V10 Locked up
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Elder User
Joined: Jun 2001
Posts: 775
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From: Northern Va
V10 Locked up
I have a friend that has a 99 250 with a V10. I have searched the forums and found others have had the same problem with their V10's.
We are trying to determine what the issue is and where to look to see if there is a quicker fix other than going to a straight swap of the engine.
What have you fine folks seen as the issue with their v10 lock ups?
We can only turn the engine about 5 degrees then it stops, hard, 5 degrees back the other way and it stops hard again. The strange thing is, it ran just fine towing a trailer for several hundred miles, he parked it and bam, it wouldn't crank over. There was no sign of any distress before parking after unhooking the trailer. This same thing happend once before, and he thought it was a leaking injector as the engine would not turn over (like hydro lock), but would spin backwards. After turning the engine by hand backwards, it started up fine. Several short trips later, it showed no signs of an issue.
Again, it ran like a champ before being parked, then all of a sudden, the engine locked up.
Any help or thoughts would be appriciated.
We are trying to determine what the issue is and where to look to see if there is a quicker fix other than going to a straight swap of the engine.
What have you fine folks seen as the issue with their v10 lock ups?
We can only turn the engine about 5 degrees then it stops, hard, 5 degrees back the other way and it stops hard again. The strange thing is, it ran just fine towing a trailer for several hundred miles, he parked it and bam, it wouldn't crank over. There was no sign of any distress before parking after unhooking the trailer. This same thing happend once before, and he thought it was a leaking injector as the engine would not turn over (like hydro lock), but would spin backwards. After turning the engine by hand backwards, it started up fine. Several short trips later, it showed no signs of an issue.
Again, it ran like a champ before being parked, then all of a sudden, the engine locked up.
Any help or thoughts would be appriciated.
New User
Joined: May 2008
Posts: 19
Likes: 0
If it indeed is a hydrolock situation, pull the plug(s) and try to turn it over.
I might sugest doing one plug at a time and then trying to tur it over after each removal.
That would isolate the possibl leeky injectr.
Good luck
I might sugest doing one plug at a time and then trying to tur it over after each removal.
That would isolate the possibl leeky injectr.
Good luck
Senior User
Joined: Mar 2008
Posts: 342
Likes: 1
From: Maple Ridge, Canada
Well somebody has to keep this alive.
Is this truck an automatic or stick?
How many miles are on the motor?
What method are you using while attempting to roll the engine manually?
During these attempts have you removed the spark plugs, otherwise your fighting the compression in the cylinders?
I,ve owned my 99 for 8 years and havent heard of any chronic engine lock up problems. Although there is an archive somewhere here that talks about a recall on defective parts installed on 6.8l produced between 3 mar 03 through 22 Apr 03. [posted by booty101]
A failing starter could give the impression that the engine is locked up. All the sounds of a routine start but no engine turn over. In my experience this type of failure comes on intermittently cranks like a champ one time and the next time no go. Give the starter a whack with a hammer while someone is cranking. sometimes that'll do it, not a repair but if it cranks at least your worries will be lessened.
Is this truck an automatic or stick?
How many miles are on the motor?
What method are you using while attempting to roll the engine manually?
During these attempts have you removed the spark plugs, otherwise your fighting the compression in the cylinders?
I,ve owned my 99 for 8 years and havent heard of any chronic engine lock up problems. Although there is an archive somewhere here that talks about a recall on defective parts installed on 6.8l produced between 3 mar 03 through 22 Apr 03. [posted by booty101]
A failing starter could give the impression that the engine is locked up. All the sounds of a routine start but no engine turn over. In my experience this type of failure comes on intermittently cranks like a champ one time and the next time no go. Give the starter a whack with a hammer while someone is cranking. sometimes that'll do it, not a repair but if it cranks at least your worries will be lessened.
Thread Starter
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Elder User
Joined: Jun 2001
Posts: 775
Likes: 0
From: Northern Va
Perplexed
Is this truck an automatic or stick?
Automatic
How many miles are on the motor?
135,000
What method are you using while attempting to roll the engine manually?
ratchet on crank bolt
During these attempts have you removed the spark plugs, otherwise your fighting the compression in the cylinders?Plugs are still in, but this isn't a compression stop, it's a hard stop with an audible “clank”. The last time I heard a noise like this, it was a broken rod. The problem is, it ran normally prior to being turned off. No odd noises, no banging nothing that would indicate a major engine failure.
I,ve owned my 99 for 8 years and havent heard of any chronic engine lock up problems. Although there is an archive somewhere here that talks about a recall on defective parts installed on 6.8l produced between 3 mar 03 through 22 Apr 03. It's a 99
A failing starter could give the impression that the engine is locked up. All the sounds of a routine start but no engine turn over. In my experience this type of failure comes on intermittently cranks like a champ one time and the next time no go. Give the starter a whack with a hammer while someone is cranking. sometimes that'll do it, not a repair but if it cranks at least your worries will be lessened.
