How long after doing a DME reset should your idle return to normal? I simply unhooked the negative terminal of the battery for 15 minutes and then started the car back up as normal. I went for a "spirited drive" of about 25 minutes, shut the car off for about 20 minutes, then got back in and went for another 25 minutes. The idle still hasn't returned to normal, and actually is fluctuating pretty badly. Any ideas? Thanks.
Brian

 

Hi Brian:

Sometimes it takes a while.

I usually turn the key on for a minute and start the engine without touching the throttle and let it idle for 3 minutes while it settles down.

Is your Idle Stabilizer Valve nice and clean??

How old is your oxygen sensor?

 

Steve,
How do I get at my Idle Stabilizer Valve? I have Adrian's book, does it say how in there? I'm not sure how old my oxygen sensor is, I'll have to find out. Before the reset it idled much better than it does right now. I did have a few problems however, for example:
1. Idle would be fairly solid, but would vary throughout the drive. When warm the idle would move up to about 1100 or 1200 RPMs. Sometimes it would sit down around 800 RPMs.
2. Never did I ever have to give the car gas to go in reverse. In fact, I would have to brake constantly while reversing to keep from accellerating to full speed in reverse.
3. The problems I was having with hesitation and a few occurrences of slight stalling have not occurred yet, but I haven't really put too many miles under the wheels since the reset.
So, the problems I was having while driving seem to be gone, but now the idle refuses to settle down. I'm going to try letting the car just sit when I start it up today. I'll give it a few minutes and see if it doesn't settle down.
Thanks again Steve.

 

While we're on the subject and as I was just saying to Robmug - without any doubt, I have had different results from having the DME reset with the Bosch Hammer than by doing it the DIY way with a battery disconnect.

This is contrary to everything I have heard on this subject, which says both methods, in effect, do the same thing to the DME.

Hammer= rock steady idle.
Disconnect=lumpy idle.

 

Dear John,
Idle stabilisation using the Bosch Hammer only deals with the idle. The disconnect method allows you time to load up driving maps.
I have also found that the Hammer idle stabilisation program tends for some reason to fall away after a couple of weeks in some 964s. I recently had to deal with such a complaint.
I have used both methods and I have never struck any problems with either method.
It was a wise old Porsche engineer who introduced me to flashing the DME and the disconnect methods. I do not talk much about flashing the DME anymore because people tend to mess it up.
The disconnect method is not going to work well if you have a problem sensor either. The Hammer version does seem to work because it replaces the sensors during the process.
Now we would all use the Hammer if we had access to them but few people are willing to drive hundreds of miles in search of one. Plus you have to find somebody who knows how to use it. There are not many Lorens in this world. Wish he would set up a worldwide franchise for mechanics on call out with Hammers like he does in Southern CA.
Ciao,
Adrian
964C4

 

http://cgi.ebay.co.uk/ws/eBayISAPI.d...EBWA%3AIT&rd=1

 

Dear Ian,
I just tried to bid on it. I stopped at 350 Euros. The failed battery pack is going to cost an absolute fortune to try and fix. At least another 200 maybe 300 Euros. The software level and type is also a risk.
As usual I bet this will end up around the 1000 Euros level.
Ciao,
Adrian
964C4

 

i was reading one of your posts last night , about obtaining the porsche software and connectors etc.
i didn't even bid !!!
just wiped it from my "watching" list !!

 

Damn. The end of this thread was a rollercoaster ride!

 

this is interesting too !!!
http://cgi.ebay.co.uk/ws/eBayISAPI.d...EBWA%3AIT&rd=1

 

sorry , wrong link !!!
though that denon is a steal , and would suit a 964 !!!!

http://cgi.ebay.com/ebaymotors/ws/eB...me=rvi%3A1%3A1

 

He wants far too much for that wheel as well,
Ciao,
Adrian
964C4

PS: If I could have got the actual hammer cheap enough, the connection would have been in the package I could have worked on getting the software module. However the price is going to go through the roof and it is not worth it.

 

adrian ,
what is a " blogger " ???

 

Adrian;

Replacing the Hammer battery pack is very simple. You just buy 6 NiMetal
batteries ($2.00 each) and make a new battery pack from the old one.
Based on your background and car abilities, it'll be a "breeze".

When I bought my Hammer, I paid $1800 about 4 years ago. I mainly use
my PST2 tester because of the more later car problems. The Hammer is perfect
for the 964 as its problems are generally simple. My firmware version is 8.

Good Luck
Loren
'88 3.2

 

Dear Ian,
A Blog is an online journal. Like a day book. Sort of a mini web site if you like that you can make hourly, daily updates to. Most of these sites are free and you use them so others can see your work. I use them to try and get certain points across to the public. Auto scams, how people are getting rich from your dreams but you will not get rich from purchasing their products like books on how to become a millionaire doing what you enjoy.
I also use one to list the clients of my new Literary Agency. I have them linked from my web site. One as an advice column. You can say they are your own personal online newspaper column. Avoid the offers of making money from blogging.
You can have private blogs as well but that sort of defeats the purpose.
It is great fun being a blogger.
Ciao,
Adrian
964C4