Question about 1999 Plymouth Voyager

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I replced the tranny fluid and filter and the 99 minivan worked for a little bit.Then it down shifted and back to limp mode I went.The code I still get is 0700 40$?What does the money mean and should I replace the tcm?

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I have the same problem. My van didn't want to go in to 3rd. It turns out that the old battery leaked acid all of my wires that support the TCM. I wonder if that is your problem.

Posted on Mar 20, 2009

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You need to scan the tcm for codes. Code p0700 is a code in the ecm that tells you that there are codes in the tcm.

Posted on Mar 14, 2009


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92 ford explorer wont upshift until rpm is up to 4 it makes a whining/whistling sound until it shifts replaced oil filter and oil tranny fluid and filter spark plugs checked timing replaced speed sensor....

Check the automatic transmission fluid level.
Let the engine get to operating temperature, but the car in park, and pull out the LONG dipstick. Clean it off and reinsert it, repeat a few times until it comes out consistently at the same level.
If the fluid is bright red and at the proper level, it is likely something other than the transmission, such as an engine vacuum line.
If the fluid is low, refill it (a little bit at a time) with the correct type of trans fluid, using a funnel and the same filler hole that the dipstick went in to. DO NOT OVERFILL.
If it is brownish color, regardless of level, get it to a mechanic. it may be salvageable with a fluid change, it may not. It will only get worse and cause more damage if you don't take action.

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Could be a shift solenoid gone bad, causing it to go into "limp mode".

Without a transmission technician to verify, it's kinda guesswork, but I've seen this exact problem before. In fact, I've had it happen to my wife's T & C van. If you're willing to gamble around $175, you can put it on yourself, as it's external to the transmission case.

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Transmission going into limp mode. Have changed fluid and filter, went 300 miles and back to limp mode. Had a gas cap that wasn't the correct one so I just bought a new one. getting codes po456, 442,...

Change your input/and output speed sensors, check your fluid level in the tranny, test cam sensor. If problem still occurs then check the tranny solenoid pack and replace as needed. It is important to understand that in MOST cases, the plug in connectors to these sensors are worn and the plastic part of the plugs expand when the engine warms up and then the proper connections are lost. MOST of the time a sensor works fine but either the wire OR the connector itself is not working. Always check these connections first as most of the time this is EXACTLY what your problem may be and your repair is free!

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1993 plymouth voyager

Number one cause of this is bad transmission fluid.
So far, 7 times out of 8, fluid change has fixed a problem exactly like yours.

The A604 transmission uses ATF+3 or ATF+4 NOT trust 'some other ATF + additives' or anything like it, you will end up regretting it.

ATF+3 and ATF+4 are trademarks, so cannot be used without meeting the spec. I've had good luck (and best prices) with Wal-Marts Supertech brand (cheapest ATF+4 I've found)

You'll need 5.5 quarts to do a standard fluid change (doesn't empty out the torque converter). System capacity is 9.5 quarts, but you'll need quite a bit more than that to do a full flush. When you're done, and have refilled the tranny, start the engine, wait 10 or 20 seconds, keep your foot on the brake, put the van in drive for 10 or 20 seconds, back in park, then check the fluid again.

Generally, doing a change, driving another couple hundred miles, and changing it again works very well.

You'll have to drop the entire transmission pan to change the filter, you'll want to do that to check for excessive metal shavings and such anyway. Don't forget to remove the old O-ring from the filter connection, and don't forget to put the new one on. There's no drain plug on the tranny pan, so have a big catchpan handy, and expect to have to do some careful prying to get the old gasket to break loose. (the bolts are 10MM by the way)

The second time you change the fluid, it's simpler to use some aquarium tubing down the Trans fluid fill tube as a siphon. Takes pretty much overnight to empty the pan this way, but easier and safer than dropping the pan, and you actually get a little more old fluid out.

Do the same fill, start, brake/drive, recheck as above.

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