transmission problem
Senior User
Joined: Dec 2001
Posts: 423
Likes: 0
From: Cabot, Arkansas
Originally Posted by Loyd Lucas
I think what you are experiencing is called "hunting", the tranny can't decide between keeping the converter locked and staying in od or unclocking the conveerter and dropping out of od. Read your owners manuals, it talks about "hunting". And yes, you are supposed to lock it out of od if it "hunts".
Shouldn't I see a small RPM shift with TQ lock/unlock? My RPM does not change when the "slip" occurs.
My truck is a 2001 with the V-10 and 4.30 limited slip gears. The tires are the stock 265/75R16s.
Edmo
Senior User
Joined: Dec 2001
Posts: 423
Likes: 0
From: Cabot, Arkansas
I've got a road test with the local Service Mgr this Thursday (1 Apr) who seems to think it might be a faulty coil on one of the plugs. We will put the computer code checker on it after I demo the problem. I have seen the "cannot duplicate problem" in the past with other shops... Seeing is believing.
Hopefully I can duplicate the problem during the road test, otherwise he might think it is an elaborate "April Fools" joke!
More to come...
Edmo
Hopefully I can duplicate the problem during the road test, otherwise he might think it is an elaborate "April Fools" joke!
More to come...
Edmo
Last edited by Edmo; Mar 29, 2004 at 07:48 PM.
Senior User
Joined: Dec 2001
Posts: 423
Likes: 0
From: Cabot, Arkansas
Well, it was April Fools...
I couldn't get it to miss/skip/slip with the Service Manager (SM) in the truck during the test ride. They took it anyway and drove it with the computer hooked up, also with no sucess.
I picked up the truck at the end of the day and the SM said to bring it by any time it does it and they will drop everything, hook up the computer and try to capture the fault code. On the way home, guess what it did! I returned and dropped it off again, but the technicians had all left for the day.
I'm headed out of town tommorrow and will leave the truck with them. We'll see what they come up with when I return on Monday. Thank goodness my '92 Jeep Cherokee is running good at 102,000 miles!
Edmo
I couldn't get it to miss/skip/slip with the Service Manager (SM) in the truck during the test ride. They took it anyway and drove it with the computer hooked up, also with no sucess.
I picked up the truck at the end of the day and the SM said to bring it by any time it does it and they will drop everything, hook up the computer and try to capture the fault code. On the way home, guess what it did! I returned and dropped it off again, but the technicians had all left for the day.
I'm headed out of town tommorrow and will leave the truck with them. We'll see what they come up with when I return on Monday. Thank goodness my '92 Jeep Cherokee is running good at 102,000 miles!
Edmo
Last edited by Edmo; Apr 1, 2004 at 07:34 PM.
Senior User
Joined: Dec 2001
Posts: 423
Likes: 0
From: Cabot, Arkansas
I'm home from the trip and my big red truck is back from the Ford boys. It's all fixed now...
Just like the SM thought, a malfunctioning coil pack... I'm not sure if it is important to others out there, but it was the #4 cylinder.
They were able to duplicate the problem this time with the computer hooked up. I was not getting a "CHECK ENGINE LIGHT", but as soon as it missed they figured out which cylinder it was. The missing was just one "bump" or "skip" which I originally miss-diagnosed as a tranny problem.
I'm just relieved it was something simple and not a deep, dark problem in the tranny!
Edmo
Just like the SM thought, a malfunctioning coil pack... I'm not sure if it is important to others out there, but it was the #4 cylinder.
They were able to duplicate the problem this time with the computer hooked up. I was not getting a "CHECK ENGINE LIGHT", but as soon as it missed they figured out which cylinder it was. The missing was just one "bump" or "skip" which I originally miss-diagnosed as a tranny problem.
I'm just relieved it was something simple and not a deep, dark problem in the tranny!
Edmo
Last edited by Edmo; Apr 5, 2004 at 06:08 PM.
New User
Joined: Feb 2004
Posts: 16
Likes: 0
From: new jersey
thanks edmo for the update......my truck seems to be running worse as the weather here in the northeast warms up.
its sarted missing now in all gears so i am ruling out the trans as being a prob.
so i am back to the coil pack thing as well.
but with no light i guess i am forced to go to ford.
it def seems to be temp related as the moter heats up the worse it runs.
i guess my other option would be to buy one coil pack and play lets find the bad one...LOL
what do you think? i will have to install the new coil pack 10 times till i hit the bad one...ugh
but it might save a few dollars.
its sarted missing now in all gears so i am ruling out the trans as being a prob.
so i am back to the coil pack thing as well.
but with no light i guess i am forced to go to ford.
it def seems to be temp related as the moter heats up the worse it runs.
i guess my other option would be to buy one coil pack and play lets find the bad one...LOL
what do you think? i will have to install the new coil pack 10 times till i hit the bad one...ugh
but it might save a few dollars.
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Senior User
Joined: Dec 2001
Posts: 423
Likes: 0
From: Cabot, Arkansas
Crew V-10,
Fortunately, my truck was under warranty so this repair was on Mr. Ford's ticket. I think the Service Manager said the coils run between $100-$130 each... Not cheap for what you actually get. Surely, a parts house carries the coils at a cheaper price.
I have the Ford extended drivetrain warranty and they checked the specifics... Coils are NOT covered by my extended warranty. I'm glad I caught this problem before my 36,000 / 3 year basic warranty expired.
I don't know if any of the after-market computers will show which coil is bad, but the computer the Ford boys use obviously will. It might be worth the costs to have them (or someone with a computer) tell you where the problem lies. If not, you might chase you tail if more than 1 coil is malfunctioning... With my luck, I would be on cylinder #10 before I found the bad one. That would be after I stripped out 4 bolts!
Edmo
Fortunately, my truck was under warranty so this repair was on Mr. Ford's ticket. I think the Service Manager said the coils run between $100-$130 each... Not cheap for what you actually get. Surely, a parts house carries the coils at a cheaper price.
I have the Ford extended drivetrain warranty and they checked the specifics... Coils are NOT covered by my extended warranty. I'm glad I caught this problem before my 36,000 / 3 year basic warranty expired.
I don't know if any of the after-market computers will show which coil is bad, but the computer the Ford boys use obviously will. It might be worth the costs to have them (or someone with a computer) tell you where the problem lies. If not, you might chase you tail if more than 1 coil is malfunctioning... With my luck, I would be on cylinder #10 before I found the bad one. That would be after I stripped out 4 bolts!
Edmo
New User
Joined: Feb 2004
Posts: 16
Likes: 0
From: new jersey
well it proved to be the #10 coil pack was dropping out,they replaced it for a $279...ouch, guess we are over a barrel here when it comes to trouble shooting these coils, ford has the the equipment.
i am still interested in looking into getting a code reader for the hell of it.
thanks guys for all your input on this thing.
i am still interested in looking into getting a code reader for the hell of it.
thanks guys for all your input on this thing.
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
Originally Posted by Crew V-10
well it proved to be the #10 coil pack was dropping out,they replaced it for a $279...ouch, guess we are over a barrel here when it comes to trouble shooting these coils, ford has the the equipment.
i am still interested in looking into getting a code reader for the hell of it.
thanks guys for all your input on this thing.
i am still interested in looking into getting a code reader for the hell of it.
thanks guys for all your input on this thing.
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas