Notices
964 Forum 1989-1994
Sponsored by:
Sponsored by:

The silly little question thread ...

Thread Tools
 
Search this Thread
 
Old 06-08-2016 | 05:05 PM
  #1171  
dhc905's Avatar
dhc905
Banned
 
Joined: Mar 2014
Posts: 1,672
Likes: 42
From: East Bay, CA
Default

Originally Posted by dhc905

It's idle basically from 1:00 on. I've watched it a bunch of times and I think I notice something at :03; the tach sort of "hangs up" for a brief second before returning to idle during my gearshift and the CEL jumps on a moment later for much longer than it typically does. That's observation #1. This makes me thing it's not an idle control valve issue or an idle microswitch.

Observation #2, it still flashes when it's at idle and the tach shows no movement whatsoever. That I can't figure out.



I just had a thought. This problem occurred several months ago and I thought the solution was found when I removed the engine sound deadening from interfering with the throttle mechanism.

No CEL's, no issues with idle/return to idle.

I did swap out my wheels and did so by jacking the rear of the car up. The car was in an rear elevated stance for a good bit. Is it possible that oil sloshed around and got into the ISV? It's definitely not overfilled, but could having it on a slope have created a similar outcome?

Last edited by dhc905; 06-08-2016 at 06:04 PM.
Old 06-11-2016 | 02:26 PM
  #1172  
dhc905's Avatar
dhc905
Banned
 
Joined: Mar 2014
Posts: 1,672
Likes: 42
From: East Bay, CA
Default

double post

Last edited by dhc905; 06-11-2016 at 03:29 PM.
Old 06-11-2016 | 02:58 PM
  #1173  
dhc905's Avatar
dhc905
Banned
 
Joined: Mar 2014
Posts: 1,672
Likes: 42
From: East Bay, CA
Default

Sorry for amateur hour, but WTF are these clips? They sort of look like jubilees but aren't. I'm trying to get to my ISV, btw.




Originally Posted by dhc905
IMG 05731 - YouTube



I just had a thought. This problem occurred several months ago and I thought the solution was found when I removed the engine sound deadening from interfering with the throttle mechanism.

No CEL's, no issues with idle/return to idle.

I did swap out my wheels and did so by jacking the rear of the car up. The car was in an rear elevated stance for a good bit. Is it possible that oil sloshed around and got into the ISV? It's definitely not overfilled, but could having it on a slope have created a similar outcome?
Old 06-11-2016 | 04:41 PM
  #1174  
Mr.Alex's Avatar
Mr.Alex
Three Wheelin'
 
Joined: May 2012
Posts: 1,350
Likes: 4
From: NYC
Default

Yes they are. I just cut them off and replaced them with regular clamps.
Old 06-11-2016 | 05:52 PM
  #1175  
JasonAndreas's Avatar
JasonAndreas
Technical Guru
Rennlist Member

 
Joined: May 2002
Posts: 8,138
Likes: 112
From: USVI
Default

Originally Posted by dhc905
Sorry for amateur hour, but WTF are these clips? They sort of look like jubilees but aren't. I'm trying to get to my ISV, btw.

You can put the blade from a flat head screwdriver into the crimped section of the oetiker ear clamp and then rotate the screwdriver to loosen the crimp.
Old 06-13-2016 | 02:35 AM
  #1176  
dhc905's Avatar
dhc905
Banned
 
Joined: Mar 2014
Posts: 1,672
Likes: 42
From: East Bay, CA
Default

Thanks guys. I followed Jason's method to get them off and replaced with jubilees to put my new ISV. Cured the CEL, and honestly seems much more responsive than before, but I'm not above putting that in the placebo column. Now have an extra ISV that's been flushed with degreaser (there was some oil residue in one of the inlet pipes), but just happy that my CEL is cured.
Old 06-16-2016 | 01:13 AM
  #1177  
dhc905's Avatar
dhc905
Banned
 
Joined: Mar 2014
Posts: 1,672
Likes: 42
From: East Bay, CA
Default

FML. CEL came back on a quick drive to get some gas and fill up the tires. I was able to get the RPM to sort of "stick" while in 5th gear and the CEL stayed on rather than flicker on and off.

