Round 25 - Now the fuel pump! Possibly!!
Round 25 - Now the fuel pump! Possibly!!
Author
Discussion

ibroker

Original Poster:

658 posts

280 months

Saturday 27th February 2016
quotequote all
Boy is this car proving to be a learning curve...

Having spent the last 3 weeks trying to resolve the pop up light, now sorted, I went to move the car today in the garage. It starts fine lasts 3/4 seconds and then just dies.

I did leave it running on the driveway 2 weeks ago and I think I may have run it out of fuel. Put some in it cranked a few times and then started and ran ok for another 10 minutes or so.

There is no initial whine of the pump when the ignition goes live, dont know on a flapper if there should be? Also I have read that running them to empty is suicide as it drags the dregs in the tank into the pump as the car has no filter before the pump? Opinions please.


mrzigazaga

18,756 posts

187 months

Saturday 27th February 2016
quotequote all
Running a Wedge or any car really on fumes is not good...Sounds like you have badgered the pump...I did it one day...i was on the motorway and i had enough to get to a garage which was about 10 miles away but then hit a bit of stop start and when i eventually got to the garage the car was already coughing and spluttering...Filled up and about a mile later she conked out and that was it...

You can put a pre-filter in..RT sells them...

https://www.google.co.uk/url?sa=t&rct=j&q=...

ibroker

Original Poster:

658 posts

280 months

Saturday 27th February 2016
quotequote all
Mark

As a man in the know. Ebay TVR fuel pump. Are they good to go?

On a side note did you fit a pod motor from that TR7 place you pointed me to, did it work?

Andy

mike various

236 posts

143 months

Saturday 27th February 2016
quotequote all
I did exactly the same when i got my wedge running when it had been stood for 12 months.
i tried flushing the tanks and put a new fuel pump in afterwards.
To stop it happening again i fitted an inline filter but one that i could see what's in there.
It was cheaper than the RT one and you should see the crap it's stopped from going into the pump !!!
In fact i must order another one. app £7.50 from memory
What i had to do was find out the id of the fuel pipe to make sure i ordered the right one.

http://www.ebay.co.uk/itm/400767657216?var=6703136...

just my two pence worth.

Mike

ibroker

Original Poster:

658 posts

280 months

Saturday 27th February 2016
quotequote all
Should I hear the pump come to life briefly when then ignition goes on or not?

mrzigazaga

18,756 posts

187 months

Saturday 27th February 2016
quotequote all
Hi Andy...Sorry I'm not sure about the Fleabay pumps as i have only ever bought the Bosch pumps not the "Bosch type"..Someone else may be able to recommend a good fuel pump....I think you are also confusing me with Marcus who did fit a pod motor from Robsport...

You should hear the pump prime if you turn on the ignition and move the flap in the AFM..It means removing the air filter...You could test the pump with a live to it..But remove the existing and only do it for a sec or two..If the pump works but not on the key then it could be the red Pektron steering module relay but more likely to be the pump.....smile

Hope this helps


Ziga

ibroker

Original Poster:

658 posts

280 months

Saturday 27th February 2016
quotequote all
mrzigazaga said:
Hi Andy...Sorry I'm not sure about the Fleabay pumps as i have only ever bought the Bosch pumps not the "Bosch type"..Someone else may be able to recommend a good fuel pump....I think you are also confusing me with Marcus who did fit a pod motor from Robsport...

You should hear the pump prime if you turn on the ignition and move the flap in the AFM..It means removing the air filter...You could test the pump with a live to it..But remove the existing and only do it for a sec or two..If the pump works but not on the key then it could be the red Pektron steering module relay but more likely to be the pump.....smile

Hope this helps


Ziga
Ziga. Thanks for the help.

So testing it with a live which I was going to do in the morning. You say "remove the existing" existing what please clarify.

Yes I have one red relay on the board, I am assuming then that they are different to the others on the board.?

