1992 Mitsubishi Diamante fuel pump

RICK131

MEMBER
1992 MITSUBISHI DIAMANTE
3.0L
2WD
AUTOMATIC
130 MILES

I'm having problems with 1992 Mitsubishi Diamante
car just cranks but won't turn over replaced fuel pump & fuel filter still nothing is there a fuel cut off switch that might need resetting

Saturday, June 27th, 2015 AT 6:47 PM

5 Replies

CARADIODOC

MECHANIC
33,737 POSTS

What tests led you to the fuel pump? If you just made a guess, that should be the last thing on the list.

Have you checked for spark, and have you had the diagnostic fault codes read and recorded?

So we're clear, "cranking" and "turning over" are the same thing. Does it or doesn't it?

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Saturday, June 27th, 2015 AT 7:56 PM

RICK131

MEMBER
7 POSTS

No it does not start.I was driving the car but I drive my work truck dering the work week & then on the weekend I drive the car and went out to start it and nothing it would not start. Yes I had it diagnostic check and they came up with fuel pump

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Saturday, June 27th, 2015 AT 11:33 PM

CARADIODOC

MECHANIC
33,737 POSTS

I'm going to assume the engine cranks but won't run. There is a relay that turns on the fuel pump, but it also turns on the ignition system. Do you have spark?

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Sunday, June 28th, 2015 AT 12:26 AM

RICK131

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7 POSTS

How exactly do you check for spark

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Sunday, June 28th, 2015 AT 1:09 PM

CARADIODOC

MECHANIC
33,737 POSTS

Remove a spark plug wire from one spark plug, insert a screwdriver blade into the end of the wire, hold the blade close to a metal part on the engine, with a gap of about 1/4". Have a helper crank the engine and watch if multiple sparks jump from the screwdriver to the engine. If there is no spark, you don't have a fuel pump problem.