92mits 3000 running on 4cyl.

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92mits 3000 running on 4cyl.

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Mitsubishi >> Mitsubishi Models >> Mitsubishi 3000GT >> 92mits 3000 running on 4cyl.

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92mits 3000 running on 4cyl. - 7/1/2006 5:51:41 AM

bigdog

Posts: 2
Joined: 7/1/2006
Status: offline

I have a 92mits 3000 with a 1993 or 1994 engine. It is not firing on #3 & #6 cyl. Replaced plugs, wires, coil paks. Does anyone know if the firing comes straight from the computer or does it come from somewhere else. I took it to a garage and it stumped them!?

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RE: 92mits 3000 running on 4cyl. - 7/1/2006 10:18:55 AM

thestealth

Posts: 1202
Joined: 5/27/2004
Status: offline

It could be the PTU, the unit right under your coil pack, or the ECU could be failing. I had the same cylinders not firing on my TT, after a week of tracing wires, checking parts, it ended up being the ECU.
Basically, the order of events go something like this: Sensors>ECU>PTU>Coilpacks>Plugwires>plugs.
I would bet that it is the ECU.

Check the PTU first though...How to check PTU, courtesy of Stealth316

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