No power to petrol pump
No power to petrol pump
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Discussion

honestfreddie

Original Poster:

219 posts

276 months

Monday 21st April 2003
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Have now owned my Chimaera for a full 10 days without trouble, well that was until last night!

Went for a great day out with the Devon and Cornwall tvrcc, got back put the car in the garage and parked to close to the wall. Being a large man I was unable to get out, so easy; start the car and re-park it.. NO chance

The car was turning over but would not start. It took a while but then I realised there was none of the normal fuel pump whine that you get when you turn the ignition on. After removing the roof to aid my escape I checked the fuses and all seems OK there. Im not a mechanical minded person but is there some thing else I can check??

mongoose

4,360 posts

277 months

Monday 21st April 2003
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cant be sure from memory,but i dont think i can always hear the pump on mine.i think if you havent turned off ignition and immobilised then you wont necesarily hear the pump run on attempt to re-start.was it just a hot start problem?or was it difficulty in trying to re start after turning off whilst engine is still in fast idle mode(like choke).this is a well known problem to re-start in these circumstances and usually takes 10mins or so to leave until ok.if so then you might want to try to start it after its been left for some time to cool down completely.the only way of knowing for sure if you have power to the pump is to measure power at the pump terminals itself.-hope this helps-mv

david beer

3,982 posts

289 months

Monday 21st April 2003
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Check the relay on the ECU loom,its the silver metal one, mine somehow wiggled(tech term) itself out a bit,push back in alls fine. Its a special one so dont replace with a normal one.

gemini

11,352 posts

286 months

Monday 21st April 2003
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we had this last week on a TVR run - 500 chimaear stopped!

took off ECU connectors and reconnected - wey hey - off she went

either that or immobilser isnt set?

Trefor

14,717 posts

305 months

Monday 21st April 2003
quotequote all
If it's not the fuse/relay then check the wire is connected to the pump. It's located on the chassis insie the LH rear wheel. Can't think why BMW/Audi don't use the same quality of wiring ...

T/.

honestfreddie

Original Poster:

219 posts

276 months

Sunday 27th April 2003
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Sorry it's taken me so long to get back to you all, Thanks for all the tips, Im back home again next week so I will being having a look and will post my findings, Once again thanks.

>> Edited by honestfreddie on Sunday 27th April 12:33

blue streak

28 posts

279 months

Monday 28th April 2003
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If it's not the fuse or ECU connection try taking off the spade connectors on the fuel pump, it's tucked under the car just forward of the diff on the left hand side. They are just standard spade connectors (Not waterproof - typical TVR) they get wet corrode and stop connecting. Just clean them up and put them back. Worked for me!

R&J

906 posts

278 months

Monday 28th April 2003
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Similar problem with mine.
The connector had come off of the pump, it can be reached by laying on your back with your arm stretching under the car just in front of the passenger side rear wheel. (always carry a mat in the car now just incase).

Rich

bob the planner

4,695 posts

291 months

Sunday 4th May 2003
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Bu$$er ! Just about to join Surrey Run 4 for breakfast and similar symptoms. I wiggled and then removed the solenoid, replaced a couple of fuses, checked the spade connectors on the fuel pump and still nothing One very sad PHer who had to go without brekkie

I am employing a PHer with some test equipment to have a look and see if we can diagnose the problem (Thanks Denny). I will let you know if we find the problem.

Bob

bob the planner

4,695 posts

291 months

Monday 5th May 2003
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I now know the source of the problem. The fuel pump relay is fcuked (Thanks for finding it Denny). I now have more parts to refit to the car than I have ever removed before but the car will be ready for Back Home. All I need to do now is source a 5 pin 30A relay.

Bob

DennisTheMenace

15,605 posts

290 months

Monday 5th May 2003
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No probs Bob (:mumbles: bloody v8 engined plastic bathtub ) try and get a 12v supply to the fuel pump and see if it spins into life , Black wire with a yellow trace if that doesnt work try a continuity test to check the earth to the chassis , if you still have no luck stop swear at the car and have a fag , on bob the planners tiv it turned out to be one of the silver relays in the loom to the ECU , i thought it was the alarm/immobiliser playing up as it looked like it had been thrown in at 50 paces by a monkey

Dan M

278 posts

305 months

Tuesday 6th May 2003
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I found the easiest way to get the special Bosch 5 pin relay is to go to a TVR dealer. They usually stock them at about £10.

My local Bosch agent was dearer and it was not in stock.