E40D transmission/Ignition problem...Any advice would help
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From: Holloman AFB, NM
E40D transmission/Ignition problem...Any advice would help
Hello all....new here. I have been chasing my F150 for a few weeks now, and do have some fixes I think. I just wanted to get yalls opinion.
When cold...the truck starts great! After it gets to operating temp and I cut if off, then it takes a while to fire. It will turn over just fine, but will not start. When it does start, a lot of black smoke comes out. I am guessing that the ignition control module might be the cause? I have also heard it could be the TPS?
Second, I am having trouble at times with my speedo, and shifting of the E40D trans. I can be driving down the road and the speedo ONLY on the instrument cluster stops working. When it does, then the tranny shifts very hard. I have read where the culprit could be the PSOM in the cluster. Is this valid? Other times, the tranny will shift hard, but the speedo is working...have read that the speed sensor can effect that.
I have planned replacing the speed sensor...when getting the part at the parts store, they gave me a different looking sensor. Their computer shows there are two sensors on my truck, but I can only find the one that is on the rear end diff. But their computer says that is ABS sensor. But I have read that that sensor can do both speed and ABS functions.
I think I am getting close to getting the truck mechanically sound...just these few hang ups are the last of the problems. I just need some expert advice/experience advice. Any help is greatly appreciated!!
Ben
When cold...the truck starts great! After it gets to operating temp and I cut if off, then it takes a while to fire. It will turn over just fine, but will not start. When it does start, a lot of black smoke comes out. I am guessing that the ignition control module might be the cause? I have also heard it could be the TPS?
Second, I am having trouble at times with my speedo, and shifting of the E40D trans. I can be driving down the road and the speedo ONLY on the instrument cluster stops working. When it does, then the tranny shifts very hard. I have read where the culprit could be the PSOM in the cluster. Is this valid? Other times, the tranny will shift hard, but the speedo is working...have read that the speed sensor can effect that.
I have planned replacing the speed sensor...when getting the part at the parts store, they gave me a different looking sensor. Their computer shows there are two sensors on my truck, but I can only find the one that is on the rear end diff. But their computer says that is ABS sensor. But I have read that that sensor can do both speed and ABS functions.
I think I am getting close to getting the truck mechanically sound...just these few hang ups are the last of the problems. I just need some expert advice/experience advice. Any help is greatly appreciated!!
Ben
Last edited by FoMoCoFan52; Apr 2, 2015 at 07:23 AM. Reason: specify my title to attract folks.
Fleet Owner
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From: Easton,Ks
Having the E4OD means you only have the sensor on the rear end and it does both jobs as a VSS and a ABS sensor.
The sensor very seldom goes bad but it can collect junk on it to mess with it operation.
When the speedometer stops working does the odometer still show the mileage?
/
The sensor very seldom goes bad but it can collect junk on it to mess with it operation.
When the speedometer stops working does the odometer still show the mileage?
/
Fleet Owner
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From: Easton,Ks
The below diagram also applies to the 1994 F-series truck in this thread.
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Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
When cold...the truck starts great! After it gets to operating temp and I cut if off, then it takes a while to fire. It will turn over just fine, but will not start. When it does start, a lot of black smoke comes out. I am guessing that the ignition control module might be the cause? I have also heard it could be the TPS?
Second, I am having trouble at times with my speedo, and shifting of the E40D trans. I can be driving down the road and the speedo ONLY on the instrument cluster stops working. When it does, then the tranny shifts very hard. I have read where the culprit could be the PSOM in the cluster. Is this valid?
I have planned replacing the speed sensor...when getting the part at the parts store, they gave me a different looking sensor. Their computer shows there are two sensors on my truck, but I can only find the one that is on the rear end diff. But their computer says that is ABS sensor. But I have read that that sensor can do both speed and ABS functions.
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From: Holloman AFB, NM
Thanks for all of yalls input. I have replaced the IAT sensor already. When I bought the truck they had a K&N on it, with no factory airbox...the IAT was just out in then engine compartment. Got a factory airbox from the junkyard...got a new IAT sensor, but the problem remains starting it when its warm.
I will get my meter and check out the ABS/VSS sensor and see if it is perhaps bad. I forgot to mention that I did purchase a code reader, and will plan on hooking it up to see what it finds.
More to come....again...thanks for all of yalls input!
Ben
I will get my meter and check out the ABS/VSS sensor and see if it is perhaps bad. I forgot to mention that I did purchase a code reader, and will plan on hooking it up to see what it finds.
More to come....again...thanks for all of yalls input!
Ben
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From: Kentucky
Remove the instrument cluster, look on the back side at the PSOM components. Frequent failure is bad solder joints.
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From: Easton,Ks
If that is the case I would not worry about the VSS (ABS) sensor on the rear end right now.
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From: Mi'kma'ki
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