where are these sensors located and how to change them.

2002 DODGE CARAVAN
209,000 MILES
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FREDJOHNSON
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my 2002 dodge grand caravan doesn't shift properly and jerks when down shifting. I was told it could be the elec., sensors. where are they located and are they hard to change? thank you
Sep 21, 2012 at 5:45 PM
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SATURNTECH9
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Lets start with what codes do you have?
Sep 21, 2012 at 5:51 PM
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FREDJOHNSON
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1698 0442 0455
Sep 21, 2012 at 6:11 PM
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SATURNTECH9
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So is there a P in front of those numbers?
Sep 21, 2012 at 6:32 PM
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RONSON
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I had this same type of problem on my 2000 caravan about 8 years ago. A friend of mine was a transmission mechanic for chrysler for years and had me unplug the sensor on the trans. that he said was for smog related signal and it has ran fine ever since. I want to say if I remember right it was located on the front side of the trans. near the back of the block. IT'S been a while though. If I get a chance to crawl under in the next few days I will send you an update.
Oct 1, 2012 at 6:34 AM
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WRENCHTECH
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Ignore the previous advice as it is nonsense.

Of those 3 codes, only the first one has anything to do with the operation of the vehicle. The second 2 are EVAP emission codes. The P1698 indicates that the PCM is losing communication with the TCM which probably means the TCM is going bad but could be a wiring issue also.
Oct 1, 2012 at 10:14 AM
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SATURNTECH9
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The p0455 could be a stuck open canister purge solenoid.I agree with wrenchtech ronsons reply doesnt make sense.
Oct 1, 2012 at 5:14 PM
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