Author Topic: 91 MK2 Cab fuel pump keeps running with key off  (Read 266 times)

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torque24

  • Posts: 2
Hi

91 VW Cab was a daily driver
No start - key on fuel pump primes but keeps running and excessive pool of fuel filling cylinders with key off
removed all plugs and found cylinders full of fuel - drained engine oil and manually cranked engine to drain all

« Last Edit: Jun 08, 21, 06:43 by torque24 »

Autohau5

  • Posts: 6802
  • Gasoline rainbow in the gutter
Re: 91 MK2 Cab fuel pump keeps running with key off
« Reply #1 on: Jun 09, 21, 18:53 »
Sounds like a bad ECM keeping the injectors open and fuel pump running. How are your engine grounds? Specifically the large one from battery to transmission? If that ground is poor, the injector driver in the ECM melts and locks the injectors full open constantly.
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