OD light blinking/injector pump adjustments
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Senior User
Joined: Feb 2009
Posts: 157
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From: Duanesburg, NY
OD light blinking/injector pump adjustments
hey guys i had a question about my tranny i just bought my truck from a guy who had the tranny rebuilt 2 weeks ago (i say the reciepts so he wasnt lieing) but i just noticed today that the od light is blinking and it shifts kinda funny like it hesitates to go into the next gear....any thoughts? im calling the place where it was rebuilt on monday.....also on the injector pump what screw is it that i turn to deliver more fuel and make it smoke more? thanks
-michael
-michael
Cargo Master
Joined: Feb 2008
Posts: 3,409
Likes: 1
From: back in SE Iowa
the blinking od light is your tach sensor about to crap out.is a 1" nut with 2 wires coming out of it below the vaccum pump.thats where its at on my 94 anyway.as for turning the pump up there are instructions on here how to do it but make sure you get a pyrometer before messing with it.you adjust it on the pass. side of the ip behind the triangle shaped plate you remove 2 bolts and turn the screw.it doesnt take much 2 flats is more than enough.(about 1/8th of a turn)or so is a starting point.good luck.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Peterbuilt 376x,
Welcome to FTE and the IDI diesel forum.
The E4OD requires a signal from the speed sensor in the rear axle and a signal from the tach sensor to shift right.
Are both your speedo and tach working correctly?
The blinking OD light tells you that the tranny is in limp mod, not good to drive it like that.
Welcome to FTE and the IDI diesel forum.
The E4OD requires a signal from the speed sensor in the rear axle and a signal from the tach sensor to shift right.
Are both your speedo and tach working correctly?
The blinking OD light tells you that the tranny is in limp mod, not good to drive it like that.
Elder User
Joined: Dec 2008
Posts: 737
Likes: 0
From: Page Az.
Replace your tack sensor, its on top of your upper gear housing, I believe it is ford only part. Get a egt gauge if you don't have one and please don't make the only reason to turn up the IP to make more smoke
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Black smoke usually means high EGT.
And high EGT can mean engine damage if you can't monitor the temps to se exactly how high they are.
For this reason, I advise against turning the fuel up till you have a pyrometer.
Tach sensor is a Ford only item, about 50 dollars which is much better than a tranny rebuild.
And high EGT can mean engine damage if you can't monitor the temps to se exactly how high they are.
For this reason, I advise against turning the fuel up till you have a pyrometer.
Tach sensor is a Ford only item, about 50 dollars which is much better than a tranny rebuild.
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
Not enough info to place blame on any one sensor. Don't start spending money on replacement parts until you can narrow down the problem because that can be an exercise in frustration. It could very well be that whatever is the problem now was the reason the transmission was rebuilt before (weather it needed it or not).
What year is the truck?
Do the speedometer and tachometer work properly?
What is your throttle position sensor voltage?
Does it go though all the gears?
Does the torque converter lock up?
What year is the truck?
Do the speedometer and tachometer work properly?
What is your throttle position sensor voltage?
Does it go though all the gears?
Does the torque converter lock up?
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