My 2005 Chrysler Town & Country is having problems with MAP, TPS correlation. I have replaced both but still have code P0129, P2074 come up. I know one reads that it could be caused by a vacuum leak. I have used starting fluid to find the leak with no success. The van will run but after getting warmed up, it will start to lose power when taking off. I have to adjust my pressure on the gas pedal before it catches on. I don't know where or if there could be a leak...could it be the PCV valve (getting stuck open or something)? I know it's not the PCV hose because I replaced it because of a crack. I haven't changed the PCV since I purchased it in 2009.

Your help is appreciated.

Barkwood

 

get a volt meter and meter al 3 wires at the amp and tps tel me what the numbers are with the key on

 

Thank you for your response. I ended up taking it to the Chrysler Dealership that couldn't find the problem. They said I must have a short to ground somewhere after keeping my car for 3 days...and charging for additional diagnostics. They said the hand tool wasn't picking up communication. They supposedly went through half of the modules and didn't find the problem. Sorry, got long winded...but another auto repair shop, with the same information I gave Chysler, found the problem within a day and fixed it for less than what Chrysler charged. At any rate, the problem that my signal wire to my map had a short/burned/frayed. They repaired it. Problem Solved.

Once again, thanks.

Barkwood