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ovolactohippo

1991 VW Polo Coupe 1.3CL MkIIF - Diagnostic?

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ovolactohippo

Hi,

My girlfriend's 1991 Mk2 Polo Coupe (single point injection) has been having problems with starting for a while. Her father's been going through it for about a month now and is at his wit's end trying to work out what might be causing it! Injection head has been swapped out for another one, tried 2 different ECUs, wiring all checked for continuity, new lambda sensor fitted - can't remember everything he's done to be honest off the top of my head.

I was looking at getting leads to hook it up to vag com but from the haynes manual wiring diagram and looking in the passenger footwell there seems to only be one 2-pin connector which is diagnostic (and another 1-pin black connector with two wires coming from it that we're unsure of what it is). Is it possible to get leads to do diagnostic on this car? From looking around on the internets I'm guessing that it would need a 2x2 connector.

Any help much appreciated!

Thanks

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big burt

Yes you need a 2X2 connector to connect to a diagnostics machine . Where abouts are you? Mark

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ovolactohippo

Hi, thanks for the reply.

The car is currently in Ebbw Vale in South-East Wales. I don't see how a 2x2 connector could work with the car as there only seems to be the single 2 pin diagnostic plug. I'm wondering if diy diagnostic is possible or not.

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big burt

There should be 2 plugs, one is diagnostics one is power. Hope this picture helps. My scanner was £50 with lead from a company called Gendan. It is really Important you connect it correctly though, Cheers Mark

Picture014.jpg

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ovolactohippo

I can find one plug for diagnostics (yellow wire and yellow/white wire) but there doesn't seem to be another 2-pin plug (and the haynes manual wiring diagram suggests there isn't one one the single-point model).

Thanks for your help - I'm thinking it's not possible :(

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