no spark 1986 Cabriolet

20

Asked by Dec 25, 2014 at 02:24 PM about the 1986 Volkswagen Cabriolet

Question type: Maintenance & Repair

I have replaced the distributor, timing belt, coil, ICM new battery, ignition switch.
I only get one spark at the distributer when I turn the key on and one spark when I turn
the key off. Help !

1 Answer

45,825

It's either the ECU or a bad ignition control module. I have read other forums and the same symptoms you are having were exactly like the individual with a bad ECU. Here is what he had to say: When I purchased my Cabriolet it had this same problem of a single spark then nothing. I replaced all the rest of the ignition system before I found the problem, but I had to replace the ECU (the big electronic box on the drivers side back under the hood in its own separate compartment) It was an easy fix and can be done by anybody with basic tools. Im not saying this is your problem Im just saying I had the symptoms you described and it fixed it for me. If you want to try to do it locate a new or used ECU then: 1. Disconnect the battery 2. Disconnect the ground strap on the ECU bracket 3. Remove the screw holding the ECU bracket on and take the ECU and bracket out 4. Unplug the ECU and remove it from the bracket 5. Plug the replacement ECU in and attach it to the bracket 6. Re-install the bracket 7. Re-attach the ground strap 8. Reconnect the battery Its that easy. I hope it works.

1 people found this helpful.

Your Answer

Volkswagen Cabriolet Experts

  • #1
    Reelin68
    Reputation
    280
  • #2
    tenspeed
    Reputation
    230
  • #2
    Scott Sr.
    Reputation
    230
View All

Related Models For Sale

Used Volkswagen Golf
67 Great Deals out of 4,893 listings starting at $999
Used Volkswagen GTI
80 Great Deals out of 6,287 listings starting at $2,395
Used Volkswagen Jetta
421 Great Deals out of 25,220 listings starting at $1,299
Used Jeep Wrangler
250 Great Deals out of 19,077 listings starting at $2,500
Used BMW 3 Series
833 Great Deals out of 32,432 listings starting at $995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.