P1117, P1121, Po131, Po151, Po137, Po157 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

root_werks · 01-24-2010, 08:39 PM

Re-seating the DME didn't do anything.

There are a couple DME units for sale, $200-300. I certainly don't mind paying for one, but the dealer asspect worries me a little. How much could they charge for re-coding it to match the car? Yuck.

I'll keep posting findings, or lack of.

Topless · 01-25-2010, 06:16 AM

If your car is running well and no CEL with codes just drive the car to see if they re-appear. The DME is just a computer and like any computer it may go bezerk if water temporarily shorted your O2 sensor wires, but as it dries out it may be fine. Your unplug and reset may be all that was needed. You had several "short to ground" codes so water is a likely source of the problem.

root_werks · 01-25-2010, 04:31 PM

The CEL did come back on after about 10 or so minutes of driving. I'll keep checking and posting updates.

I worry about the water damage, although I haven't found any evidence of it, I know it could be there.

-Dan

root_werks · 02-01-2010, 07:26 AM

On my way into work this morning I noticed the CEL went out for a second, or part of a second, then back on. I've researched a little about bad grounds being issues. I've already cleaned the two back by the DME in the rear trunk, but know there is possible issues that might be coming from chassis to engine/trans. So I'll check those this week. I didn't have time this weekend to do anything to the little guy. I'll keep any updates posted as I can.

I'm still not ruling out a failed DME unit. I know capacitors can leak messing all sorts of things up. I'd rather not get another used DME unit. I sense frustrating times getting the immobilize-er(spelling?) re-coding done. Does anyone know of a place that rebuilds units? I don't mind having my Box out of service while the DME unit is rebuilt.

-Dan

gschotland · 02-01-2010, 04:20 PM

This place advertises in PCNA Panorama magazine:

PorscheDME.com

Ad says they rebuild all DMEs including Boxster. For '97s they repair yours for $675 or sell on exchange for $975. Spendy. Yikes.

Vertex (****************************************.com) offers rebuilt ones for $299-$759, no details listed on their site. Based on my experience with their customer "service" and feedback I've gotten from people in the know about their remanufactured mechanical/electrical parts, I'd try the guys above first. I like to go with specialists for that kind of stuff anyway.

root_werks · 02-01-2010, 06:29 PM

Thanks for the DME tip, I did find the website, yes, pricey, but 5 year warranty. Hopefully it isn't a DME unit.

I am running the CarCode OBD2 software which really isn't good for much of anything other than pulling the codes and clearing them. You can test the O2's which is nice, but I have noticed, the only O2 I can test is the one I replaced. Hmm, bank 1, position 1 is the pass, before cat right?

If that is true, maybe the 4 "new" ones installed just are not cutting mustard? I can smell it running rich at idle. Something isn't right. The one I did replace was direct fit Bosch from local parts store.

gschotland · 02-02-2010, 12:05 AM

Quote:

Originally Posted by root_werks

I am running the CarCode OBD2 software which really isn't good for much of anything other than pulling the codes and clearing them.

Sounds like a Durametric would be a worthwhile investment. I got mine (haven't had to use it yet), the non-pro version that can only be used for three cars, on craiglist for $170 with 2 car slots left. If you ever sell your car you'll probably be able to recoup at least half of the Durametric's cost. Good value IMO.