my88Heep

Replaced timing chain & pulleys
Throttle position sensor
plugs, wired, cap & rotor
Oil & filter
fuel filter

Needs a new valve cover gasket

What next should i replace to make the warm engine stop dying on fast stops, turns and any stop lights.
Its getting really old.

Yes: i have read through many many posts here regarding the subject. nothing i have read or any clues have remedied the problem with my beater.

EastBeast

Do the rpms drop or does it just die out quick? Does it start right back up? Is it a pain to start cold?

cruiser54

Did you adjust the new TPS? An unadjusted TPS on a Renix Jeep isn't much, if any, better than a bad one.

Trail Rig 97 XJ

Coolant temp sensor. That's the exact same thing mine was doin when I swapped engines

beat up jeeper

Check the Ballast resistor

my88Heep

Just dies without warning. Engine starts right back up imediately afterwards with no problems.

I didnt see any adjustment on it, just put it back on the way i took old one off making sure the lever was under the other lever on the throttle body so the switch moves as needed. i will go look again.

I will check into this also, it does run a little hotter than my othe vehicles. could be it.

will do this as well.

my88Heep

only happens on corners and de-acceleration & fast stops my daughter says.

cruiser54

Do this before doing anything else.

RENIX TPS ADJUSTMENT
Before attempting to adjust your TPS be sure the throttle body has been recently cleaned.
It's especially important that the edges of the throttle butterfly are free of any carbon build-up.
IMPORTANT NOTE: Using the positive (red) lead of your ohmmeter, probe the B terminal of the flat 3 wire connector
of the TPS . The letters are embossed on the connector itself.
Touch the black lead of your meter to the negative battery post.
If you see more than 1 ohm of resistance some modifications to the sensor ground harness will be
necessary. The harness repair must be performed before proceeding.
I can provide an instruction sheet for that if needed.
MANUAL TRANSMISSION:
RENIX manual transmission equipped XJs have a three-wire TPS mounted on the throttle body.
This manual transmission vehicle TPS provides data input to the ECU. The manual transmission
TPS has three wires in the connector and they're clearly embossed with the letters A,B, and C.
Wire "A" is positive.
Wire "B" is ground.
Key ON, measure voltage from "A" positive to "B" ground by back-probing the connectors..
Note the voltage reading--this is your REFERENCE voltage.
Key ON, back-probe the connector at wires "B" and "C". Measure the voltage. This is your
OUTPUT voltage.
Your OUTPUT voltage needs to be seventeen percent of your REFERENCE voltage. For
example: 4.82 volts X .17=.82 volts. Adjust the TPS until you have achieved this percentage. If
you can't achieve the correct output voltage replace the TPS and start over.
AUTOMATIC TRANSMISSION:
RENIX automatic transmission equipped XJs have a TPS with two connectors. There is a flat three-
wire connector, same as the manual transmission vehicles have, and it is tested the same as the
manual transmission equipped vehicles--FOR ENGINE MANAGEMENT RELATED ISSUES.
However, the automatic TPS also has a square four-wire connector clearly embossed with the letters
A,B,C, and D. It only uses three wires and provides information to the Transmission Control Module.
Key ON, measure voltage between "A" positive and "D" ground. Note the voltage. This is your
REFERENCE voltage.
Back-probe the connector at wires "B" and "D". Measure the voltage. This is your OUTPUT
voltage. Your OUTPUT voltage needs to be eighty-three percent of your REFERENCE voltage.
For example 4.8 volts X .83=3.98 volts. Adjust the TPS until you have achieved this percentage.
If you can't, replace the TPS and start over.
So, if you have an automatic equipped XJ your TPS has two sides--one side feeds the ECU, and
the other side feeds the TCU. If you have TRANSMISSION issues check the four-wire
connector side of the TPS. If you have ENGINE issues check the three-wire connector side of
the TPS.
For those with a MANUAL TRANSMISSION--the TPS for the manual transmission XJs is
stupid expensive. You can substitute the automatic transmission TPS which is reasonably priced.


my88Heep

tired of screwing with it, posted on Seattle craigslist now for what i have into it.

look for 1988 Jeep Laredo 4X4.

just needs a diagnostic scan to find the problem. im not doing it. my daughter got a Mazda and doesnt want the jeep, nor do i.

freegdr

the only thing that pops in my mind is fuel movement in the tank p[ossible fuel pick up tube issue in tank?