[notes928]

Hi All,

Having studied every Porsche forum and having suffered endless failures to find the problem i'm at my wits end with my 87 944 S. Symptoms as follows:

- Extremely rough idle or wont idle most of the time, often stalls as soon as the car is started unless accelerator is applied
- Can be coaxed to run and drive if the revs are kept up. At high revs it pulls strongly at times but sometimes its impossible to get it into 3,000 plus RPM without stalling out first
- Any load like going up a small hill will cause it to sputter and it will backfire into the intake or even afterfire into the exhaust
- Switching ignition off and restarting the car seems to reset things a bit and the car will run again for a few minutes, albeit poorly and with an extremely rough idle

Done so far:

- Compression tested OK with all cylinders between 180 to 185 psi warm
- Replaced plugs and leads
- Replaced TPS
- Replaced engine Temp sensor
- Injectors cleaned and flow tested
- New fuel pressure regulator
- Checked vacuum lines, all appear ok
- New dipstick o-rings
- Replaced throttle body O-rings. Appears to be no more vacuum leaks
- Recently new\reconditioned AFM installed by previous owner
- Recently new\reconditioned DME installed by the previous owner

Any thoughts or tips?

Thanks!