Join Date: Feb 2004
Location: Vancouver, BC, Canada
Limp mode, have code, new sensor, still limp - connector pins?
Hi guys, noticed a lot of transmission threads lately - here's my own:
Started with sudden harsh / erratic shifting a couple weeks ago. Got the car scanned and the shop told me it's input speed sensor. Fair enough, got an OEM sensor at the dealer, put it on, and boom, all nice and smooth, for 4 days...
Exact same problem came back. Tried resetting the PCM, but same problem after only 2 days. The second time I got the codes from the shop (besides p0700 & p1684):
P0715 - input speed sensor
P0731 - gear ratio error in 1st
P1790 - fault immediately after a shift
The last one is a bit strange. The other two seems to point to the sensor again, but keep in mind it's brand new, OEM, with clean contact at the connector. Speedo works bang-on so I don't think it's the output sensor.
The shop said the connector(s) could have a pin with bad contact. They say it's common on Chryslers and they will use special pliers to reshape the pins for better contact. Both at the sensor and the big connector at the wiring harness, by the firewall.
Has anyone heard of this? Any other pointers? I've searched this forum for the last 2 weeks with no definite answer. I could throw in another output sensor, but I'd rather not.
FYI, transmission flushed every 40k since day 1, using ATF +4. The solenoid pack was replaced myself just 6000 miles ago (with full flush).
2003 Police Package
2006 C6 Z06 (traitor)
2014 Ram HEMI 8 spd
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