Studdering problem
Posting Guru
Joined: Jun 2004
Posts: 1,781
Likes: 1
From: Central NY
I take that back... sorry I had missed the post where you said you had a manual tranny. Yes thats what its called but its for automatics, you can buy additivie or tranny fluid that already has it in.
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New User
Joined: Oct 2005
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I haven't done much more for this problem yet at this time. I have been just dealing with it for now.
I have noticed one thing more that I did not notice before. This problem only seems to ocure after the engine has warmed up. When I take off and the engine is not up to operating temp yet It seems that I can not notice this studdering problem. I am not saying it is not there. What I am saying is that it is not as prominent. I don't seem to even notice it.
I have noticed one thing more that I did not notice before. This problem only seems to ocure after the engine has warmed up. When I take off and the engine is not up to operating temp yet It seems that I can not notice this studdering problem. I am not saying it is not there. What I am saying is that it is not as prominent. I don't seem to even notice it.
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Originally Posted by steamplant
I have the same problem been kicking my a for over a year I'm gonna try the IAC tonight, let us know if the problem stays gone
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Joined: Dec 2005
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From: upstate NNY WATERTOWN
I had a problem something like yours a few years ago with my 1992 5.8 53,000
mile when I got it and the guy before me never drove it in winter.I had shop look at it and they said the thermostat in the vechile was the wrong temp for what the computer setup called for they changed to right one and problem disappeared and I
have never had it happen again have 112,000 miles now and run real strong
mile when I got it and the guy before me never drove it in winter.I had shop look at it and they said the thermostat in the vechile was the wrong temp for what the computer setup called for they changed to right one and problem disappeared and I
have never had it happen again have 112,000 miles now and run real strong
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Originally Posted by stevcher
I had a problem something like yours a few years ago with my 1992 5.8 53,000
mile when I got it and the guy before me never drove it in winter.I had shop look at it and they said the thermostat in the vechile was the wrong temp for what the computer setup called for they changed to right one and problem disappeared and I
have never had it happen again have 112,000 miles now and run real strong
mile when I got it and the guy before me never drove it in winter.I had shop look at it and they said the thermostat in the vechile was the wrong temp for what the computer setup called for they changed to right one and problem disappeared and I
have never had it happen again have 112,000 miles now and run real strong
I have changed the TPS and the thermostat with not luck at all. But I also noticed that I have white smoke coming out my exhaust and it is not oil. I am going through about 1/2 gallon of anti freeze every two weeks. So I am going to pull the head off this week and hopefully it is only the head gasket and not the head.
Once this is fixed I am praying that my studdering problem will go away.
Laughing Gas
Joined: Oct 2005
Posts: 1,226
Likes: 42
From: The OC
I just replaced my transmission modulator today because I was pumping out white smoke. I was about to pull the head and replace the head gasket, but thanks to this site, I replaced the modulator and fixed the problem. I replaced it about 2 months ago but must have had a bad unit. Run your engine for a minute and check the vacuum line coming from the modulator and disconnect at the intake manifold. If you see oil in the line, change the modulator, about $20. Be careful not to lose the pin in the modulator. Before you buy any more parts, I suggest you buy your own code reader. I nickled and dimed myself to death until I got a code reader. Best tool I ever bought. Takes most of the guessing away. You can also clear old codes and start fresh, and that can narrow down any new problems.
Last edited by lv2race; Jan 1, 2006 at 10:22 PM.
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Originally Posted by Iron Horseman
Just got my 95 F-150 fixed from this. Check out the "Hesitation" thread in this forum.It covers it all. But most likely is the IAC. Simple 10 minute fix.
Thanks.
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Similar problem with my truck
I also have this problem, i have had it for the better part of a year, and havent been able to figure it out. I've got a '94 f-150 with the 4.9, and the 5 speed tranny. It's got 85k miles on it and no other problems. To be specific this problem only happens when accelerate real hard, and it happens in each sucessive gear at more or less the same rpm band. cant be sure what rpm, cause i dont have a tach, but it happens just after i shift on the lower end, sort of bucks like i'm running out of gas, then i ease up on the throttle, and it gets past it, so i hit the gas hard again and it roars up towards the top rpm range and then gives another shudder right before i should shift. Again this only happens when i'm really laying in the throttle, i.e. highway on-ramps, ofrpassing other vehicles, For some reason the truck does not get enough fuel in those places but otherwise works fine, it sounds like alot of people are experiencing this or something similar to it in more or less the same vehicle. for the life of me i just cant figure it out.
Senior User
Joined: Nov 2004
Posts: 447
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From: Florida
Originally Posted by mechanicor
I also have this problem, i have had it for the better part of a year, and havent been able to figure it out. I've got a '94 f-150 with the 4.9, and the 5 speed tranny. It's got 85k miles on it and no other problems. To be specific this problem only happens when accelerate real hard, and it happens in each sucessive gear at more or less the same rpm band. cant be sure what rpm, cause i dont have a tach, but it happens just after i shift on the lower end, sort of bucks like i'm running out of gas, then i ease up on the throttle, and it gets past it, so i hit the gas hard again and it roars up towards the top rpm range and then gives another shudder right before i should shift. Again this only happens when i'm really laying in the throttle, i.e. highway on-ramps, ofrpassing other vehicles, For some reason the truck does not get enough fuel in those places but otherwise works fine, it sounds like alot of people are experiencing this or something similar to it in more or less the same vehicle. for the life of me i just cant figure it out.
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Joined: Jun 2004
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Originally Posted by attroll
I have noticed one thing more that I did not notice before. This problem only seems to ocure after the engine has warmed up. When I take off and the engine is not up to operating temp yet It seems that I can not notice this studdering problem. I am not saying it is not there. What I am saying is that it is not as prominent. I don't seem to even notice it.
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New User
Joined: Oct 2005
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Originally Posted by lv2race
I just replaced my transmission modulator today because I was pumping out white smoke. I was about to pull the head and replace the head gasket, but thanks to this site, I replaced the modulator and fixed the problem. I replaced it about 2 months ago but must have had a bad unit. Run your engine for a minute and check the vacuum line coming from the modulator and disconnect at the intake manifold. If you see oil in the line, change the modulator, about $20. Be careful not to lose the pin in the modulator. Before you buy any more parts, I suggest you buy your own code reader. I nickled and dimed myself to death until I got a code reader. Best tool I ever bought. Takes most of the guessing away. You can also clear old codes and start fresh, and that can narrow down any new problems.