Jameson250s

first off, i did search and found none with my symptoms.

Vehicle= 98' Cherokee classic 4.0L with automatic trans

1. stalls in reverse under load in any condition cold or hot
2. i can hold gas and brake in reverse and it revs up and down and bucks
3. i can barely push the gas in reverse but it will drive in reverse
4. any sort of incline, im pretty much F'd unless i can drive forward.

pleaseeee

Jameson250s

Nothing?

MtnHermit

Have you checked the NSS, Neutral Safety Switch? It's position dependent and close to park for start.

Radi

Everything works OK in drive or neutral, no bucking or stalling?

I'd start with:
1) Unplug NSS after engine is started to see if problem still happens. Not likely a NSS problem, but who knows.
2) Check CPS, O2 sensors and Trans wiring for any sign of damaged wiring, abraded insulation, etc that might be shorting when you hit reverse.

freegdr

Get checked for codes .....

Willys55

Just had one in the shop last month, it was internal trans failure, the low reverse clutch band and planetary where damaged causing it to bind in reverse....the symptoms where very much like yours

cruiser54

I've also heard of loose engine to trans bolts causing the same symptom. Worth looking at.

Jameson250s

No codes at all and checked wiring already
Where is the nss at?

Nicks90xj

Is your trans fluid clean? i also had a issue on a ford like yours and it was a cloged egr.

But i belive your reverse sunshell is bad in the trans.

cruiser54

Passenger side of the trans.

cruiser54

Sunshells in the trans? WTH is a sunshell and how did it get in there? Pick it up four wheeling on the beach?

Nicks90xj

haha i know right. the sun shell drives the planetary gears.

Jameson250s

fluid looks clean, ill try undoing the NSS and go from there.