Engine dies when letting off throttle

[Ecomike]

I'd say pretty close to idle. Its been a while since shes under the knife.

So you are crawling in first gear just a little above idle? TC is never locked then.

The TPS and TPS grounds are notorious for going bad on Renix (87-90) Jeeps.

 

[AIbandit]

Well I have a TPS with me from a stroker build if I could test that outside of the engine I could take it down with me if not I'll just spend the buck. I'll check the grounds.

Yeah first gear.

 

[Ecomike]

Well I have a TPS with me from a stroker build if I could test that outside of the engine I could take it down with me if not I'll just spend the buck. I'll check the grounds.

Yeah first gear.

Somewhere in this old thread of mine I posted the test data for a brand Renix TPS, off the engine.

http://www.naxja.org/forum/showthread.php?t=905849&highlight=RenX+files

Here is one of the posts:
http://www.naxja.org/forum/showpost.php?p=243521960&postcount=104

Here is the data on the new TPS, UNmounted:

http://www.naxja.org/forum/showpost.php?p=243533340&postcount=119

I have "New TPS" Test DATA for new, OEM, loose unmounted TPS sensors! party1:

This is for 87-90 Renix TPS with automatic transmission (has 2 pigtail connectors), tested on the 3 pin, ECU side only:

Loose unmounted, Brand New TPS tested on the ECU side itself, disconnected from harness is:

B to C - 2.360k ohms at Idle
A to B - 3.740k ohms at idle
A to C - 6090k ohms at Idle

Loose unmounted, Brand New TPS tested on the ECU side itself, disconnected from harness is:

B to C - 6.130k ohms at WOT
A to B - 3.740k ohms at WOT
A to C - 2.420k ohms at WOT

Do not confuse this with mounted TPS test results!

Also for the TCU side of the TPS, Loose unmounted TPS:

Pin B to D: 6060 ohms (idle) to 2340 ohms (WOT)
Pin A to D: 3770 idle to 3770 Ohms WOT.
Pin A to B: 2340 ohms (idle) to 6160 ohms (WOT)

 

[AIbandit]

perfect thanks!

 

[mattbred]

If the TPS doesn't fix it, try the MAP and tell me if it does

 

[AIbandit]

I'll let you know in october Lol. Not grabbing her till Fall fling Just wanna make sure I have a good TPS to throw on when I get there. If it doesnt work I'll be holding the break and throttle at moab