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Volkswagen Passat: 1990-1994 (B3) 91 passat fuel pump fuse problems


Permlink Replies: 4 - Pages: 1
Last Post: Dec 22, 2010 5:30 PM Last Post By: FKH161
caseyabba

Posts: 1
Registered: 02/03/04
91 passat fuel pump fuse problems
Posted: Feb 3, 2004 11:26 AM
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Hello everyone,
After a trip to the car wash to remove all the salt and snow from my car I drove around for about 20 minutes then my car stalled. First thing i checked was the fuse for my fuel pump. It was blown. I replaced it and it blew 2 minutes later. The car made it home.
While i was pressure washing my car (around the tires) did i do something to my fuel pump? Or could there be another problem?
If i have to take it to a garage, is there anyway to avoid towing it. Can i rig something up to the fuse panel?
Thanks for the help.
JoeBean

Posts: 4,697
Registered: 02/14/02
Re: 91 passat fuel pump fuse problems
Posted: Feb 3, 2004 2:39 PM   in response to: caseyabba in response to: caseyabba
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I'd jack the rear right wheel up a bit and get underneath the car. The main fuel pump is in front of that tire. There is an electrical connector going to it. Remove the connector and make sure you don't have excessive corrosion on it. Clean it as need be and then reconnect it. See if that works. If not, my guess is your fuel pump is probably dying. In such a case I would suggest you don't use a larger fuse or a jumper to run the fuel pump as there is a risk of fire if the current draw is too high.

Terry
norm68

Posts: 1
Registered: 07/21/10
Re: 91 passat fuel pump fuse problems
Posted: Jul 21, 2010 10:48 AM   in response to: JoeBean in response to: JoeBean
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I am having the same problem. Changed the fuel pump in the trunk and the car worked fine for 3 days, then car stop. Changed fuse but once we tried to start the car the fuse 18 blows, I don't know what to do anymore HELP!!!
BIGHAMMER

Posts: 98
Registered: 09/24/04
Re: 91 passat fuel pump fuse problems
Posted: Dec 20, 2010 3:59 PM   in response to: caseyabba in response to: caseyabba
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My B3 has 2 (two) fuel pumps, one inboard of RH rear wheel and then other is inside the FUEL TANK. The one in the fuel tank had brushes that wore a groove so deep in the cummutator that they shattered when I slid it out. I relaced that pump (TRANSFER PUMP) and I hope the MAIN boost pump does not go next. ALWAYS check relays and....NEVER BUY ANYTHING FOR THE B3 UNTIL YOU KNOW ITS NO GOOD..FOR SURE!
FKH161

Posts: 7,610
Registered: 12/29/05
Re: 91 passat fuel pump fuse problems
Posted: Dec 22, 2010 5:30 PM   in response to: BIGHAMMER in response to: BIGHAMMER
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Fuse #18 also supplies power to the O2 Sensor Heater Circuit... a short in the heater or the wiring will also blow that fuse.

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