1985 928 Porsche Starts and Runs but....


Asked by Jun 07, 2013 at 10:44 AM about the 1985 Porsche 928 S Hatchback

Question type: Maintenance & Repair

My 1985 Porsche starts and runs great sitting at idle.  However, when I get in and drive it
dies as soon as I take my foot off the gas.  It has an air slide valve but no air idle control
valve that I can see.  I'm wondering what possible causes might be and am looking for the
top few items that fail commonly on this car.  I've only owned it a few months and love it
and it only has 50k miles on the clock....want to keep her running.

1 Answer

Stephen Smith

Check the fuel pressure regulator on top of the engine before the fuel rail(s).

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 1980 Porsche 928 won't start? 2 answers

    I have a 1980 Porsche 928 and can't get the car to start. I have replaced the fuel pump, cleaned and reinstalled the fuel injectors and replaced the injector hoses with new ones. I also have replaced ...

    1980 Porsche 928


    Maintenance & Repair

  • My 1985 928 hesitates between 1800 and 2200 rpm then takes off. 25 answers

    Car hesitates on takeoff. Around 1800 rpms. Idles fine.

    1985 Porsche 928


    Maintenance & Repair

  • '84 Porsche 928S Clutch Problems 14 answers

    Hello, I recently purchased a 1984 928S 5 speed. A few days ago, what I believe to be the throwout bearing started to make a rattling noise when I pushed the clutch pedal. When I drove it today it be...

    1984 Porsche 928


    Maintenance & Repair

  • I need help with timing mark on my 1986 porshe 928s 5.0 32 answers

    Im checking my timing marks on my 86 928s porshe 5.0.removed number 1 plug stuffed a rag in it tapped the motor till it popped..checked my cam marks, both cam marks are on the mark but my crank ma...

    1986 Porsche 928 S Hatchback


    Maintenance & Repair

  • how much would a 928S cost today 1 answer

    needs valve work.

    1985 Porsche 928


    Shopping & Pricing

Search Porsche 928 Questions

Porsche 928 Experts

#1 Tom Demyan
Tom Demyan
Reputation 120
#2 MTA1968
Reputation 110
#3 Michael Griffin
Michael Griffin
Reputation 100
View All

Related Models For Sale

Used Porsche 911"
145 Great Deals out of 4,408 listings starting at $12,995
Used Porsche 944"
111 listings starting at $8,995
Used Porsche 924"
18 listings
Used Chevrolet Corvette"
410 Great Deals out of 20,178 listings starting at $3,688
Used BMW 3 Series"
1,627 Great Deals out of 39,404 listings starting at $888
Used BMW M3"
95 Great Deals out of 1,888 listings starting at $5,495
Used Ford Mustang"
716 Great Deals out of 41,261 listings starting at $900
Used BMW 7 Series"
206 Great Deals out of 5,845 listings starting at $2,995

Used Cars For Sale