I just dropped the motor in my '99 Sunfire GT 2.4L Auto, 113k miles engine 140k miles trans, I have never driven it before this. It runs great cold, and then when it gets warm it idles lower and lower(down to about 300 RPMs) and after driving about 15 miles I pull into a parking lot and it stalls. I had the code scanned and it is a MAP sensor, but where is it(and WHY does this not seem like a typical MAP sensor malfunction)? Also, when I have the air filter tube unplugged but the sensor on the tube plugged in it runs better at idle, although I have not driven it like this. The ETS OFF light is also on and it shifts quite firmly, but not slippy or grindy. Everything else seems OK, and it takes off when I mat the pedal even when it tries to stall. I have seen this set of problems occur frequently on the 2.4L/Auto cars, but nobody has an answer. Any help appreciated!
-95 CAVfire SE Sedan 2.2L *Retired*
-99 Sunfire GT 2.4L
-85 Dodge Shelby Turbo TII Roller Cam Build *in progress*
P.S. I have been thinking about doing a cone-filter on this, will this require an ECU reset?
-95 CAVfire SE Sedan 2.2L *Retired*
-99 Sunfire GT 2.4L
-85 Dodge Shelby Turbo TII Roller Cam Build *in progress*
The map sensor is held on by a bolt on the throttle body via a small bracket. It has a short vacuum line that goes to the intake manifold.
"Straight roads are for fast cars, turns are for fast drivers"-Colin McRae
I found it, thanks. I guess I was too dumb to check the other vacuum tube on the intake manifold, it got tucked behind the rad support. And it wasn't a bad MAP sensor like they told me at Autozone, there was an actual vacuum leak.
-95 CAVfire SE Sedan 2.2L *Retired*
-99 Sunfire GT 2.4L
-85 Dodge Shelby Turbo TII Roller Cam Build *in progress*
