Chrysler Repair: 96 minivan engine stalls, vacuum leaks, tcc solenoid

Question
I have a 96 caravan that was sitting for about a year while we did body repairs started driving it again after the body was fixed but it started bucking then loose power for a second then return to normal and do this every couple of minutes and during heavy acceleration drove like this for about a month then it got worse it would loose power slow down drive for a couple of minutes at about 20 km per hour then stall and not start till the next day it had a p0743 code we replaced the tcc solenoid and no more bucking but it now gives the same code and will drive for about 20 minutes loose power and die and cant start it till the next day could you please help

Answer
Hi Garth,
In the absence of any codes related to the engine, I would suggest that you check the egr valve to make sure that its stem is moving freely and that it closes tightly via internal spring action. You will find it an narrow pipe that branches off one of the exhaust manifolds and routes to the area of the throttle body. The stem is located in a flange area between the round vacuum-operated top and the body of the valve in the pipe proper. Move the stem via the slot in its stem using the tip of a screwdriver. Try sprauing some WD-40 on the stem where it enters the valve body to free up the action. Other than that, look for vacuum leaks and keep checking for for codes. Try cleaning out the throat of the throttle body. One of those measures may solve the problem. Let me know which engine you have if you send a follow-up question. Good luck!
Roland
PS Sorry for the delay but I just found your question in the 'pool' to which it had been sent by the other expert, Kevin. Please 'rate' my answer, and where you see the question about 'volunteer of the month' please consider a 'yes' answere if this response has been helpful. Thanks