2004 Chrysler PT Cruiser RPM & air conditioning

  • 6 CYL
  • 20 MILES
I was driving & the AC was blowing normal but car wouldnt get cold. & Then I was driving back home because I saw the check engine light come on. As im pulling out of this place my car was making it so hard for me to press the breaks like it just wanted to keep going & the steering wheel was so hard to turn. So I turned off the car & turned it back on & was able to make it into my neighborhood until it did it again & so I turned
Off the car & turned it back on. The car wasnt smoking or anything but I noticed the rpms kinda jumping. So my stepdad looked at it & we did a engine computer test & the code was P2074 MAP/MAF sensor throttle position. So I went to auto zone told them wjat happened & what they thought & they suggested we replace the TPS sensor & clean the throttle body & thats what we did. Found a vaccume leak & we fixed that. But my cars RPMS are still jumping from 1 to 2 so fast as soon as I turn the car on like it just wants to take off & the gas is burning so quick all of a sudden too. And its very loud too when you turn it on. Please help I dont want to spend $500 to get it checked out by a mechanic not including parts!
Do you
have the same problem?
Saturday, June 27th, 2015 AT 1:40 PM

1 Reply

That code is for the correlation between the map sensor and tps. I'd check the wiring circuits for those two sensors, if three wire connector, ref voltage--ground and signal wire.

Also, check map sensor vacuum.

You can probably use a digital multimeter on the tps signal wire, key on. You don't have to start it, work throttle by hand, see if signal moves up and down, smoothly.

You can probably use a hand operated vacuum pump on the map sensor. Key on, check signal at particular vacuum, see if it adds up.

I haven't looked up all the tech info on your particular vehicle, if I misspoke, somebody will jump in.
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Saturday, June 27th, 2015 AT 2:22 PM

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