First 200 miles on rebuilt 3.2

[jaykay]

Did you work out the MAF arrangement yet?

[onaFLYer]

Originally Posted by jaykay

Did you work out the MAF arrangement yet?

It keeps setting code P0102, MAF. So I bought a new Bosch unit. Same problem. Been looking for vacuum leaks, borrowed a smoke machine and found a bad hose. It's the vent line from the tank, connects to AOS hose then TB. It has been rubbing on the oil cooler and TB too. I ordered both hose's.

I re-installed my original MAF, runs fine, still sets code. Maybe my connector is bad? It baffles me how something like this happens sitting in the garage with no engine for 3 months...

[jaykay]

What year is your car? If you have a 2000 you need to ensure that you have the right sensor installed. There were updates to the sensor which require updates the DME from Porsche. You may have mismatch between sensor and software

[onaFLYer]

Originally Posted by jaykay

What year is your car? If you have a 2000 you need to ensure that you have the right sensor installed. There were updates to the sensor which require updates the DME from Porsche. You may have mismatch between sensor and software

it's a 2002, and the stamped part number matched. Even had the updated version, 125 01 on the end. Still waiting for my hoses to show up.....

Originally it wouldn't run at all with my MAF plugged in, well it wouldn't accept any throttle. So I unplugged it and it ran OK, which led me to believe the sensor was bad. Apparently it just needed some time to cycle through, since everything was unplugged, batt, DME, all sensors. Now it runs fine when warm, but the vacuum leak is keeping the sec evap from cycling and it won't pass smog. Even w/o a cel. It needs to go through the whole cycle starting cold, at least according to Bentleys version of the "drive cycle".

we'll see.

[jaykay]

Man that is annoying....assuming that your DME version and MAF sensor match....sure does sound like a vacum leak...plus your DME is going crazy trying to learn everything again after having no power to maintain settings.

Hopefully you have found the leak but ahhhh I think the leak has to be down stream of the MAF, in the intake tract to throw out the MAF code

Time to break out the smoke machine and go over every section and joint down stream......hope you get it licked

[onaFLYer]

Originally Posted by jaykay

Man that is annoying....assuming that your DME version and MAF sensor match....sure does sound like a vacum leak...plus your DME is going crazy trying to learn everything again after having no power to maintain settings.

Hopefully you have found the leak but ahhhh I think the leak has to be down stream of the MAF, in the intake tract to throw out the MAF code

Time to break out the smoke machine and go over every section and joint down stream......hope you get it licked

Update: I replaced the two hose that connect to TB, one from vent line, the other AOS hose. Both showed wear. It idles better when warm, but still throws the MAF code on a Snap-on scanner.

Just purchased a Durametric kit, hope to go for a drive to get some real data this weekend, if it stops snowing. Not much free time lately.
Just over 400 miles on it. Don't want to keep driving too much with evap system inop, might hurt the cats?

[jaykay]

Originally Posted by onaFLYer

Update: I replaced the two hose that connect to TB, one from vent line, the other AOS hose. Both showed wear. It idles better when warm, but still throws the MAF code on a Snap-on scanner.

Just purchased a Durametric kit, hope to go for a drive to get some real data this weekend, if it stops snowing. Not much free time lately.
Just over 400 miles on it. Don't want to keep driving too much with evap system inop, might hurt the cats?

Assuming all your vacum leaks have been addressed..

Do you think it is the larger Cayman MAF housing causing the code? Are you running a special tune or the standard 3.2 one

You could try adapting a smaller (3" dia) but similar Bosh MAF housing. I can find the PNs if you like. You may have to cut or it may press in!! I will be facing the same issues if I use the 987 box.....Have yet to find one

Nice car by the way!