Bosch fuel pump

[vitesse]

Anybody got a decent un-rubber covered fuel pump they don't want & are prepared to sell at a sensible price ,please?

 

[AndrewCS]

This the one ... https://www.boschautoparts.com/en/auto/fuel-pumps/fuel-pumps?partId=69458 ?

Also found on Saab and Volvo, less scene tax perhaps []

 

[robwright]

I still have the one removed from my turbo before the last mods.

 

[vitesse]

Have sent PM,Rob.

 

[vitesse]

Have sent further PM,Rob.

 

[Waylander]

This will do the job,

https://www.ebay.co.uk/it...-FUEL-PUM/263975756203

 

[robwright]

I did reply mate. Don’t know why you didn’t get it? Message me on my number in the signature.

 

[vitesse]

Thanks for the reference,Waylander-since then I've spoken with John at Unit 11 Porsche who I know well & has done the awkward jobs for me on my wife's car(clutch,engine mounts) & told him the symptoms ,what I'd checked etc & he thought it must be an electrical fault & only a rolling road session would help to fully diagnose.
I sort of agree so have shelved the new pump for now-funnily on leaving the PCGB track day on Friday late pm,it went round the clock through the gears but then returned to the blessed 4500 rev limit once hot,so after consulting my Bosch Fuel injection manual,my conclusions initially are to check the coil(DME rev limit comes from its signal),coil wiring(possible break opens up when hot ) & DME connection(s) before swapping out the DME from my wife's car to see if there is any difference.
Rob-a bit more info for your sake too.[][8|][&o]

 

[944Turbo]

From memory, is 4500 the point at which the AFM is wide open and swaps to look up tables - If I am remembering correctly could it be related? maybe an AFM or throttle position sensor issue?
Tony

 

[blade7]

When I had an idle issue I disconnected the TPS and the issue went away, suggests the look up tables work from idle up.

 

[vitesse]

Tony,Paul -thanks for suggestions of where to go-the car is the red 924S in my avator-so doesn't have a TPS as far as I am aware-I've had the Throttle switch off & reset it using a multimeter exactly as Clarkes garage which is far better than my Haynes 944 manual.
At present have discounted the AFM because below 4500rpm,car goes very well with no problems & settles back to even idle once at rest.
Have dug out a spare engine temperature sensor (Bosch plug type) & spare coil,plus made a note of all appropriate wire colours ready to check out the critical connections to the DME plug,prior to swapping components.Going a bit into uncharted territory for me going forward.
Plus point is that I can drive it at motorway speeds still as long as in 5th gear[]

 

[vitesse]

Have bought a new engine temperature sensor for 10.50 Free postage & fitted it yesterday-its resistance values are exactly as spec so shall see if it solves the Rev limit problem this weekend-this weather doesn't allow much fiddling otherwise.

 

[blade7]

Good luck, I'll be quite surprised if it is the temp sensor though.

 

[vitesse]

Paul,so will I but at £10.50 it is worth a punt.
Current thoughts are:-the problem appears totally temperature related so unless the AFM tracks get hot enough to give funny signals I am discounting it being faulty for the present but- I haven't checked it yet cold & hot for lack of time & the weather.
I still haven't checked the DME connector unnconnected for the same reasons & so far haven't found any info that pinpoints the problem,even my Bosch manual doesn't address this.Most technical help relates to cold start,idle issues or uneven running problems associated with injectors-help!