought a 1990 gs about a month ago with 130000 miles and the engine was rebuild about 30000 miles ago, exept the car was sitting for around two years. The car and everything started fine and ran pretty good when I got it. So i changed the spark plugs, the wires and all the basic mantinece, I also bought a cold air intake for it since the stock one was bad. After I put all the new stuff on i ran it for a while and every time I punched the throttle hard, it sounded like it was bogging down and the RPMs would just stay the same but then it would start to rev up normally. Also I took one of the plugs out and just after running it at idle for 10 minutes, it was already very dark. So I was just wondering what could be causing this, or how I could change the air/fuel mixture so it doesnt run so rich. Any help with this would be appreciated, thanks.

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RE: 1990 gs - 11/2/2007 9:45:35 AM

dsm1990gsx

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Check your coolant temp sensor, if its bad it'll tell the pcm to add more fuel-rich..

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2003 Ford Escape old ladys car
1990 Tsi Awd daily driver
2007 Jeep Wrangler power wheels daughters car...soon to be converted from 12v to 24v

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RE: 1990 gs - 11/2/2007 9:25:42 PM

Ep!C

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If that temp sensor is bad and I replace it would the mixture correct itself on its own or would I still have to change something with it?

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RE: 1990 gs - 11/3/2007 6:31:33 AM

dsm1990gsx

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It should fix itself, I had the same problem, but my issue was on start up and my plugs were blk.

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2003 Ford Escape old ladys car
1990 Tsi Awd daily driver
2007 Jeep Wrangler power wheels daughters car...soon to be converted from 12v to 24v

(in reply to Ep!C)

Post #: 4

RE: 1990 gs - 11/4/2007 2:28:55 PM

Ep!C

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Okay I will try that but where is the coolant temp sensor and where could I buy a new one from?

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RE: 1990 gs - 11/4/2007 2:38:13 PM

nick_200321

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yea, before my car blew up the coolent temp sensor went bad and it did the same thing

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RE: 1990 gs - 11/4/2007 2:39:16 PM

nick_200321

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oh, and it is unter the thermostat where you put the water in the radiator.. and you can buy one from advance auto for like 20-25 bux

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RE: 1990 gs - 11/5/2007 1:21:17 PM

Ep!C

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Ok Ill try that, thank you

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RE: 1990 gs - 11/5/2007 1:23:52 PM

Sebba

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From: San Antonio, TX
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Reset the ECU. Remove the negative battery terminal for about 20 seconds, put the key in the ignition to drain any excess power and then reconnect it.

Also, what kind if spark plugs did you put in? Are they gapped correctly?

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