Question about 1987 Volkswagen Cabriolet

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87 VW cabriolet runs rough at idle, gas in oil

I pulled my 87 cabriolet out of the garage last spring and tried to start it. It started but ran rough at an idle. I pushed the accelerator to high idle and it sounded like it ran good. When i let off the pedal, it ran rough and stalled out repeatedly. It ran fine when I put it in the garage. I did a tune up and changed the oil. I noticed when I changed the oil that there was a lot of gas in the oil pan. To my knowledge it has a cis-e injection system which I'm not familiar with. What would cause this problem and where would I start to fix it?

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6 Suggested Answers

tepfy
  • 319 Answers

SOURCE: 87 VW Cabriolet starting problems

I would start with a fuel line psi test. then have your fuel acumulator.

http://home.hiwaay.net/~langford/CIS.html

check this out and see if it helps. It sounds like you are priming the psi up when cranking then it can go. but when you let it sit the pressure drops and has to build up again. I a not a VW person myself but love tinkering, so let me know how it goes.

tepfy

Posted on May 01, 2009

greesemonkey
  • 67 Answers

SOURCE: how to find and replace an 87 vw cabriolet fuel pump?

there is a pump in the tank ther is one under car.one in take is a pre pump one under car in black plastic housing .make sure fuel pump relay is working.

Posted on Nov 30, 2008

  • 2 Answers

SOURCE: I am trying to pull

bad gas

Posted on Sep 29, 2009

  • 1 Answer

SOURCE: electrial digram of cabriolet 1986-87 VW

chilton's manual #70400 has wiring digram

Posted on Apr 03, 2010

drsinister69
  • 2317 Answers

SOURCE: What type of fluid goes into my 87 VW Cabriolet 5

80w/90 Gear oil.

Posted on Nov 04, 2010

  • 14036 Answers

SOURCE: I'm getting fuel to injectors

VOLKSWAGENS THE 1990 MODELS HAS CIS - E FUEL INJECTION. THE FUEL INJECTORS CONTROLLED BY AIR FLOW SENSOR PLATE REST POSITION INCORRECT. INSPECT AIR FLOW SENSOR PLATE REST POSITION. LOW FUEL PRESURE FROM WEAK PUMP WILL CAUSE FUEL INJECTORS NOT TO WORK.

Posted on Sep 07, 2011

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