Quote:
Originally posted by PowerHaus944Turbo:
I have coughed up thousands at three Porsche garages for over six months attempting to solve this mystery...
I have a 1987 Porsche 944 Turbo with issues.
All sensors connected properly: the car stutters when accelerating (pushing the gas half-way or more) at mid to upper rpms. It feels as though it is running lean or is starving for gas.
Throttle postion switch disconnected: the car runs almost flawlessly (has fairly rough idle / sometimes stalls / runs rich / not acceptable).
Engine Upgrades: Autothority mass-airflow sensor, K-27 turbo, intercooler, oil cooler.
Motronic Upgrades: Authority DME and KLR chips.
Attempted Fixes: mixture adjustment on airflow sensor, wiring integrity check, replaced throttle position switch...
Known Anomolies: The speed sensor doesn't seem to be putting out spec voltage. (according to one garage)
PLEASE HELP ME!!! - Will
Email: butler.william@broadband.att.com
Phone: 720-280-1561
Fax: 303-766-5032
[This message has been edited by PowerHaus944Turbo (edited 09-26-2000).]
|
You may very well have a dirty MAF if your conversion does not include the burn out circuitry. With full flow, you should see 4.6 Volts and 0.2 Volts at idle. THese are the same voltages as the Flapper.
Try your own VOM and check. ALways check the connections because the MAF is a relatively high impedance device and dirty connections can casue a real problem.