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Showing content with the highest reputation on 04/29/18 in all areas

  1. Hi. Thanks for replies. I've had some success to early to say nailed it. Let me explain. Auto Electrician squeezed me in for quick look see yesterday. His computer checked for faults, no gearbox or ecu faults. His computer was able to give live data on Transmission range sensor showing us changing gears and what each solenoid was doing. All checked fine with Chrysler service manual charts. Also showed clutch volume index or CVI for each solenoid. All within correct parameters. L/R cvi 75 2nd/4th cvi 20 O.D cvi 68 Low gear cvi 35 All of this with car on and in reverse with fault present. The only bad thing we notice was transmission temperature sensor/TTS said -20C 1.8V . Outside temp on day was 12C so obviously wrong. This sensor is built into transmission range sensor, got pull gearbox apart to change and not readily available. These sensors work on very small changes in voltage which can also occur with bad connection/corroded terminals or bad ground. I've unplugged every plug sprayed electric contact cleaner, cleaned up and Replugged. I also removed TCM from under passenger wheel arch. Opened it up. It's computer pci board in clear jelly. Jellies still crystal clear no sign of green corrosion or blackened short so think its fine. Didn't touch anything just closed it back up. Mine has Mopar remanufactured sticker on it. P/N R4727535AF. What I did do is turn it over and file mounting area that touches car body as this Tcm is ground on case. Been aluminium body another corrosion bad contact area for ground. I'm starting to think most problems on these voyagers are bad connections and bad grounds/negative. I also ran wire from negative battery to back of this Tcm case traped by mounting bolt. Finally found the TCM relay! On 2.8crd 2007 if you open bonnet in front of fuse box and ecu above radiator you'll see 5 or so black box's mounted on front beam. First three from left are radiator fans relays then TCM relay and far right is lighter grey is glow plug relay. I found TCM relay abit green corroded, cleaned and swapped with one rad fans. Reassemble car tes t drive time. We'll if you've read all this let me give you good news, car seems nearly right. Gear shifts are abit abrupt not as smooth as before but I'm thinking gearbox might need to relearn. Side note. I preformed an autopsy on old solenoid pack. Check with ohm meter coils all showed continuity so they where fine, 3 x sensors showed 250ohm each if remember right which seemed right. I then pulled 8 x tiny filter out. Each was spotless clean and mesh was white. Atf4 oil that came out rose light pink. I then un screwed and split unit. Didn't find any debri,back of coils was slightly grey. My verdict. Gearbox hasn't got blockage from debri in hydraulics. Don't think the old solenoid pack was bad. Don't regret spending £102 on brand spanking new one. Might still have to bite bullet and drop pan to check filter. Changed filter and 4l mopar atf+4 at 116k it's on 122k now. From records last changed by chrysler dealer 88k. Records also show Recon gearbox fitted 66k with new solenoid pack.
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