Time for Hammer Adaptation
04-14-2011, 08:43 PM
#2
Burgled
Rennlist Member
Rennlist Member
you can do it by undoing the battery for 20 minutes then idle for 2 minutes then take it for a good drive. I could be off a bit on the times so do a search if you try it.
04-14-2011, 09:08 PM
#3
there are a few people that have said their 964 never runs perfectly with the battery disconnection technique, but with the hammer adaptation it is all ok.
how long does the hammer adaptation process take?
I just need to know the time to assist in my negotiations with my mechanic. eg can I drive into the garage with a hot car, connect the hammer, adaptation, leave in 5 mins. all done.? how does it work? or does the car need to cool overnight or something?
04-14-2011, 09:15 PM
#4
Code:
Idle Adaptation
"What exactly is a 'system adaptation', and how is this different from a
battery disconnect reset of the DME?"
The 964 DME ECM has two adaptations:
1. Idle Adaptation -
On the earlier 3.2 DME system the idle was set by an external jumper
(caused open-loop idle) & then the idle screw was set to "center"
the idle RPM. On the 964, the Hammer causes the DME to go open-loop
and then causes the DME to "step" to the center for 880 RPMs. This
results in the closed-loop idle being "centered" for full
regulation.
2. CO adaptation -
The 964 DME ECM goes thru a CO adaptation whereby it runs open-loop
without the O2 sensor to "center" the CO setting to allow for small
variable changes, e.g. air leaks, fuel pressure, so in the
closed-loop mode the O2 system has optimal range (similar to TRA in
OBDII).
Both of the adaptation values are "lost" if the constant battery
voltage (pin 18) is removed. #1 above requires use of the Hammer. #2
occurs at initial running after battery voltage "loss".
"What happens with the idle in the case of a battery disconnect and no
hammer adaptation?"
The closed-loop still maintains the target idle of 880 RPMs but it's not
optimized for load changes, e.g. the A.C. compressor, the fans, the
lights, and the adapted CO setting.
Cheers
04-14-2011, 09:21 PM
#5
Burgled
Rennlist Member
Rennlist Member
what about the scantool adaptation button. It was updated at onetime to supposedly work. I never tried it on my car so dont know what it would do.
04-14-2011, 09:25 PM
#6
thanks guys .. have spent many hours reading all about the adaptation process.
just need to know how long it takes with the bosch hammer 5 mins with a hot car? 1 hr with a cold car? etc
just need to know how long it takes with the bosch hammer
5 mins with a hot car? 1 hr with a cold car? etc
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04-16-2011, 09:02 PM
#11
I know car has to be hot at operating temp I.e temp needle in the middle & when you approach your mechanic make sure your car is warm then it takes 2 minutes to do. If car is not warm enough the adaptation program will not be released. When the pst2 tester is doing adaptation the screen says it is doing it
Last edited by CBR786; 01-23-2015 at 03:56 PM.
04-21-2011, 05:30 AM
#12
Code:
Idle Adaptation
"What exactly is a 'system adapt
"What happens with the idle in the case of a battery disconnect and no
hammer adaptation?"
The closed-loop still maintains the target idle of 880 RPMs but it's not
optimized for load changes, e.g. the A.C. compressor, the fans, the
lights, and the adapted CO setting.
I drove to mechanic with the slight idle dipping.
Bosch Hammer system adaptation.
I drove home without idle dipping.
I didn't touch AC compressor, fans, lights.
I don't agree with the above statement.
FYI ... previously to try to resolve the idle dipping (I may or may not have a LWF), I have tried:
- new ISV
- Steve Wong chip
- new coils
- new fuel filler neck & cap
- checked for vacuum leaks
- new air filter
- cleaned AFM
- fuel injector cleaner fuel additive
- new oxygen sensor
04-21-2011, 05:44 AM
#13
Code:
Idle Adaptation
"What exactly is a 'system adapt
"What happens with the idle in the case of a battery disconnect and no
hammer adaptation?"
The closed-loop still maintains the target idle of 880 RPMs but it's not
optimized for load changes, e.g. the A.C. compressor, the fans, the
lights, and the adapted CO setting.
I drove to mechanic with the slight idle dipping.
Bosch Hammer system adaptation.
I drove home without idle dipping.
I didn't touch AC compressor, fans, lights.
I don't agree with the above statement.
FYI ... previously to try to resolve the idle dipping (I may or may not have a LWF), I have tried:
- new ISV
- Steve Wong chip
- new coils
- new fuel filler neck & cap
- checked for vacuum leaks
- new air filter
- cleaned AFM
- fuel injector cleaner fuel additive
- new oxygen sensor
