E40D hard shifting
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Cross-Country
Joined: Jan 2008
Posts: 73
Likes: 7
E40D hard shifting
I haven't posted for awhile. I have a 94 F150 that I swapped from a 302/4rw70 to a 351/E40D. I did get the cab corners and wheel well arch rust repaired and painted the bottom 2/3 of the pickup. Much better and plenty good for a driver pickup.I am still having the hard shifting issue. It shows the 452 code for speed sensor. I had 2 more pickups here and swapped both of those in and it still shifts real hard at times. I know I should install a new one and that is next on the list. I see that some have a speed sensor on the transmission but it is the 4rw70. Do the E40Ds have that as well and where is it if so? Fluid and filter are new. I have checked the adjustment on the shift position switch. I have read tons of posts around for this problem and nobody seems to have a real answer as to why. I love the truck but that hard shifting is really annoying.
Mountain Pass
Joined: Mar 2020
Posts: 160
Likes: 31
I haven't posted for awhile. I have a 94 F150 that I swapped from a 302/4rw70 to a 351/E40D. I did get the cab corners and wheel well arch rust repaired and painted the bottom 2/3 of the pickup. Much better and plenty good for a driver pickup.I am still having the hard shifting issue. It shows the 452 code for speed sensor. I had 2 more pickups here and swapped both of those in and it still shifts real hard at times. I know I should install a new one and that is next on the list. I see that some have a speed sensor on the transmission but it is the 4rw70. Do the E40Ds have that as well and where is it if so? Fluid and filter are new. I have checked the adjustment on the shift position switch. I have read tons of posts around for this problem and nobody seems to have a real answer as to why. I love the truck but that hard shifting is really annoying.
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Cross-Country
Joined: Jan 2008
Posts: 73
Likes: 7
I did the test with jumping the plug under the hood and counting the check engine light flashes. The computer and wiring harness is out of another 94 but I used the 95 transmission and installed the solenoid pack from the 94 into the 95 trans.
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Cross-Country
Joined: Jan 2008
Posts: 73
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My wife works at an auto parts store and they show 2 different speed sensors on the transmission. SC37 and SC210. They are Standard Motor products. If my pickup has these plus the 1 on the rear end, how do I know which one it is if I show the 452 code for bad sensor? I looked on Oreilly's site and the SC210 fits 94 and 95. The SC37 fits 94, not 95. My truck is a 94, transmission is a 95 and that is probably the sensor in there. Problem????
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,731
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From: SE Florida
E4ODs do NOT have ANY speed sensors. Period.
The 452 code only refers to the speed sensor on the rear differential. The code does not mean replace the sensor, the problem could be the wiring between the sensor and the PSOM on the back of the instrument cluster. It could also mean a bad PSOM.
The 452 code only refers to the speed sensor on the rear differential. The code does not mean replace the sensor, the problem could be the wiring between the sensor and the PSOM on the back of the instrument cluster. It could also mean a bad PSOM.
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