Can one clean the idle microswitch as I think that's one of my last potential points of issue with this...
Old 06-18-2016 | 01:36 PM
  #1178  
HiWind's Avatar
HiWind
Thread Starter
Race Car
 
Joined: Nov 2011
Posts: 4,356
Likes: 47
From: Cape Town, RSA & Sarasota FL
Default

Has anyone done the pulse sender (crank position sensor) upgrade/update to the 996 part?

996 606 105 00 is the new Bosch part, the old one being 911 606 217 02 (or 03?)

I think it just involves changing the plug from the old 964 unit onto the new 996 unit ... right?

(sorry search has not been friendly at all!)
Old 06-19-2016 | 06:46 AM
  #1179  
andy928's Avatar
andy928
Instructor
 
Joined: Feb 2006
Posts: 247
Likes: 47
From: Auckland
Default

Has anyone got a photo off all the interior dash lights and counsel lights on so i can work out whats not working......................... also mine is tip do the lights work by the selector ???
Old 06-19-2016 | 08:15 AM
  #1180  
james_marshall's Avatar
james_marshall
Rennlist Member
 
Joined: Aug 2012
Posts: 182
Likes: 0
From: Stockport uk
Default Crank sensor

HiWind
The way I did it, was to leave the 996 part alone and change the 964 part in the wiring loom where the new part connects. Then had to make the 996 part fit into the metal bracket where it is secured. Just a little dremmeling! - either way, same result I suppose.
Old 06-19-2016 | 10:37 AM
  #1181  
HiWind's Avatar
HiWind
Thread Starter
Race Car
 
Joined: Nov 2011
Posts: 4,356
Likes: 47
From: Cape Town, RSA & Sarasota FL
Default

thanks James .... gotcha!
Old 06-19-2016 | 07:57 PM
  #1182  
Goughary's Avatar
Goughary
Race Car
 
Joined: Oct 2010
Posts: 4,866
Likes: 435
From: fairfield, CT
Default

Originally Posted by HiWind
Has anyone done the pulse sender (crank position sensor) upgrade/update to the 996 part?

996 606 105 00 is the new Bosch part, the old one being 911 606 217 02 (or 03?)

I think it just involves changing the plug from the old 964 unit onto the new 996 unit ... right?

(sorry search has not been friendly at all!)
Not familiar w this one. What's the point? Benefit?

Thanks
Old 06-20-2016 | 12:10 AM
  #1183  
jimq's Avatar
jimq
Burgled
Rennlist Member
 
Joined: Aug 2003
Posts: 22,384
Likes: 14
From: Altamonte Springs, Fl/Gwynns Island, Va.
Default

Originally Posted by andy928
Has anyone got a photo off all the interior dash lights and counsel lights on so i can work out whats not working......................... also mine is tip do the lights work by the selector ???
no light by the selector at least on a 91. Selector lights up in the tach. I believe 92 and up shows what gear your in.
Old 06-20-2016 | 04:00 AM
  #1184  
andy928's Avatar
andy928
Instructor
 
Joined: Feb 2006
Posts: 247
Likes: 47
From: Auckland
Default

thanks for that.

So no lights on the trip selector in the middle just on the tach display itself as this is working . can anyone confirm that has a 1992 before i try to pull apart and see.

Also does the light switch have a light in it so you can find it at night?

Thanks
Old 06-20-2016 | 07:39 PM
  #1185  
HiWind's Avatar
HiWind
Thread Starter
Race Car
 
Joined: Nov 2011
Posts: 4,356
Likes: 47
From: Cape Town, RSA & Sarasota FL
Default

Originally Posted by Goughary
Not familiar w this one. What's the point? Benefit?

Thanks
911 part is nla is what I was lead to believe .. 996 part also less costly


Quick Reply: The silly little question thread ...



All times are GMT -3. The time now is 07:45 AM.