2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

Fuel issue

Thread Tools
 
Search this Thread
 
  #11  
Old 07-29-2011 | 10:19 PM
Mdbasser's Avatar
Mdbasser
Thread Starter
|
Registered User
Joined: Jul 2011
Posts: 9
Likes: 0
From: Maryland
Default

When I tested with the ohms meter I was just testing the continuance of a circuit not load. I connected to one end of wire and the other end to look for resistance for a break or bad wire.

Swap your ground wire over to power, and run the fuel pump that way, see if the pump is a little more enthusiastic.

Not sure what you are describing here. Both ground and power to power?

PCM only trips the relay, or not..... that's the only control it has.

So if I have some volts then the PCM is working?
What else could kick the relay? Could it run through something else? I believe I read this some where. Really grasping right now. I have many hour trying to diagnose this problem
 
  #12  
Old 07-29-2011 | 10:40 PM
HeyYou's Avatar
HeyYou
Administrator
Joined: Apr 2010
Posts: 82,859
Likes: 3,447
From: Clayton MI
Default

For the wire, replace the power wire instead of the ground. (still need to have the ground, but, just use the stock part.)

So far as I know, the PCM is the only thing the controls the relay, and that is the only source of power for the pump. If you are getting a massive voltage drop across the wire, (good 12v source at the relay, but little or nothing at the pump) I would suspect a bad connection somewhere. It would still show zero resistance, but, wouldn't have the current capacity to run the pump. If you are getting the low voltage reading at the connector, disconnected from the pump..... I would first suspect the wire, or any intervening connections.

You can grab the 96 service manual from here, fuel pump wiring diagrams are on pages 8W-30-20, and 8W-30-21. There is a joint connector in there (C129), which I would check for corrosion, and also, Fuse 8, in the PDC...... PCM is powered from that as well.... so, if it is marginal..... might give you some interesting issues.
 




All times are GMT -4. The time now is 05:54 PM.