Tamora fuel pump wiring

Tamora fuel pump wiring

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Discussion

DS1962

Original Poster:

41 posts

196 months

Tuesday 11th November 2014
quotequote all
Can anyone post a close up photo of the 6 wires and their relative positions on the white plastic connection to the fuel tank in the boot of the Tamora? I've been having fueling issues caused by this plug shorting out. It was repaired by a local TVR garage by doing away with the plug connector on the loom and just having individual wires but I suspect the wires may have been mixed up as i'm having the same issues again.
Any help would be appreciated.
Thanks
Davie

SergSC

508 posts

161 months

Tuesday 11th November 2014
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I suspect if the wires were "mixed up" you'd have trouble getting anywhere at all! wink
Can you describe the symptoms a bit more?
Did the garage do other stuff, like tune the throttle bodies? They will go out of tune quick if they are worn out.

DS1962

Original Poster:

41 posts

196 months

Wednesday 12th November 2014
quotequote all

The symptoms started initially after I parked the car up for a week and went back to it (see my previous post for the details). The car would prime the fuel pump and start but immediately die unless given plenty of throttle. It would not idle or pull cleanly from lower revs. The fault was eventually traced to a short in the white plastic connector to the fuel tank in the boot. The plastic connector was dispensed with and the 6 wires wired up individually to the remaining connection ontop of the tank inspection cap. The car ran fine for a couple of months after this modification but very similar symptoms have reappeared.

I have searched the forums and came across a blurry photo of the fuel pump/tank connection that TheHotHead posted in 2010 but the wires appear to be wired differently to mine so I'm thinking (hoping) that this may be the problem. I have changed the fuel relay,checked ignition,swapped injector wiring from bank to bank,etc but makes no difference. The latest symptoms appeared after filling up at a petrol station and restarting (correct fuel - I checked!!)

The car is not due a service and has ran well since Dom rebuilt it 5 years ago. Throttle response has always been spot on even from very low revs.

I'm looking for a photo which clearly shows where the 6 wires are positioned in relation to the 6 pins on the fuel tank connection. I don't have access to diagnostic software and TVR garages are not 'local' so trying to sort out the basics before i have to bite the (expensive) bullet of transporting it to an expert to diagnose.
Can anybody take a photo of their connection for me?
Thanks
Davie

peteA

2,680 posts

233 months

Wednesday 12th November 2014
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I know its with reference to a Sag but is there anything here that might help...

http://www.varleyhyd.com/FJ062.asp

My Tamora stranded me a year or so ago due to what turned out to be a problem with the male / female connectors for the fuel pump just above the access panel above the fuel tank. The car was recovered to HHC where I'm told the wires were 'soldered' to stop any future occurrences - I haven't looked to see what work was actually done?

How do you know the fuel pump is priming? Just asking because its common to think the noise you hear when the ignition is live is the fuel pump when its not, its the power steering pump in the engine bay.

If I get a chance later when I get home I'll see if I can get some photos for you.

Hope you get sorted!

SteveSPG

2,120 posts

201 months

Wednesday 12th November 2014
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there are 2 pumps in mine. the outer pair of wires on the connector are live and earth for each pump. the middle connectors are fuel level sender connections


i took the ali plate off mine to find the wires inside the tank were corroded, the crimps poor and not really doing their job, leading to erratic connections that has charred the underside of the connector. I replaced the lot by rewiring the fuel pumps. and bypassing the white connector entirely

if the ali plate has not been taken off, then it is worth having a look inside the tank. only takes a few minutes to take that plate off.

DS1962

Original Poster:

41 posts

196 months

Wednesday 12th November 2014
quotequote all
Thanks for the replies guys. PeteA a photo of your wiring would be much appreciated to compare to what i have at the moment. As i say, from the only photo i can find mines looks to be wired differently. SteveSPG i haven't lifted the inspection hatch yet but I think i will have to do that and check the wiring on the inside of the connection to rule that out. Frustrating as the car has been an almost daily driver since i bought it 7 years ago and I'm missing the grin factor!

peteA

2,680 posts

233 months

Wednesday 12th November 2014
quotequote all
I've taken some photos - will upload tomorrow

DS1962

Original Poster:

41 posts

196 months

Thursday 13th November 2014
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Thanks, much appreciated.

peteA

2,680 posts

233 months

Thursday 13th November 2014
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Here you go - hopefully this will help...not sure if its significant or not but my car is a 2002 early car...












DS1962

Original Poster:

41 posts

196 months

Thursday 13th November 2014
quotequote all
Thanks very much for that, unfortunately it looks like my problem lies elsewhere as your wiring looks to be the same as mine. My car is also an early 2002 model. Next step is to check the wiring inside the tank.
Thanks again for taking the time to post the photos.
Davie

peteA

2,680 posts

233 months

Thursday 13th November 2014
quotequote all
No problem Davie - hope you find the problem and get sorted. If you need anymore reference info from my car just let me know and I'll see what I can do.

Cheers

Pete