Quick! Need a part # check plz
#1
Rennlist Member
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Hi all --
The part number on my DME is 951.618.121.01 (Bosch number 0 261 200 053).
I noticed the part number described in my factory service man for the 951 DME is 951.618.121.02 (Bosch number 0 261 200 075).
What's the difference?
I do know my DME is not the original unit (it says "ebay" on the side).
Thanks.
The part number on my DME is 951.618.121.01 (Bosch number 0 261 200 053).
I noticed the part number described in my factory service man for the 951 DME is 951.618.121.02 (Bosch number 0 261 200 075).
What's the difference?
I do know my DME is not the original unit (it says "ebay" on the side).
Thanks.
#5
Rennlist Member
#6
Rennlist Member
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Yeah I've been battling a couple problems: low boost (1.3 bar gage) and a hiccupping involving zeroing of the tach. See my other threads for complete details, but long story short, I was nearly certain the problem of the hiccupping was the fault of the DME.
Well, unfortunately the hiccupping is only intermittent and when I plugged it into the good car, nothing went wrong after about 5-10 min of driving. Unfortunately the car was a customer's car, so driving for an extended period was out of the question.
I'm now looking into the ignition coil; haven't yet inspected it.
Well, unfortunately the hiccupping is only intermittent and when I plugged it into the good car, nothing went wrong after about 5-10 min of driving. Unfortunately the car was a customer's car, so driving for an extended period was out of the question.
I'm now looking into the ignition coil; haven't yet inspected it.
#7
Rennlist Member
Thread Starter
Trending Topics
#8
Rennlist Member
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I've got the low boost "solved" by mechanically bypassing the WG w/ an LBE. But I'd like to solve it for real.
I've already replaced the CV w/ a used unit which the seller swore up and down was a good unit, but I really can't be sure. Also, the last thing I haven't done to solve this problem is to replace the little knock sensor itself. So, I'm thinking of replacing both because I only want to take off the intake manifold once.
I've already replaced the CV w/ a used unit which the seller swore up and down was a good unit, but I really can't be sure. Also, the last thing I haven't done to solve this problem is to replace the little knock sensor itself. So, I'm thinking of replacing both because I only want to take off the intake manifold once.
#10
Canadian Yankee
Rennlist Member
Rennlist Member
Join Date: Aug 2004
Location: At the Porsche Garage
Posts: 1,975
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
you have an 86 car with part number 951.618.121.01. as of that writing the part number was 951.618.121.02 or superseded to an updated part. No big deal Porsche supersedes there part numbers all the time. That just means they made an improvement to the part and therefore updated the part number. It will work
#11
Rennlist Member
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Cool thanks. This is what I thought.
Yeah I've even replaced the speed/ref sensors but alas no dice...still haven't gotten around to checking the ign coil yet tho.
Yeah I've even replaced the speed/ref sensors but alas no dice...still haven't gotten around to checking the ign coil yet tho.
#12
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Have you checked to see if the AFM is sending a smooth (non-jumpy signal)? When the variable resistor goes bad inside, the signal can jump around.
#13
Rennlist Member
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Yeah I've checked the AFM. All of the harnesses look fine except for the injector harness. The outer insulation is chipped away at places but the actual wire insulation itself is fine.
#14
Rennlist Member
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Just checked ign coil and plug wires. See my other thread I started for details...what should plug wire resistance be???
I started a new thread for making future searches easier.
I started a new thread for making future searches easier.
#15
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
This was extremely tough to diagnose and only after I replaced the DME with another unit did the symptoms go away.