Engine stumbles when it rains
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Engine stumbles when it rains
This is sorta long. Please be patient. I have an '02 7.3 Crew cab 4x4. It is doing two things and I don't know if they are related so here goes.
Problem #1 I tow a 12,000lb trailer with electric brakes. I have a Drawtite Electric brake module plugged into the factory harness. I turn up the intensity of the controler when the trailer is loaded with my Track hoe. When under these conditions and I apply the brakes the engine dies. If I turn down the intensity it is ok.
Problem #2 When I drive it in the rain the engine will momentarily shut down then come back. It is almost like it just drops out for a second. Sometimes when I come to a stop it will just die. It restarts without any problems. After three times the check engine light comes on. I bought a code reader and am waiting on it to do it again. I accidently erased the codes when I was working on my trailer winch circuit breaker connected to the battery. oops.
Any thoughts?
Thanks!!
Problem #1 I tow a 12,000lb trailer with electric brakes. I have a Drawtite Electric brake module plugged into the factory harness. I turn up the intensity of the controler when the trailer is loaded with my Track hoe. When under these conditions and I apply the brakes the engine dies. If I turn down the intensity it is ok.
Problem #2 When I drive it in the rain the engine will momentarily shut down then come back. It is almost like it just drops out for a second. Sometimes when I come to a stop it will just die. It restarts without any problems. After three times the check engine light comes on. I bought a code reader and am waiting on it to do it again. I accidently erased the codes when I was working on my trailer winch circuit breaker connected to the battery. oops.
Any thoughts?
Thanks!!
Elder User
Joined: Oct 2005
Posts: 786
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From: Reno nv
one problem sounds like typical CPS problems, search for the location pictures, front bottom of engine pass side near crank pulley, connect and disconnect the wires a couple of times spraying something like wd40 like holy water to clean up contacts. worse case is you may need a new one.
other sounds like you have multi axles and the brake is sucking up way too much current. Perhaps find a different feed, like the cigar lighter. Should be ( but not guaranteed) the red wire on the controller.
Good luck
other sounds like you have multi axles and the brake is sucking up way too much current. Perhaps find a different feed, like the cigar lighter. Should be ( but not guaranteed) the red wire on the controller.
Good luck
Last edited by piotrsko; Sep 7, 2006 at 07:01 PM. Reason: AAAARRRGGGHHH
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
Welcome to FTE Geezer 7.3. 
I agree with what poitrsko said. I sounds like you have two problems. You may need to run a separate wire for the brakes on the trailer that is activated with a load reduction relay or something.
I agree with what poitrsko said. I sounds like you have two problems. You may need to run a separate wire for the brakes on the trailer that is activated with a load reduction relay or something.
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Thanks fellas,
I ordered a IHC cps and will install asap. I will check the fenderwell IDM and do a wiggle test this weekend. You guys are the best.
I may replace the trailer brake controler with proportional one (Prodigy) and see what happens. This trailer is also pulled by a 2006 Bowtie Duralax
with no electrical problems.
Thanks for the responses. I will let you know what happens.
Geezer
I ordered a IHC cps and will install asap. I will check the fenderwell IDM and do a wiggle test this weekend. You guys are the best.
I may replace the trailer brake controler with proportional one (Prodigy) and see what happens. This trailer is also pulled by a 2006 Bowtie Duralax with no electrical problems. Thanks for the responses. I will let you know what happens.
Geezer
Senior User
Joined: Mar 2006
Posts: 487
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From: CT
I had a problem with my truck running some what like yours in the rain. I cleaned all of the plugs and connections under the hood with electrical connection cleaner, including the CPS. That cured whatever the problem was.
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Update
I have an update. I changed the cps (blue IH) and installed a prodigy brake controller. I drove through biblical rains last week here in Tampa and no more problems.
I appreciate all of the help.
Geezer
I appreciate all of the help.
Geezer
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