2000 Durango 4.7L: Gear indicator display weirdness - Dakota Durango Forum
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post #1 of 4 Old 12-03-2010, 06:18 PM Thread Starter
bigh29
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2000 Durango 4.7L: Gear indicator display weirdness

I have a 2000 Dodge Durango SLT, 4WD, 4.7L engine. I just finished repairs for the classic power steering switch oxygen sensor nightmare problem: p0171, black exhaust, horrible mileage, etc.

After the repair, my gear indicator, or shift indicator, on the dash is acting weird. When I am in park or neutral, all gears are lit. Drive and reverse illuminate correctly. L2 usually works, but occasionally shows up as Drive. L1 usually shows as L2. But when I last parked the truck, L1 lit up correctly.

I feel like I probably did something during my repairs to cause this. Maybe I tugged something a little too hard, or jarred a connector loose. Can you point me in the direction of where I should look?

I should add, the durango starts fine, runs fine, and the transmission seems to shift fine. This appears to be a display problem.
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post #2 of 4 Old 12-04-2010, 02:15 AM
l1tech
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Usually when all the gears are lit up on the display it means that there is a communication issue with the tcm. Try unplugging the connector at the trans range sensor and see if there is any tranny fluid in it.

There should be a code stored in the tcm.

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post #3 of 4 Old 12-04-2010, 04:23 AM
t vago
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Quote:
Originally Posted by bigh29 View Post
I should add, the durango starts fine, runs fine, and the transmission seems to shift fine. This appears to be a display problem.
It sounds to me like you might have yanked the gearshift cable out of adjustment, when you performed your O2 sensor repairs. Re-adjust your cable as follows:

(1) Shift transmission into Park.
(2) Release cable adjuster lock (underneath the power brake booster) to unlock cable.
(3) Raise vehicle.
(4) Slide cable eyelet off transmission shift lever.
(5) Verify transmission shift lever is in Park detent by moving lever fully rearward. Last rearward detent is Park position.
(6) Verify positive engagement of transmission park lock by attempting to rotate driveshaft. Shaft will not rotate when park lock is engaged.
(7) Slide cable eyelet onto transmission shift lever.
(8) Lower vehicle and check engine starting. Engine should start only in Park and Neutral. Do not shift into Neutral, or you'll have to do this again.
(9) Lock shift cable by pressing cable adjuster clamp down until it snaps into place.


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post #4 of 4 Old 12-04-2010, 04:43 AM Thread Starter
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I managed to fix the problem. The issue was my own stupid mistake.

I fixed the o2 sensor nightmare problem by running a new wires for the sensor signal and sensor ground from the sensor to the big wiring harness by the PCM. I found what I thought was the old signal wire, snipped it, and soldered the end from the PCM to my new signal wire.

Unfortunately, I snipped the wrong light green/red wire. There are two in the harness: one for the oxygen sensor signal, and one for something related to the transmission. When I fixed my mistake everything worked fine again.

PS: In addition to the shift indicator problems I had, the check engine light came on exactly after 4 minutes of running. The error code was P0132. In my case it was caused by the O2 sensor wire being completely open at the sensor (which was my intention). I also had a P0135 once, but only got that one time.

Thanks for the advice. I'm happy this turned out to be the problem. Re-soldering at the harness under the hood is a lot easier than debugging tranny problems from the floor!

H
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