New CPS still stalling
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Junior User
Joined: Dec 2008
Posts: 53
Likes: 0
From: The Woodlands,TX
New CPS still stalling
Istalled a new cps, truck still stalling. Went to autozone to pull codes - dio would not communicate with truck???
Going to replace the ipr today,
Why doesn't the code box communicate- we tried it 3 times, "unable to connect" message.
Going to replace the ipr today,
Why doesn't the code box communicate- we tried it 3 times, "unable to connect" message.
Fleet Mechanic
Joined: Dec 2010
Posts: 1,546
Likes: 9
From: Wellington, Co
Unfortunatly I do not have one, yet.
Trying to Gain Knowledge
Joined: Jun 2003
Posts: 1,571
Likes: 2
From: Ezzell, TX
The scanners from vatozone won't read the 7.3. You will need to find someone with a scanner, such as an AE (auto enginuity). Check out Tugly's link on one of his posts for the B.E.S.T. Map for someone close by you.
Better yet, send a pm to toreador_diesel.
Better yet, send a pm to toreador_diesel.
Junior User
Joined: Mar 2011
Posts: 91
Likes: 0
From: Pensacola, FL
I have a 99 and put 3 different cps in it before I found one that worked right. I had to get the one from the dealership that they sell for the 97 which is different from the one they sell for the 99, so you may want to try that. Here is my post of when I was fighting this battle for you to read through, but long story short put the cps for the 97(from the dealership) in mine after a recommendation from people on this board. There is a link in that thread from one of the guys who responded about testing the cps the stealership sells for the 97.
https://www.ford-trucks.com/forums/1...n-the-air.html
https://www.ford-trucks.com/forums/1...n-the-air.html
Thread Starter
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Junior User
Joined: Dec 2008
Posts: 53
Likes: 0
From: The Woodlands,TX
I have a 99 and put 3 different cps in it before I found one that worked right. I had to get the one from the dealership that they sell for the 97 which is different from the one they sell for the 99, so you may want to try that. Here is my post of when I was fighting this battle for you to read through, but long story short put the cps for the 97(from the dealership) in mine after a recommendation from people on this board. There is a link in that thread from one of the guys who responded about testing the cps the stealership sells for the 97.
https://www.ford-trucks.com/forums/1...n-the-air.html
https://www.ford-trucks.com/forums/1...n-the-air.html
Cargo Master
Joined: Oct 2007
Posts: 2,712
Likes: 107
From: BoCoMo
A bad cps most likely will not 'stall' your truck.... it will kill it on the spot. Electrical interruption, truck goes down. The truck may start back up ok and run for awhile.
I have a SuperChip tuner and it can read the codes for our trucks.
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Post Fiend
Joined: Dec 2009
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From: Livoina,La
Where did you get the CPS ?
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Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I might have all my scenarios mixed up in my head, but didn't I read something about a combination of LED tail lights and wipers on stalling the truck?
Even if I'm wrong, did you make any changes to the truck at all recently... no matter how trivial it may seem?
Even if I'm wrong, did you make any changes to the truck at all recently... no matter how trivial it may seem?
Senior User
Joined: Mar 2005
Posts: 289
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From: Va. Beach, VA
As my dad used to say..."you're not holding your mouth right"...
Bet it's not the CPS. Check the other diesel common culprits like your IPC plug/connector for oil in it, monitor oil levels in the reservoir 1st thing in the morning pre-start, fuel pressure etc. Might even go deep on the weekend in a warm lighted place and pull the valve covers to check not only the connectors and/or do the mod, but buy the o-ring kit/s and change your injector o-rings and whatever else time & money will let you do while you got access. Syphon out the oil and pull the reservoir off and check your gasket screen (if the 99.5 has it?). Good opportunity to clean the thing out if nothing else.
Does it seem while at idle to slow down on rpm's then chug itself out? Or does it just die? Hear any hissing under the hood while at idle indicating possible vacume leak?
Bet it's not the CPS. Check the other diesel common culprits like your IPC plug/connector for oil in it, monitor oil levels in the reservoir 1st thing in the morning pre-start, fuel pressure etc. Might even go deep on the weekend in a warm lighted place and pull the valve covers to check not only the connectors and/or do the mod, but buy the o-ring kit/s and change your injector o-rings and whatever else time & money will let you do while you got access. Syphon out the oil and pull the reservoir off and check your gasket screen (if the 99.5 has it?). Good opportunity to clean the thing out if nothing else.
Does it seem while at idle to slow down on rpm's then chug itself out? Or does it just die? Hear any hissing under the hood while at idle indicating possible vacume leak?
Post Fiend
Joined: Dec 2009
Posts: 15,505
Likes: 18
From: Livoina,La
Parts store CPS have been known to pick up interference from the wipers and kill the truck.
Lead Driver
Joined: Jul 2003
Posts: 7,404
Likes: 52
From: Wheatland, Mo
THe rianing is what I would be looking at...
Check the backside of the fuse box under the dash and the GEM. Known issue for a leak to form at the top of the A pillar. This runs down the pillar and drops down to the fuse box and GEM causing all sorts of wierd issues.
Pull the fuse box & GEM and check the back for water marks and/or corrosion.
Check the backside of the fuse box under the dash and the GEM. Known issue for a leak to form at the top of the A pillar. This runs down the pillar and drops down to the fuse box and GEM causing all sorts of wierd issues.
Pull the fuse box & GEM and check the back for water marks and/or corrosion.
Thread Starter
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Junior User
Joined: Dec 2008
Posts: 53
Likes: 0
From: The Woodlands,TX
SES
Got the light one time during a stall going down the road at 55mph. Engine just stops, no throttle, then start back up and runs like a champ.
Thread Starter
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Junior User
Joined: Dec 2008
Posts: 53
Likes: 0
From: The Woodlands,TX
THe rianing is what I would be looking at...
Check the backside of the fuse box under the dash and the GEM. Known issue for a leak to form at the top of the A pillar. This runs down the pillar and drops down to the fuse box and GEM causing all sorts of wierd issues.
Pull the fuse box & GEM and check the back for water marks and/or corrosion.
Check the backside of the fuse box under the dash and the GEM. Known issue for a leak to form at the top of the A pillar. This runs down the pillar and drops down to the fuse box and GEM causing all sorts of wierd issues.
Pull the fuse box & GEM and check the back for water marks and/or corrosion.
This thing is driving me nuts.