Question about 1991 Volkswagen Passat

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91 vw passat wont start

Hello, i know notthing about cars so i come to you for help.
i have a vw passat 91 5speed 1.6l.
i was driving it and it kept stalling... then finally, as i was slowing down for a red, rpms went down to around 1k and i heard something blow around the front driver area, everything turned off and then back again, i mean everything, radio, lights, car. it turns back on after 1second, and i could only cruise down to a side street. car wouldnt turn on anymore. i checked fuel pump and it doesnt run, it gets no power. could anyone help with find the problem? maybe a map of the wiring for the fuel pump or could it be something else? thanks in advance. email me if youd like at krykowska at yahoo dot ca
thanks again.

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  • krykowska Nov 08, 2008

    in case anyone is interested, i took off the relay panel and one of the connectors was blown.. it was fun work, going through all the wires, especially since i wasn't the first one to do it. some electrical work was done to it before, which added to the confusion.


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There is another fuel pump inside tank,primer pump. check it!

Posted on Feb 09, 2009

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SOURCE: 91 vw passat wont start

Hi,
Really need more info as regards warning lights.
But from the info you supplied.
ie "blow around the front driver area" sounds like the exhaust backing-up which would lead me to suspect the catalytic converter burning out. What happens is the interior of the "cat" melts and is driven to the back of its container.blocking the exhaust. This stops the flow and the gasses are forced back towards the engine. Which I suspect was the noise you heard. And the engine stalls.
Something like the old trick of sticking a potato up the tailpipe.
A quick check on the "cat" but not 100%.......Slide under the car. The cat should be the 1st box in the exhaust system from the front. and give it a good knock with your hand. If you hear a rattle as though something is loose inside it's probably shot.
Also the car can run without a cat. If at all possible disconnect it from the front joint and fire the car up.
It will be noisy, but if it runs ok without cutting out, you've found your problem.
Cats are quite cheap now and if you have to take it a garage, no more than 1 hours labour to fit.
Not a 100% diagnosis and don't take it for granted this is the solution.
Hope this helps.

Posted on Dec 29, 2008

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1991 vw passat 9A 16v 2l B Charging and instrument cluster problem One day car did not start-turn key and nothing at all.(no power to inst. cluster no turning, nothing) One hour later it did turned on and cranked. and run fine. Next day repeated.Battery was dead.When jumped jumper cable melted.The alternator was shorting. Replaced battery and alternator. But alternator is not charging.Alternator tested as good.Replaced anyway, for another alternator that also tested as good just for the heck of it. Still not charging and whole instrument cluster and radio have no power from the very first replacement repair till now. Car will run just fine with out other el. problems as far the battery have charge above 6-7 v. I checked fuses in fuse/relay panel.Did not see any fuse burned. Is there fusible link on charging system or other fuse or relays to check besides the ones on the fuse/relay panel? I there relay that control this? I know that is grounded good. I know that is connected to + battery good. Alt+battery good. There is small blue wire running from alternator?????? called the alt. control wire. I think is says d+ or something on the alt.terminal next to it. It seems that something prevents the alternator to output power. I measured the alt. terminal + and ground when connected and running and all I read is the battery voltage dropping. I think the blue small wire and instrument cluster are close connection to this problem. Unless there is fuse or relay that I missed to check. other possibilities- ECU. -Wiring harness. First- where is all the fuses? and relays to check? fusible links? second -what is the blue wire ? third-instrument cluster involved? keep in mind that everything works besides inst cluster and charging when battery have charge above 6-7v. This car have disconnected and missing ABS and Security . Run grate for about a year till this happened. Rebuilded engine....Clean well maintained.. u4davidatgmaildotcom

Aug 19, 2008 | 1991 Volkswagen Passat

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