1996 Chrysler Cirrus Lx, 2.5L V6, Automatic, 58K miles; OBD-I
I finally got time to trouble shoot this problem:
stumbles and stalls after cold start; intermittently stalls when coming to a
rarely sets a code; a couple of times it set one or more of the following
codes: 12, 13, 22, and 44
So far I tested for bad sensor ground by disconnecting the MAP connector and
continuity testing pin 2 (BLK / LT BLU) and ground and wiggle test various
parts of wiring harness: no effect. Ground seemed good.
I would like to try disconnecting the TTC solenoid, but can't locate it. Is
there one in the "JA" body style?
Glen, maxpower: how should I precede from here?
TIA (and for helping me before).
look at the lock up torque convertor solenoid. If you unplug it you can see
if the problem goes away. Hope this helps.
Without having a scan tool it is going to be hard to say what it is. When a
fault code is set you need to see what the sensor values are. Plus it would
help to see if all the codes were set at the same time or at different
start/run times.The scan tool would give that info about when each code was
set. If they all set at the same time, normally you would look for an
electrical problem. The trans solenoid pack mounted on the trans just in
front of the radiator fan is what you are referring too I believe, but I
wouldn't mess with that.
Sorry not much help.
You have been more help than you know. I am almost certain at his point that it
is a sensor ground slice somewhere in the wiring harness. The codes that
appeared together were: 13, 14, 22, and 44. Since squeezing the harness in
several places trying to uncover the problem, I somehow fixed it. I just drove
all over town trying to get the problem to resurface. and it didn't.
If the problem doesn't come back by Friday (2 more days of stop/go driving) I
might have to proceed with re-wiring the sensor grounds directly from the PCM
to the (12,14,22,44) sensor devices.
I wish I know just exactly where that ground splice was in the harness. I would
cut it open and inspect it.
I would like to have an OBD I scanner. Can you recommend one?
Pay close attention to the bundle of wires that are at the throttle body,
just where they come off the throttle position sensor and go under the
intake. Engine coolant temp sensor and map sensor share the same ground at
pin 43 connector 1.Also the trans control module and battery temp sensor
share the same ground in pin 43 connector 1 along with the downstream 02
sensor and vehicle speed sensor. You may just be having a bad connection at
the PCM or possibly a bad PCM. Take a good look at the pin in the connector
1 ( pin 43) even if you have to take the connector apart. good luck.....
I'm headed for the hot tub!!!
Ok. wires from TPS to break out of main harness look good. So do ECT to break
out of harness. BUT...
I took apart one PCM connector (housing pins 41-80) and tested the tightness of
the cable ends using a male pin from a DB9 connector (used in PC's) and pin 43
was kind of sloppy, BUT pin 46 (fused B+) was really bad with no detectable
grab on the male test pin.
(I believe that the DB9 male pin is very close in diameter if not the same as
the PCM male pins. But I can't be certain).
I have to tighten up the female cable ends so that have good contact. Is there
a trick to do this?
here are some pictures:
I cleaned the female pins on the PCM connector, then added a small amount of
dielectric grease to each one of the male pins. Put it back together and
plugged in the PCM. No other changes were made anywhere under the hood.
1. Start the car, starts right up. idles good (around 750 RPMS). Put it in gear
for the first time, instant stall. Restart it, starts right back up. Put it in
gear and drive off. no other problems or codes.
2. Drove around all day, no problems. Stop car for a few hours. (today was cold
and damp, 45 degrees). Start cold car and #1. above repeats.
What next? check the IAC motor?
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.