Notices
993 Forum 1995-1998

Won't idle when cold; OBD-I scanner ?

Thread Tools
 
Search this Thread
 
Old Oct 1, 2009 | 07:35 PM
  #1  
vanHunks's Avatar
vanHunks
Thread Starter
Intermediate
 
Joined: Oct 2008
Posts: 36
Likes: 0
From: Cape Town
Default Won't idle when cold; OBD-I scanner ?

The engine on my ROW '96 VR was rebuilt recently following a big-end failure and the car runs perfectly with one exception : it won't idle when cold. It starts fine but then just dies. After four or five restarts and some sensitive working of the throttle it behaves itself and runs normally once there's a little heat in the engine. The other odd symptom is that it idles too fast when warm, at a little over 1000 RPM. I've checked the resistances on the engine and intake temperature sensors and they seem credible. I took the opportunity while the engine was out to clean the ISV but am wondering if I messed up along the way.

I'll have someone read the OBD codes (OBD I only, unfortunately and I've been unable to find a scanning device to do this myself) to see if it reports any problems but if anyone has direct experience of these symptoms and found the cause I would be grateful if you would pass on the experience.

If there is an OBD I scanner out there other than the Bosch "Hammer" I would be grateful as well for a reference.
Reply
Old Oct 1, 2009 | 07:58 PM
  #2  
mongrelcat's Avatar
mongrelcat
Drifting
 
Joined: Mar 2009
Posts: 2,389
Likes: 6
From: Seattle
Default

Here's one option I just became aware of. I'm not sure if they are still available from the seller.
https://rennlist.com/forums/964-foru...assembled.html

Durametric is ~$700, Bosch Hammer is $$$$
Reply
Old Oct 2, 2009 | 11:51 AM
  #3  
vanHunks's Avatar
vanHunks
Thread Starter
Intermediate
 
Joined: Oct 2008
Posts: 36
Likes: 0
From: Cape Town
Default OBD-I Scanner

Thanks, will follow up.
Reply




All times are GMT -3. The time now is 02:00 PM.

story-0
9 Vehicles Porsche Helped Engineer that Aren't Porsches

Slideshow: Long before engineering consulting became trendy, Porsche was quietly helping other automakers build everything from supercars to economy hatchbacks.

By Verdad Gallardo | 2026-05-15 12:44:44


VIEW MORE
story-1
9 Features and Characteristics That Only Porsche People Understand

Slideshow: Some brands build cars. Porsche builds traditions, obsessions, and a few habits that stopped making sense decades ago but somehow became part of the charm.

By Verdad Gallardo | 2026-05-13 18:46:13


VIEW MORE
story-2
I've Written 500 Rennlist Articles: Here's How Porsche Has Changed Along the Way

Slideshow: Six years and 500 Rennlist articles later, these are the biggest changes at Porsche.

By Joe Kucinski | 2026-05-11 09:52:55


VIEW MORE
story-3
10 Most Unnecessary Porsches Ever Built (And Why We Love Them)

Slideshow: Some Porsches exist for very specific reasons-others feel like they were built just to see if anyone would notice.

By Verdad Gallardo | 2026-05-06 18:00:32


VIEW MORE
story-4
Porsche 911 GT3 S/C vs 718 Spyder RS: 10 Categories, One Winner

Slideshow: Choosing between the 911 GT3 S/C and 718 Spyder RS in 10 key categories to determine one surprising winner.

By Joe Kucinski | 2026-05-05 12:51:46


VIEW MORE
story-5
This Builder Is Turning Heads With Its Slantnose 911 Creation

Slideshow: A small Polish tuner has reimagined the Porsche 911 Slantnose for the modern era, blending 1980s nostalgia with widebody tuning culture and serious performance upgrades.

By Verdad Gallardo | 2026-05-01 10:49:43


VIEW MORE
story-6
Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture

Slideshow: Porsche has created a Japan-only 911 GT3 Artisan Edition that blends track-ready hardware with design cues inspired by traditional Japanese craftsmanship.

By Verdad Gallardo | 2026-04-28 19:37:40


VIEW MORE
story-7
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look

Slideshow: Porsche's latest electric Cayenne Coupe blends dramatic styling with supercar acceleration, turning the brand's midsize SUV into a 1,139-horsepower flagship.

By Verdad Gallardo | 2026-04-27 19:39:30


VIEW MORE
story-8
10 Porsche Colors That Have More Personality Than Most People

Slideshow: Porsche's wildest paint colors aren't just shades-they're full-blown personalities on four wheels.

By Verdad Gallardo | 2026-04-27 19:38:13


VIEW MORE
story-9
Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod

Slideshow: The last of the Speedsters doesn't just close a chapter, it makes quite the bold, air-cooled statement.

By Verdad Gallardo | 2026-04-22 17:55:04


VIEW MORE