95 Eclipse GS 2.0L auto no turbo

STEVE R

MEMBER
1995 MITSUBISHI ECLIPSE
4 CYL
FWD
AUTOMATIC
130,000 MILES

95 Eclipse GS auto no turbo. We get no spark, No fuel, no ASD Relay, and no power to the cam sensor or the crank sensor. I put a rebuilt/ preprogrammed computer in it twice to be sure. I can force the fuel pump relay or the asd relay with a wire but it wont work correctly. I noticed the trans computer has a burnt spot in the gel does it send signals over before you get the ASD output? I was thinking maybe neutral safety. But it cranks over.

Friday, December 3rd, 2010 AT 6:35 PM

1 Reply

CARADIODOC

MECHANIC
34,330 POSTS

Forget the computer. They don't cause much trouble. The clue is the missing voltage to the cam and crank sensors. Unplug one of them, cycle the ignition switch off and back on to reset the power supply in the computer, then see if the voltage comes back. When one of those sensors is shorted, it will kill the power supply to them. The computer will shut that supply down to protect itself. Also look for wires that fell onto the hot exhaust, melted, and shorted to ground.

It's the pulses from those sensors that tell the Engine Computer when to turn on the ASD relay.

Caradiodoc

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Friday, December 3rd, 2010 AT 6:53 PM