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Registered
Join Date: Nov 2004
Location: MICHIGAN
Posts: 181
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84 Carrera 3.2 stalling issue
Just started recently, after driving the car for a couple of miles and at a stop the car would stall.But starts back up fine but only occurs at idle. Any suggestions where to start to look,(fuel filter)?
Tanx, Feisal |
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05-15-2009, 08:29 PM
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Industrial Grade Tool
Join Date: Jul 2006
Location: Seattle, WA
Posts: 219
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I saw similar problems, even stalling between shifts. Turned out to be a tired alternator with worn-out brushes. A new voltage regulator corrected it instantly. A new alternator would have been even better, but... $
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------------------------------------------------------------------------ /Jon |
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05-15-2009, 09:56 PM
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Monkey Butt Forespin
Join Date: Jul 2007
Location: Cumberland, RI
Posts: 474
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Mine (also '84) was the Cylinder Head Temp Sensor (CHT). It's telling the computer your engine's running dangerously hot & shutting you down (if that's the culprit).
Not terribly hard to replace yourself.
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Fred Hurder Jr For Tech Questions: '84 911 Carrera Cabriolet (US) Weltmeister Chip, Fabspeed Euro Pre-Muffler, M&K 1-in / 1-out Muffler 22 ERP /29 Sander Hollow T-Bars, Bilstein HD Struts / Sport Shocks ERP Poly-Bronze Bearings (A-Arms & Spring Plates), Stock Swaybars Turbo Tie Rods, '92 C2 5-Spoke wheels w/ 1" adapters, Drilled Zimmermans Yes, I drive mine as much as possible. If it's >32° & sunny, I've got the top down. 
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05-16-2009, 02:02 AM
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muck-raker
Join Date: Jan 2009
Location: Coastal PNW
Posts: 3,059
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Quote:
I agree, it could possibly be the CHT sensor. "Not terribly hard to replace", but a little bit of a PITA for me. Not meaning to hijack, but I would LOVE to find out where to pick up the tool for the CHT sensor. On another note...I had a similar problem recently. It turned out to be the fuel pump. This could very likely be your problem as well. It's tough to nail down if the problem is intermittant. Are you finding that the car won't immediately re-start, and will only re-start after 2-10 minutes of inactivity? If so, it sounds like the fuel pump is on it's way out.
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STONE '88 Cabriolet, using EP Slick 20w50 partial synthetic Snake Oil...just as Rommel intended.  Deny Everything; Admit Nothing; and Always Make Counter-accusations 
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05-16-2009, 12:39 PM
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Monkey Butt Forespin
Join Date: Jul 2007
Location: Cumberland, RI
Posts: 474
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I made my own... deep socket & cut the groove in it. A 'proper' O2 Sensor Socket MIGHT work for you, but from memory there was a reason I made my own... not deep enough or something.
Yes, concer, PITA, but slow & steady & it's not a 'technically difficult' job.
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Fred Hurder Jr For Tech Questions: '84 911 Carrera Cabriolet (US) Weltmeister Chip, Fabspeed Euro Pre-Muffler, M&K 1-in / 1-out Muffler 22 ERP /29 Sander Hollow T-Bars, Bilstein HD Struts / Sport Shocks ERP Poly-Bronze Bearings (A-Arms & Spring Plates), Stock Swaybars Turbo Tie Rods, '92 C2 5-Spoke wheels w/ 1" adapters, Drilled Zimmermans Yes, I drive mine as much as possible. If it's >32° & sunny, I've got the top down.
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05-16-2009, 03:15 PM
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Green Skull 006
Join Date: May 2002
Location: Rhode Island
Posts: 2,040
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I had the same problem, but it was very intermittent. Would only stumble and cut out when it was humid out.
 Turned out that the sensor wires (CHT & engine speed) which looked ok, crumbled when touched. Fred is right, it's easy enough to cut a groove in a deep socket with a grinding wheel to get to the sensor.
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S Reg 823 R Gruppe 246 1955 pre-A Carrera Speedster...x 1974 leichtbau..."Sascha" "It makes me sad. Our cars were meant to be driven, not polished" - Ferry Porsche while surveying a PCA Parade concours field. |
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05-16-2009, 03:36 PM
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muck-raker
Join Date: Jan 2009
Location: Coastal PNW
Posts: 3,059
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Quote:
Great advice, thanks much. I'll go out and butcher one up this weekend
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STONE '88 Cabriolet, using EP Slick 20w50 partial synthetic Snake Oil...just as Rommel intended. Deny Everything; Admit Nothing; and Always Make Counter-accusations
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05-16-2009, 04:15 PM
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Registered
Join Date: Nov 2004
Location: MICHIGAN
Posts: 181
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I don't think its the fuel pump because it starts up immediately.Does run without stumbling,but seams to happen when I drive the car hard.
Thanx for all the input so far. |
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05-16-2009, 05:20 PM
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muck-raker
Join Date: Jan 2009
Location: Coastal PNW
Posts: 3,059
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Then you can cross the fuel pump off the list. Go with Fred and Jim's advice and start testing sensors. Do you keep Dr. Bentley around for spec references?
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STONE '88 Cabriolet, using EP Slick 20w50 partial synthetic Snake Oil...just as Rommel intended. Deny Everything; Admit Nothing; and Always Make Counter-accusations
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05-16-2009, 06:32 PM
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