We thought of the starter binding, but even with the starter out, the engine did the same thing
Thanks for the thoughts. Keep them coming.
Automatic
How many miles are on the motor?
135,000
What method are you using while attempting to roll the engine manually?
ratchet on crank bolt
During these attempts have you removed the spark plugs, otherwise your fighting the compression in the cylinders?Plugs are still in, but this isn't a compression stop, it's a hard stop with an audible “clank”. The last time I heard a noise like this, it was a broken rod. The problem is, it ran normally prior to being turned off. No odd noises, no banging nothing that would indicate a major engine failure.
I,ve owned my 99 for 8 years and havent heard of any chronic engine lock up problems. Although there is an archive somewhere here that talks about a recall on defective parts installed on 6.8l produced between 3 mar 03 through 22 Apr 03. It's a 99
A failing starter could give the impression that the engine is locked up. All the sounds of a routine start but no engine turn over. In my experience this type of failure comes on intermittently cranks like a champ one time and the next time no go. Give the starter a whack with a hammer while someone is cranking. sometimes that'll do it, not a repair but if it cranks at least your worries will be lessened.
We thought of the starter binding, but even with the starter out, the engine did the same thing
Thanks for the thoughts. Keep them coming.
Senior User
Joined: Mar 2008
Posts: 342
Likes: 1
From: Maple Ridge, Canada
You,ve got my curiosity going. I read on some other sites that people have had trouble with the torque converter lock up staying on. If I recall these were mustangs and crown vics.
I really couldn,t say if that is even possible. I have never owned an auto [inherently weak] but maybe if you got the rear wheels off the ground and tried to turn the engine over ?
or unplugged the wires to the tranny, It may release. Then again maybe it siezes in place.
Where is the transmission guy.
I really couldn,t say if that is even possible. I have never owned an auto [inherently weak] but maybe if you got the rear wheels off the ground and tried to turn the engine over ?
or unplugged the wires to the tranny, It may release. Then again maybe it siezes in place.
Where is the transmission guy.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,712
Likes: 2,629
From: SE Florida
It isn't the torque converter or transmission. You would need multiple failures in the transmission and in the torque converter for this to happen. You'd be more likely to win the Mega Millions and Powerball lotteries both in the same week.
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
when my torque or transmission died it stalled the engine
when I went to restart it was like the engine was locked
after about an hour it started but never moved again or aven attempt to move
when I went to restart it was like the engine was locked
after about an hour it started but never moved again or aven attempt to move
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Elder User
Joined: May 2008
Posts: 559
Likes: 0
Busted chain tensioner? Had that happen on my 4.6 t-bird a few years ago. Ran good until I shut it off. Tried to start the next day and it was locked up like you describe. the tesioner was busted and binding the chain in such a way to not let the engine turn but a few degrees.
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Elder User
Joined: Nov 2007
Posts: 528
Likes: 1
From: Canada, ON New Market
I beleive its hydrolock but from a failed intake gasket and coolant has now flooded one or many of your cylinders.
If the motor was working fine right before you turned it off, then theres not much that can be your problem.
other then pulling the plugs one at a time and turning the motor, theres no real way to figure out whats wrong with your motor then tearing it down......
If the motor was working fine right before you turned it off, then theres not much that can be your problem.
other then pulling the plugs one at a time and turning the motor, theres no real way to figure out whats wrong with your motor then tearing it down......
Senior User
Joined: Oct 2006
Posts: 196
Likes: 0
From: Corn country
Quick and easy checks first:
pull all the plugs and try to rotate, if it's a hydro lock it will have been a progressing problem and plugs will tell the tale of where the problem lies if that's where it's at.
Try putting trans in nuetral to see if you can manually turn driveshaft
if it's still locked up with all plugs removed
pull inspection cover and use a flash light and mirror to inspect for any convertor bolts that may have sheered and are binding up
while your donw there make sure starter gear is not locked out/extended into the flywheel binding it up
Those are the easy things.
Pull the oil pan to make sure you dont have any tell tales of broken rods/mains....rotating assemly misalignment due to breakage
Then i'd go and pull the front of the engine off and inspect timing chain to be sure it did'nt stretch too far, break and cause a bind behind the cover.
pull all the plugs and try to rotate, if it's a hydro lock it will have been a progressing problem and plugs will tell the tale of where the problem lies if that's where it's at.
Try putting trans in nuetral to see if you can manually turn driveshaft
if it's still locked up with all plugs removed
pull inspection cover and use a flash light and mirror to inspect for any convertor bolts that may have sheered and are binding up
while your donw there make sure starter gear is not locked out/extended into the flywheel binding it up
Those are the easy things.
Pull the oil pan to make sure you dont have any tell tales of broken rods/mains....rotating assemly misalignment due to breakage
Then i'd go and pull the front of the engine off and inspect timing chain to be sure it did'nt stretch too far, break and cause a bind behind the cover.
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