Fuel pump relays
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Old Timer
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Fuel pump relays
bRought a GSF pump relay and it primes twice on my gti, but tried a VW golf gti mk2 genuine pump relay and it fires up just the same, methinks the engine don't know any different?
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Local Hero
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Old Timer
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I don't know Chudd neither, but what i do know is that you can hear the GSF pump relay prime twice, yet the VW golf gti mk2 relay is silent, yet starts justs the same.
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Old Timer
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mine primes sometimes and others not.
now its not priming at all.
i'm beginning to think i need a new fuel pump
this thread here…http://www.vwgolfmk1.o…viewtopic&p=229439#229439
now its not priming at all.
i'm beginning to think i need a new fuel pump
this thread here…http://www.vwgolfmk1.o…viewtopic&p=229439#229439
1982 Non Sunroof Black 1600 GTI
2003 MKIV Golf PD150 GT TDI
2003 MKIV Golf PD150 GT TDI
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Old Timer
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..but does it still start?
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Old Timer
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start then cut out... might be using vapours in the line?, read my thread.... gonna get it checked tomorrow as time is of the esscence at the mo
1982 Non Sunroof Black 1600 GTI
2003 MKIV Golf PD150 GT TDI
2003 MKIV Golf PD150 GT TDI
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Local Hero
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Funny thing is, I have experience of 4 cars: on 2 of them, the fuel pump primed once (on ignition on but not start), for around 4 seconds, then stopped (until the starter motor turned). On the other 2, as soon as the ignition is on (not start), the fuel punp was running. No idea of the history of the relevant relays, though.
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Old Timer
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Paul, with my mk2 gti relay in, the car starts yet no noise, how strange??
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Local Hero
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golf1 said
Paul, with my mk2 gti relay in, the car starts yet no noise, how strange??
A decent fuel pump and clean fuel doesn't make any noise.
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Old Timer
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Humm.., I'm not so sure.
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Local Hero
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golf1 said
Humm.., I not so sure
Well, I have worked on plenty of Mercs with K-Jet and the fuel pump is almost silent.
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Local Hero
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Old Timer
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paul_c said
golf1 said
Humm.., I not so sure
Well, I have worked on plenty of Mercs with K-Jet and the fuel pump is almost silent.
Point taken, but in my case the GSF pump relay can clearly be heard priming twice with the car door open, yet the VW mk2 relay is silent, strangelyy the VW mk2 relay starts up just the same. As with your thinking it's very strange indeed and can't really be understood.
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Local Hero
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golf1 said
paul_c said
golf1 said
Humm.., I not so sure
Well, I have worked on plenty of Mercs with K-Jet and the fuel pump is almost silent.
Point taken, but in my case the GSF pump relay can clearly be heard priming twice with the car door open, yet the VW mk2 relay is silent, strangelyy the VW mk2 relay starts up just the same. As with your thinking it's very strange indeed and can't really be understood.
If its the same fuel pump and the same car, but a different relay, your right, its confusing. The only possible suggestion is maybe, that a sliver of rust/dirt entered the pump one day, and the next day it didn't…..
The noise can only be 2 things: cavitation within the pump, or mechanical noise eg from the bearings. The mechanicals would wear over time, not magically fix themselves….right?
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Old Timer
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Talking seconds with switch overs on relays and noise. I can't understand it, really.
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Old Timer
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Thought I would post this, I've tried a mk3 pump relay and it primes once and the engine cuts out afer 1 minute, must be something to do with the internal workings.
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Settling In
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I've got the same problem with my 1600 gti.
Car starts but cuts out more or less after a few seconds.
On turning the ignition key the pump does appear to be very noisy tho. Do you think this is due to it being past it ?
Car starts but cuts out more or less after a few seconds.
On turning the ignition key the pump does appear to be very noisy tho. Do you think this is due to it being past it ?
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Old Timer
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Pump noisy means the relay's working. Take off and inspect the fuel pump ( 5 minute job to remove pump) clean out as necessary. I checked my pump off the car and used thin 3 in one oil instead of petrol to test the flow.
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