Truck running like crap

[702_MJ]

trucks running like crap. holds gears till like 4000rpms, it won't stay alive it barely idles. gotta double foot it to drive and i can't get on the free way. I recently tried to clean the engine at the car wash, not a good idea. then i did a 2nd gear drop in my aw4. so the only thing i can think of is i got a relay wet or maybe the trans is finaly going. but that wouldnt make it idle bad. it throws a code 24 on the check engine light. Any ideas? please help....moving to hawaii dec 16 need to get this done.

[HOrnbrod]

TPS.

[702_MJ]

i disconnected it, disconnected the battery to see if it would reset. Nothing. What would you do?

[JeepcoMJ]

replace the TPS

 

the one you have is probably faulty.

 

I'm sure Eagle can tell you how to test the TPS...I don't know how.

[HOrnbrod]

So what do you have? The HO TPS? (92 HO in 86).

[702_MJ]

would that make the transmission hold gears like that. i get to 4grand in first and then it will shift then about 4grand again to 3rd its like it can't decide.

[Eagle]

That could do it.

 

The TPS doesn't like to get wet. I'm not sure what inputs the AW4 uses when deciding when to shift, but knowing that the TPS for the AW4 has extra contacts that are not used with the 5-speeds, I'm pretty certain that TPS input is used somehow. Unfortunately, if you'll pardon an unfortunate pun, I suspect that you "hosed" your TPS.

[702_MJ]

see i thought i did, it was a dumb idea in the first place. So if it is where do we start? how do i change it out? Clean it? or whatever?

[HOrnbrod]

The TPS sends throttle position output signals to the ECU, then is outputed to the TCM in the HOs which determines shifting RPM points in the AW4. So again, do you have an HO TPS in your rig w. the 92 HO engine? There is an easy TPS test procedure using a multimeter, not always conclusive, but I think you should just replace it. I think you "hosed" it too. :D

[carnuck]

If you pick up a can of electric contact cleaner (electronics stores or NAPA), you might have a 50% or so chance of saving the old TPS.

[702_MJ]

LOL u guys like that word hosed, i should just replace it. But you know how hard is it? Hesco sells it for $60

[702_MJ]

i will try or am i just better off trying to replace it? do they sell it anywhere else napa, autozone, any one knows? I guess i will wing it

[project88mj]

hey in a side note whats up with the red mj

 

got any videos of burnouts, streetracing, track runs, dyno runs?

[Wildman]

Here's a link to checking the TPS- Lunghd

 

And Rockauto.com has the TPS listed for $22-$38 / your choice-Rockauto.com

[702_MJ]

Well it was the TPS, good call guys! But now either the battery is finaly dead or the alternator i got from autozone finaly took a dump. One problem to another this trip to cali is gonna be a blast........

 

As for the red comanche, i aint got no vids or dyno runs. It wasnt no 4.0L though, it had a chrysler small block i believe. ran 13.5 in the 1/4. I never got to talk to the guy, i thought i was gonna be the only comanche at Mopars At The Strip. and beat a 66' dodge truck with a 354 hemi that i helped build.

[carnuck]

Well it was the TPS, good call guys! But now either the battery is finaly dead or the alternator i got from autozone finaly took a dump. One problem to another this trip to cali is gonna be a blast........

 

As for the red comanche, i aint got no vids or dyno runs. It wasnt no 4.0L though, it had a chrysler small block i believe. ran 13.5 in the 1/4. I never got to talk to the guy, i thought i was gonna be the only comanche at Mopars At The Strip. and beat a 66' dodge truck with a 354 hemi that i helped build.

 

 

IIRC, that red MJ is running an AMC 304 with 401 crank (331 cu inches)

[702_MJ]

so u know the guy or is it yours? at least i was close chrysler small block, amc small block.... still mopar.