Faultless rough runnig vanishes with MAF disconnection.
03-23-2019, 03:21 PM
#1
7th Gear
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Faultless rough runnig vanishes with MAF disconnection.
I'm new here, have recently acquired a 2000 986, am fairly handy with a set of spanners, and have a problem.
I’ve Googled until insane and asked on FB pages but got no sensible info. I would be really grateful if someone here could give me some pointers. Here are symptoms -
One day last week the car did 150 faultless miles. Next morning we start and running rough at idle, and won’t rev past 2,000rpm.
No fault codes or lights.
Disconnected MAP sensor and runs fine.
Bought and fitted identical Bosch sensor. SAME PROBLEM!
(Incidentally while waiting for new sensor I changed AOS, cleaned TB & tubes, and checked all hose connections)
Today left MAF disconnected and did 120 miles below 4,000rpm - all fine and still no lights or codes.
Any ideas or comments?
TIA
I’ve Googled until insane and asked on FB pages but got no sensible info. I would be really grateful if someone here could give me some pointers. Here are symptoms -
One day last week the car did 150 faultless miles. Next morning we start and running rough at idle, and won’t rev past 2,000rpm.
No fault codes or lights.
Disconnected MAP sensor and runs fine.
Bought and fitted identical Bosch sensor. SAME PROBLEM!
(Incidentally while waiting for new sensor I changed AOS, cleaned TB & tubes, and checked all hose connections)
Today left MAF disconnected and did 120 miles below 4,000rpm - all fine and still no lights or codes.
Any ideas or comments?
TIA
03-28-2019, 02:18 AM
#4
Three Wheelin'
Stealing this thread to make it on topic 
My MAF is faulty and at a specialist to diagnose and hopefully fix it. Any leads on an OEM replacement if it needs to be replaced? Sonnen is nearly $700 USD for genuine Porsche.
TIA!
My MAF is faulty and at a specialist to diagnose and hopefully fix it. Any leads on an OEM replacement if it needs to be replaced? Sonnen is nearly $700 USD for genuine Porsche.TIA!
Last edited by J1NX3D; 03-28-2019 at 03:15 AM.
03-29-2019, 11:55 AM
#5
Rennlist Member
At least the MAP sensor is still available. So many other parts for our cars are not! Perhaps you should see it these folks can help you?
http://www.injectionlabs.com/massmeter.html
Otherwise I understand that MAP's from other cars will work, just they have a different "screen" on the front.
This may help as well:
https://rennlist.com/forums/968-foru...ow-sensor.html
Good luck,
Yogii
AKA 968 Novice
http://www.injectionlabs.com/massmeter.html
Otherwise I understand that MAP's from other cars will work, just they have a different "screen" on the front.
This may help as well:
https://rennlist.com/forums/968-foru...ow-sensor.html
Good luck,
Yogii
AKA 968 Novice