MAP Sensor

Ok, saturday I start the car up for the first time in about 2 weeks. It idles really rough and is rough when i rev it up a bit. SES light then comes on, code 33 MAP sensor voltage too high. I check the voltage for the MAP sensor according to the instructions in the manual (ignition on/engine off) and it reads within acceptable parimeters. We checked for vaccum leaks and found none. The car ran perfectly fine 2 weeks ago, I changed nothing. Any advice on where to go from here?

1991 RS BTW

wow, no support at all.

It only takes a very small vacuum leak in the hose going to the MAP sensor to throw it off. I would start by replacing the vacuum lines associated with the sensor. After that...new sensor. They cost about $35-$40.

Morley, I appreciate your resonse, thank you.

NP. Try this site for further MAP troubleshooting http://www.automedia.com/Sensor/Troubleshooting/Manifold/Absolute/Pressure/ccr20011001mp/1

Also, the EGR and its vacuum lines can affect the MAP sensor.

thx again. I got a few good suggestions on TGO too. I removed egr and had it programmed out as well tho.