No fuel pressure

5

Asked by May 08, 2012 at 11:05 AM about the 1991 Volkswagen Jetta GLI 16V

Question type: Maintenance & Repair

I have a 1991 VW Jetta 2.0 16v . I just bought it from a friend . It has been sitting for a while. After charging the battery when I turn the key on I can hear the fuel pump in the gas tank run for a few seconds. but it won,t start .The gas is good. I have no fuel pressure at the  fuel filter back by the tank. Or up at the front of the car anywhere. Anybody have any ideas what might be wrong? have a Bently manual coming.

7 Answers

195

Is all the electrics good? The pump will make noise for few secs and then it will go slightly quieter, it could be a bad connection on it too, but I would check spark plugs&cablez, coil etc. maybe bad immobilizer?

2 out of 2 people think this is helpful.
Best Answer
5

Thanks, but I can get it to run if I give it a small shot of ether ,I know not too much cause you can blow a head gasket. It just isn't getting fuel. What is this immobilizer? And where is it?

355

I don't think jetta's had immobilisers in 1991

1 out of 1 people think this is helpful.
5

I don"t know either. Still waiting on my Bentley manual

195

the pump itself is in the boot, under the black round cover, if it makes noise after u turn ignition on it should be fine, check the connections on it. If u can smell gasoline out of the exhaust when u trying to start her up its 100% electric if not than check the pump, fuel lines, throttle body (the tend to get stuck sometimes), could be a clog somwhere (maybe fuel filter needs changing). Don't use ether or u might mess it up even worse. I would maybe tow it and try start it with 2nd gear if this doesn't get her moving than could be that the pump died but since u said it does make some noise... Immobilizer is a device that cuts off electrics from the car and you would have no spark, not quite sure where it was hidden. Hope this helps, mine does that too from time to time but it starts in the end but no apparent reason for it

1 out of 1 people think this is helpful.
5

Thanks, I'll try that tomorrow

50

^^ These cars have two pumps and while the auxiliary in the tank may be running, the main fuel pump located under the vehicle is most likely not, this not allowing pressurized fuel to flow all the way up to the rail. Put rear of car on jack stands and engage pumps via jumper on fuse block 30 location and Z1 I believe. When you hear pump running get under vehicle and feel main pump underneath to see if it is running. If not, unplug it and apply multimeter across plug connections from harness and if you show 12-12.5v you have a bad main fuel pump. Wala. Doing simple electric system diagnostics will 99% of the time save you valuable time and keep you from throwing $$ at the problem. I know this is 2 years late but it might help someone else looking for some answers.

5 out of 5 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Code p0442 no start 4 answers

    Have a code of p0442 and same code pending, they have been on for about a week, filled up on fuel and next morning car will not start. Any ideas? Possible bad purge valve?

    2011 Volkswagen Jetta SE

    -

    Maintenance & Repair

  • Won't start 3 answers

    I was driving my 2013 Volkswagen Jetta TDI and it just died and will not start. The code it gave was that we had low pressure to the fuel rail. I put in a new fuel pump, fuel filter and fuel pressu...

    2013 Volkswagen Jetta

    -

    Maintenance & Repair

  • FUEL SYSTEM 11 answers

    WHEN I PUSH DOWN THE GAS PEDLE IT DOSN'T DO ANYTHING DIES?

    1986 Volkswagen Jetta GL

    -

    Maintenance & Repair

  • 2000 VW Jetta 1 answer

    Car turns over. New battery. Fuel pump new, but car won't fire. No fuel moving. New censor less then 3 months ago. What else might be the problem?

    2000 Volkswagen Jetta

    -

    Maintenance & Repair

  • help my epc light is on and im getting no power to my car 1 answer

    the epc light is on and im getting no power can only go like 30mph and fells like it is pulling

    2007 Volkswagen Jetta 2.5L

    -

    General

Jetta

Looking for a Used Jetta in your area?

CarGurus has 33,588 nationwide Jetta listings starting at $700.

ZIP:

Search Volkswagen Jetta Questions

Volkswagen Jetta Experts

#1 FordNut
FordNut
Reputation 2,200
#2 Goodwrench707
Goodwrench707
Reputation 2,110
#3 Deathjam4
Deathjam4
Reputation 1,550
View All

Related Models For Sale

Used Volkswagen Passat
170 Great Deals out of 21,696 listings starting at $1,500
Used Honda Civic
505 Great Deals out of 81,285 listings starting at $558
Used Volkswagen GTI
92 Great Deals out of 5,818 listings starting at $2,500
Used Honda Accord
717 Great Deals out of 82,610 listings starting at $500
Used Volkswagen Golf
28 Great Deals out of 2,285 listings starting at $1,900
Used Toyota Corolla
754 Great Deals out of 75,094 listings starting at $1,790
Used Toyota Camry
878 Great Deals out of 91,817 listings starting at $1,300
Used BMW 3 Series
1,114 Great Deals out of 35,756 listings starting at $900

Used Cars For Sale

2017 Volkswagen Jetta For Sale
17,397 listings starting at $11,235
2016 Volkswagen Jetta For Sale
44 Great Deals out of 1,783 listings starting at $9,995
2015 Volkswagen Jetta For Sale
49 Great Deals out of 3,320 listings starting at $7,310
2014 Volkswagen Jetta For Sale
106 Great Deals out of 3,775 listings starting at $6,499
2013 Volkswagen Jetta For Sale
58 Great Deals out of 1,736 listings starting at $5,890