Electrical overheating??

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dlockett99

NAXJA Forum User

Location

Atlanta

• Jun 14, 2009

• #1

My 92 xj keeps dying on me. I let it sit for 30 min and it starts back up. Its like something electrical is getting hot and then cooling down telling it to fire and send fuel. changed the crank sensor. the fuel pump doesnt always kick on when I turn the key on, is it supposed to. also pulled the fuel line and there seemed to be air in the line. I am stumped!!

 

hanaxj87

NAXJA Forum User

Location

Cincinnati,Ohio

• Jun 15, 2009

• #2

Sounds like a fuel pump.

Good luck

Nick

 

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dlockett99

NAXJA Forum User

Location

Atlanta

• Jun 16, 2009

• #3

Dug into it a little more today. Fuel pump is good. I lose spark and fuel pump is intermittent when it heats up. Cleaned ECM points. Since I already replaced the CKP should I jump right to another ECM??

I let everything cool down she cranks right up??????? ECM????

 

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dlockett99

NAXJA Forum User

Location

Atlanta

• Jun 18, 2009

• #4

FYI- It turned out it was the ECM. So if you have problems that occur after the truck warms up it could be your ECM. Picked one up for $15 at pull apart. From what I have read it is ussually your CKP, but in this case ECM.

All running well now.

 

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winterbeater

NAXJA Forum User

Location

Royal Oak, Michigan

• Jun 18, 2009

• #5

Thanks for the update. I think ECM problems are kind of rare. Just to verify (cause you got it so cheap too), the ECM is the engine computer box, correct?

 

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wim hoppenbrouwers

NAXJA Forum User

Location

Netherlands europe

• Jun 18, 2009

• #6

Yes thanks dlockett99. I do have also a '92.
Maybe the computer was damaged by the heat under the hood.
So hoodvents will prevent that. :dunce: