2002 F250 7.3 Loses PCM communication in reverse

[dzldoctor]

Have a little weird one here. 2002 f250 with 7.3 will stall in reverse. Not like the converter is dragging it down, like instantly kill when you select reverse. At that time it will lose communication with the PCM. Anyone seen this or an issue like this. Installed new transmission range sensor and no change. Had some oil soaked connector and wires near the sensor cleaned up will read correct in P,N,D,1,2. Bu when revers it kills instantly and looses communication.

 

[Arisley]

Remove the chip and see if the problem goes away.

 

[mandkole]

Does it do it on any shift to reverse, no matter how hot or cold the truck is?

 

[TyCorr]

Have a little weird one here. 2002 f250 with 7.3 will stall in reverse. Not like the converter is dragging it down, like instantly kill when you select reverse. At that time it will lose communication with the PCM. Anyone seen this or an issue like this. Installed new transmission range sensor and no change. Had some oil soaked connector and wires near the sensor cleaned up will read correct in P,N,D,1,2. Bu when revers it kills instantly and looses communication.

Remove the chip and see if the problem goes away.

Is it tuned? Sounds like incorrect pcm strategy was used

 

[lincolnlocker]

transmission range sensor... is that the one on the shift lever on side of transmission. like the neutral safety switch?

live life full throttle

god bless america and the farmer who feeds your fat ass

 

[dzldoctor]

Yes will do it either hot or cold engine. Has edge evolution tuner. Any time hit reverse either from park or driver back to reverse. Will kill the engine instantly. And transmission range sensor could be classified as the neutral safety switch on the side of transmission. Thanks for any insight.

 

[lincolnlocker]

summons mark kovalsky

live life full throttle

god bless america and the farmer who feeds your fat ass

 

[lincolnlocker]

my brothers 02 had a bad neutral safety switch and when you put it in park, it would engage the starter.. lol

live life full throttle

god bless america and the farmer who feeds your fat ass

 

[mandkole]

Perhaps bypass the switch.. it sounds electrical now. TCC issue would do it in drive also.

 

[dzldoctor]

Had a bad fuse panel junction box. Something internal was goofy only had 8 volts on couple of the fuses. Replaced with new panel cured the issue. It had smelled burned inside.