Cheers

mrzigazaga

18,756 posts

187 months

Saturday 27th February 2016
quotequote all
Ooppps...Sorry for any confusion...I deleted a paragraph and pressed submit.....

Check to see if you are getting a live feed to it from the ignition with a multi-meter...Not sure what you should see though...0.5?...If not then it could be the Red relay which is different to the normal relays...You can buy them at Glimmerbros...

https://www.google.co.uk/url?sa=t&rct=j&q=...

If you are getting a feed then its the pump, If not then run a 12v live...You could ask someone to crank it and try to see if you can here it whirring...TBH..You got no chance of hearing anything....smile

Cheers

Ziga

adam quantrill

11,627 posts

264 months

Sunday 28th February 2016
quotequote all
I've never been a big believer that letting the petrol runs low allows crud into the pump - unless you drive a hearse and only corner at 5 mph. Whenever we go around a corner the entire tank contents slosh from side to side (see what happens to the fuel gauge around a roundabout.) And the crud it stirred about and will get into the pump anyway.

However if you let the pump run dry, then that's bad news, and might explain these failures a bit better.

TVRleigh_BBWR

6,553 posts

235 months

Monday 29th February 2016
quotequote all
I've found all the pump inc the Bosh ones to be very sensitive, and don't like being left, or having even the smallest crud passed though them.
I normally use a sytec pump as replacements as they do varying flow rates to match your power, plus are a fair price, not cheap but not expensive. they do pre-filters and after filters also. I always use both. works out about £200-350 for a full kit, depending on model, new houses, brackets etc.

adam quantrill

11,627 posts

264 months

Monday 29th February 2016
quotequote all
£350 is very cheap for a new house, Leigh ;^)

ibroker

Original Poster:

658 posts

280 months

Tuesday 1st March 2016
quotequote all
Sooooo

All fuses good.
Pump Good
Crank engine and power to the pump. Engine starts.
....Engine runs power dies.
Replace fuel pump relay (with new) and no power to engine on crank...
Install old relay and engine fires then dies 2/3 seconds later.
Swap relays around in block of 4 (various configurations) no go.
Back to original configuration with old relay and now WONTstart at all!! ARGHH
Fuses all good.

Come on guys, dont want to be beaten here.....

Love hate relationship going on here. I love it, IT HATES ME!!!

My relays are 2 deep and 7 wide? any ideas on an official diagram

adam quantrill

11,627 posts

264 months

Tuesday 1st March 2016
quotequote all
Maybe (probably) the relays are good but the contacts they are plugging into are shot?

Trickie Dickie

2,399 posts

256 months

Tuesday 1st March 2016
quotequote all
I have had 2 Fuel Pumps on my 400 in less than 18 months

The first one had locked completely solid in that time so can only
assume that I ran the fuel low and pulled crud into it

After the 2nd one fitted I also have then had a pre pump filter fitted
(as well as the standard post pump filter)

The first pump replacement was supplied and fitted by my garage for about £150
The 2nd required the AA who charged me £260 for just the same part!!!!!!!

Apparently the Bosch pump is the same as a Vauxhall Cavalier/Vectra if irc

I will have the part number somewhere if you want

HTH
Trickie

mrzigazaga

18,756 posts

187 months

Tuesday 1st March 2016
quotequote all
Hi mate...This might help

https://www.google.co.uk/url?sa=t&rct=j&q=...

Check all connections...Makes sure the ECU plug is on tight and clicked into place properly...Check the plug on the ballast resistor on the N/S inner wing..Carefully look at the TPS but try not to pull it about too much...Look at the yellow wire as that seems to break first....Check the movement of the flap inside the AFM...Check the thermotime switch resistance...I take it you have a fat healthy spark....Do go replacing too much at once or you will lose where you were to start with..Check the wires on the back of the relay and fuse board to make sure none have managed to get pulled out...Which doesn't take much....Do you have a solid state Fuel Pressure Reg or an adjustable one