mrroboto89

Hi. I have a 97 escort with a manual transmission. Today while I was driving home and was stopped the idle rpms were moving up and down from about 500 to 1500. It did it at a couple of other stops and to keep the car from dying I had to keep my foot on the gas. I just had an oil change a few days ago and the air filter was replaced. Im really not sure what to do about it. Any help?

 

rescue76

Hate to bring up a dead post. But I recently experienced an idle problem with my 01 zx2.
It started the dreaded Low Idle to fast idle.
I started searching the engine over for loose wires, checking sensors, Plugs..etc.

Long story short. I ended up replacing all the vacuum lines on the back of the plenum. Still didn't help.....There is one vacuum line that is hidden. Under the throttle body. it runs from the beside the water pump to the bottom of the intake. There...it had dry rotted.


Just thought I would throw it out there....check your vacuum lines well.

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Sterling_Six

Checking the Vac lines is a possibility, but I would start with the MAS..(Mass Air flow Sensor), and the TPS..(Throttle body Positioning Sensor).

Have you gotten a Engine Lite yet?...if so go to Auto Zone, or Advance Auto, and have the Error Codes Read.