Mike (71.246.157.249) - Wed Feb 18 10:40:05 2009

My Neon is stuck in 1st gear. Code P0700. transmission control. No other transmission codes of which there are several. Thinking of changing the input speed sensor (even though it didnt show code for it)before I change the solenoid module. Any other sugestions. Fluid and pan are clean.

Reply #1 Alex (203.58.179.34) - Thu Mar 19 23:13:08 2009

Hi

Just read your issue on the Neon trans error P0700....I have a 2001 Neon Se and I live in Australia that had the same error code...

I would start the car and put it in drive and the car would hope a bit...and when i drove off the car would not change into second...I would turn the car on off and this would fix the issue...but it was getting worse..Iit was happening every day almost...so I took it in a week ago....

Initially I thought Hell whats wrong...when they plugged the computer in to check all the codes under the P0700, a number of other error codes came up...it ended up being the Module itself... the computer was faulty....they replaced the computer and no more error codes came up.....2nd hand computer a new one was 2K they are insane a second was 500...

yes there are potential solenoid issues kick down cable issues etc..etc..but hey thats what the mechanic said...everything else was fine....

I pick my car up in a couple of days....

regards

Alex

Reply #2 Gary (24.57.15.231) - Sat Apr 4 22:30:24 2009

the p0700 dtc in the pcm is just to refer you to check for dtc's in the tcm ( transmission control module ), since it is not emissions related you will have to see if your diagnostic tool can access the tcm. if not you'll likely have to go to a dealer. when the tcm registers a failure it goes into limp- in mode, if your speedo still functions it is not the output speed sensor, without knowing the dtc the input sensor is just a guess, it is a cheap sensor and fairly common to fail.

Reply #3 jkg20012003@yahoo.com (66.57.187.196) - Sat May 9 23:43:24 2009

p700 code is automatic transmission fault detected most likely could be your input speed sensor or your output speed sensor or your tcm which is your transmission control module or your solenoid pack located on your trans also it could be clogged up and not letting it shift you also have an vavle idle air control also located on your trottle body if it goes bad or build up on it it will cause shifting problems also had problems with the tcm relay and the wires under the tcm relay come lose from the solider....

Reply #4 jkg20012003@yahoo.com (66.57.187.196) - Sat May 9 23:46:19 2009

the problem is called limp mode that yall are having ..do a google seach on this problem search limp mode

Reply #5 wil (67.76.100.156) - Tue Jun 2 16:48:02 2009

i have a simular prob. my 2002 neon just went into limp mode. i took it to my local mech. it showed codes 0700 and 0755. showing that the shift solenoid B malfunction. i disconected the battery and pulled the fuse and cleaned both of them. the car ran fine for about 10 miles then went back into limp mode. any suggestions?

Reply #6 wil (67.76.100.156) - Tue Jun 2 16:53:42 2009

I have a simular prob.. My 2002 doge neon just went into limp mode.. I took it to my local mech.. It showed codes 0700 and 0755.. showing that the shift solenoid B malfunctioned.. I disconnected the battery and pulled the fuse and cleaned both of them.. The car ran fine for about 10 miles then went back into limp mode.. Any suggestions what to check?

Reply #7 johnny davis (208.54.94.106) - Thu Jul 23 20:45:25 2009

I wanted to no were is tcm an selinoid moldule located at.

Reply #8 Tony (76.30.135.131) - Wed Aug 5 01:23:11 2009

Guys... dont waste your money on anything, same exact thing happened on my 2002 Dodge Neon. This was a VERY simple problem, the "Transmission Shift Solenoid" goes bad and simply needs replacement. Anyone with basic tools can do it, just need to move the airbox out of the way to get to it. Here's the link to what you guys need on Ebay. This is somewhat of a chronic problem so do not purchase a used one. I beleive its double the price at a dealer, I got mine almost two years ago on ebay and sucker is still running strong. This will fix the problem of transmission not shifting higher then the first gear (possibly from second to third aswell).

Tony

Reply #9 craig kozak (96.12.12.127) - Mon Aug 24 14:15:07 2009

Ok guys here's the problem, my wife has a 99 neon. There's a kick down cable running off the throttle body. The problem is the battery corrodes and drips down on top the transmission. What happens is that it gums up the tranny pump and you can feel a hard spot in the throttle pedal. When you smash it down it sticks and holds the transmission in kick down mode. Notice if it sticking and you take it down the road and hold it right to the floor it does actually shift around redline. Thats because your tranny is saying lets go babe i'm in passing gear. The fix, is to pull your battery box and stuff off and take off the surroundings at the trans linkage and take it apart. Take a small torch and heat the outter housing but don't melt the o-ring inside there! Keep spraying pb blaster into the hole that the shaft rides in and wiggle the shaft left and right. Don't pull up more than 1/16 of an inch! Other wise you will have the headache with getting it down and meshing again. Her car is doing this a 2nd time, so, I'm going to put a piece of tin or something over the top, currently she has a newer napa battery with the fill caps, the best thing to do is replace it with a maintence free battery.

Well there's the fix! I see alot of forums and info, but nobody can help a person, they just suggest which is ok, but there seems to be alot of suggestions and still no solutions. Well here's the solutions to those who have problems with it upshifting.

peace

craig

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