1987 928S4 - RPM Probs, HELP!
05-22-2005 | 06:12 AM
#31
Drifting
Joined: Nov 2003
Posts: 2,736
Likes: 92
From: London, UK
Originally Posted by WallyP
There have been several times that I have been seriously tempted to get a bunch of 12 vdc LEDs and some speaker wire and build an annunciator panel for the GT. I would have LEDs that show when there is power out of the fuel pump relay, the LH relay, the EZK relay, the ignition switch, etc., etc., etc.
Sure would be nice to just look down at a panel and see what is going on...
Sure would be nice to just look down at a panel and see what is going on...
I have 12v LEDs fitted to most of the relays, different colours of course, looks like a christmas tree now. This was to help me diagnose a no start - unfortunately it was the cam belt...
05-22-2005 | 03:13 PM
#32
Three Wheelin'
Joined: Oct 2002
Posts: 1,579
Likes: 0
From: Clearwater Beach, Florida
Originally Posted by Bill Ball
When I hit the rev limiter, the car does not shut down. It bucks off and on the limit. The rev limiter has a very distinct feel.
yep the rev limiter makes a screaming noise and feel like a high revving Ferrari V12
05-31-2005 | 04:00 PM
#33
Thread Starter
Track Day
Joined: May 2005
Posts: 15
Likes: 0
From: New England
Catching up...
Hi John!
Sorry for the delay in repsonse, been away on business. I have the car back now and figure I'll drive it a bit to get a better feel for what is really going on.
I did as you suggested... I think the situation is the first that you suggested...the engine itself does not "cut out" per se but I feel a noticeable "hitch" when the barrier is hit and the RPMs drop like a stone to zero on the tach. The engine itself seems to still be running ok, albeit down near idle speed, as the RPMs recover when I upshift.
As I'm driving it more, I do notice that it the barrier seems to float around the gauge. Sometimes I hit it as low as 3200 RPMs, other times up around 4500. If I drive it conservatively, upshifting at 3,000 you would never know there was an issue...
Thanks a million!
Jeff
Sorry for the delay in repsonse, been away on business. I have the car back now and figure I'll drive it a bit to get a better feel for what is really going on.
I did as you suggested... I think the situation is the first that you suggested...the engine itself does not "cut out" per se but I feel a noticeable "hitch" when the barrier is hit and the RPMs drop like a stone to zero on the tach. The engine itself seems to still be running ok, albeit down near idle speed, as the RPMs recover when I upshift.
As I'm driving it more, I do notice that it the barrier seems to float around the gauge. Sometimes I hit it as low as 3200 RPMs, other times up around 4500. If I drive it conservatively, upshifting at 3,000 you would never know there was an issue...
Thanks a million!
Jeff
05-31-2005 | 04:05 PM
#34
Thread Starter
Track Day
Joined: May 2005
Posts: 15
Likes: 0
From: New England
Interesting...
Originally Posted by TAREK
yep the rev limiter makes a screaming noise and feel like a high revving Ferrari V12
Hey, thanks for the visual man! That is interesting, and gives me a different expectation that I had for the rev limiter... I don't have the high revving or noise, rather it's like someone left the room and flipped off the light switch. One minute it's there, the next the RPMs simple drop off the face of the earth with more of a slightly felt hitch and without a sound...
Thanks...
Jeff
05-31-2005 | 04:18 PM
#35
Thread Starter
Track Day
Joined: May 2005
Posts: 15
Likes: 0
From: New England
Hey Dave C!
AWESOME summarization and feedback man, sorry for the delay in getting back to you as I've been away...
Great thoughts indeed! I have the car back and have been driving it to get a better feel of what's really going on. I would definitely like to take you up on your referrals...it sounds as if Bob at IRA would be the next plausible step, and I have a good buddy that happens to live in Danvers so it's not so far off the beaten path as it might be otherwise. I'll PM and you can fill me in on the details...
Thanks muchly!
Regards,
Jeff
AWESOME summarization and feedback man, sorry for the delay in getting back to you as I've been away...
Great thoughts indeed! I have the car back and have been driving it to get a better feel of what's really going on. I would definitely like to take you up on your referrals...it sounds as if Bob at IRA would be the next plausible step, and I have a good buddy that happens to live in Danvers so it's not so far off the beaten path as it might be otherwise. I'll PM and you can fill me in on the details...
Thanks muchly!
Regards,
Jeff
