Studder on accel
Thread Starter
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Laughing Gas
Joined: May 2006
Posts: 1,192
Likes: 0
From: Oakville, Ontario
Studder on accel
My ride again has started to develop a small studder during acceleration. It seems like only when it's cold. But when the temps are at normal it's not there.
At work now, but would like to get a heads up on it by the time I get home. To know what to look for.
No modes, no codes nothing but the studder.
Using T6 every 5000klm, fuel filter every 15000klm.
I have a fuel filter at home and will first replace it, before anything else.
BTW, all filter are OEM
Thanks for any ideas/help
ps about a year ago I had something similar. But I through some codes. I will look them up here at FTE.
At work now, but would like to get a heads up on it by the time I get home. To know what to look for.
No modes, no codes nothing but the studder.
Using T6 every 5000klm, fuel filter every 15000klm.
I have a fuel filter at home and will first replace it, before anything else.
BTW, all filter are OEM
Thanks for any ideas/help
ps about a year ago I had something similar. But I through some codes. I will look them up here at FTE.
Thread Starter
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Laughing Gas
Joined: May 2006
Posts: 1,192
Likes: 0
From: Oakville, Ontario
More info
I just went outside to the truck to check on some readings.
KOEO
BAR = 14.5v
EBP = 14.9v
MAP = 14.5v
FICM = 47.5v
mechanical fuel pressure reading 65psi
what else could I look at?
I just went outside to the truck to check on some readings.
KOEO
BAR = 14.5v
EBP = 14.9v
MAP = 14.5v
FICM = 47.5v
mechanical fuel pressure reading 65psi
what else could I look at?
Thread Starter
|
Laughing Gas
Joined: May 2006
Posts: 1,192
Likes: 0
From: Oakville, Ontario
Doesn't look like anyone around here sells it.
I will look for it.
Anything else I could use.
I do use DK on every other fill up. Maybe every fill up, and maybe an extra shot of it this next fill up.
I will look for it.
Anything else I could use.
I do use DK on every other fill up. Maybe every fill up, and maybe an extra shot of it this next fill up.
Thread Starter
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Laughing Gas
Joined: May 2006
Posts: 1,192
Likes: 0
From: Oakville, Ontario
What do you mean the other side of the board? (vp, lp)?
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Laughing Gas
Joined: May 2006
Posts: 1,192
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From: Oakville, Ontario
I will check at lunch.
BTW
This morning the shudder was there until the truck was fully warmed up. Then it seemed to slowly disappear.
BTW
This morning the shudder was there until the truck was fully warmed up. Then it seemed to slowly disappear.
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Lead Driver
Joined: Sep 2012
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From: Manteca,Ca
Vp vehicle power , LP logic power other side,mp main power. Always test these at cold start as when the ficm heats up the values change for the better hence the reason some stiction gets better from ficm , oh and get some zip ties to fasten the ficm connection back in snug this could also be an issue . On the ebp as bizmic has mentioned monitor ebp, map, LP,vp
Thread Starter
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Laughing Gas
Joined: May 2006
Posts: 1,192
Likes: 0
From: Oakville, Ontario
Couldn't disconnect EBP at lunch. I purchased a new one just in case. I did notice that my boost topped off at 21psi when the studder was happening , but on my way may to work the truck was fully warmed up and the spudder was gone and boost reached 27-28psi.
When I get home I will remove the EBP sensor and clean out the tube and have a good look at the sensor.
warm engine
KOEO
BAR = 14.5v
EBP = 14.9v
MAP = 14.5v
FICM = 47.5v
mechanical fuel pressure reading 65psi
My ficm this morning (cold) was 47.5 on engine crank and running.
will check map when I get home.
Hope I clear this up tonight. I have got to be at a sailing regatta Friday night with a trailer.
When I get home I will remove the EBP sensor and clean out the tube and have a good look at the sensor.
warm engine
KOEO
BAR = 14.5v
EBP = 14.9v
MAP = 14.5v
FICM = 47.5v
mechanical fuel pressure reading 65psi
My ficm this morning (cold) was 47.5 on engine crank and running.
will check map when I get home.
Hope I clear this up tonight. I have got to be at a sailing regatta Friday night with a trailer.
FTE Leadership Emeritus
Joined: Sep 2003
Posts: 12,246
Likes: 761
From: Houston, Texas
Don't just stop at the tube, the fitting at the head is where it REALLY gets clogged more often than not. On both my trucks and even customer vehicles I've worked on, I found them clogged. As soon as I clean the EBPS, EGR valve, MAP nipple on the intake manifold, and perform the VGT relearn, they leave with a completely different truck.
Thread Starter
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Laughing Gas
Joined: May 2006
Posts: 1,192
Likes: 0
From: Oakville, Ontario
I replaced the EBP sensor and cleaned out the tube. Removed and cleaned the IAT2 sensor. The MAP tube and nipple cleaned.
Took the truck out for a short run and no noticeable studded boost never got over 20psi.
No CEL.
Time to rest and take another look at it in the morning.
BTW how do I do a VGT relearn?
Took the truck out for a short run and no noticeable studded boost never got over 20psi.
No CEL.
Time to rest and take another look at it in the morning.
BTW how do I do a VGT relearn?
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
I replaced the EBP sensor and cleaned out the tube. Removed and cleaned the IAT2 sensor. The MAP tube and nipple cleaned.
Took the truck out for a short run and no noticeable studded boost never got over 20psi.
No CEL.
Time to rest and take another look at it in the morning.
BTW how do I do a VGT relearn?
Took the truck out for a short run and no noticeable studded boost never got over 20psi.
No CEL.
Time to rest and take another look at it in the morning.
BTW how do I do a VGT relearn?
Disconnect the battery cables, turn the light switch on for 30 seconds then off, and reconnect the battery cables.
FTE Leadership Emeritus
Joined: Sep 2003
Posts: 12,246
Likes: 761
From: Houston, Texas
I replaced the EBP sensor and cleaned out the tube. Removed and cleaned the IAT2 sensor. The MAP tube and nipple cleaned.
Took the truck out for a short run and no noticeable studded boost never got over 20psi.
No CEL.
Time to rest and take another look at it in the morning.
BTW how do I do a VGT relearn?
Took the truck out for a short run and no noticeable studded boost never got over 20psi.
No CEL.
Time to rest and take another look at it in the morning.
BTW how do I do a VGT relearn?
You can clean the tube and replace the sensor all you want, but if the fitting is clogged, you're still going to get the same results.
Post #4: https://www.ford-trucks.com/forums/6...ml#post4956068