1995 Dodge Intrepid no power to fuel pump

SHROOM93

MEMBER
1995 DODGE INTREPID
6 CYL
FWD
AUTOMATIC
200,000 MILES

Hi, the car has a 3.5L engine in it. I have no power to the fuel pump and the relay isnt working, ive swapped relays with others with same numbers and nothing. The relay isnt "cicking". Before I checked all this, I changed the fuel pump. Then I realized that the old pump wasnt bad, I tried it manualy and it works. What could be the problem? Any ideas?

4 Replies

ZACKMAN

MECHANIC
4,202 POSTS

Check the ASD relay in the power distribution center and fuse F18 10A in the junction box.

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Tuesday, December 16th, 2008 AT 7:11 PM

SHROOM93

MEMBER
2 POSTS

Ive checked all fuses, none are blown, also, no check engine light on. I found a new symptom yesterday, it isnt firing either, I checked the 4 pin connecter goingto the coill and im not even getting power to the coil with the ignition switch turned to the on position. Ive also changed the crankshaft position sensor yesterday and still nothing. But now im getting power to the fuel pump, and the new fuel pump is good, ipulled it back out and checked it manually. The fuel pump relay is working now, but im still not getting fuel or spark. This is strange. Any ideas what it might be based on those problems I described? Anyone have a wiring diagram for this car they can post please?

Edit. Ill check the ASD relay today also I heard their may be an inline fuse from the ASD relay to the computer. Ill check that as well and get back to you if this doesnt work. One more thing, im gonna unplug the 60pin connector going to the PCM and clean it to see if its corroded or anything.
Thanks in advance,
John

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Wednesday, December 17th, 2008 AT 8:20 AM

ZACKMAN

MECHANIC
4,202 POSTS

I am at home right now, so I have no access to the diagram. From what you are telling me, it sounds like the PCM is not sending the signal to your fuel pump and the coil. While you are checking the PCM connection, you may want to check the ground. Bad PCM ground can cause a lot of no start.

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Wednesday, December 17th, 2008 AT 4:58 PM

N8QWS RAY

MEMBER
2 POSTS

I have the same issue and got worse after clearing the computer. Seems as though fuel pump and shut down relay are locked out. Also check engine light is not staying lit, just a momentary flash when turning on the ignition. Tried a new computer same thing. If I ground pin 51 relays click and pump starts. Obious lack of - signal but no logic maps available for the ECU. Any Ideas?
Where does ECU get its ground from?

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Sunday, March 21st, 2010 AT 2:29 PM