TJ101 Posted August 7, 2005 Share Posted August 7, 2005 Sorry guys,, if i have messed this up,, but copy of the question i asked on the dark side !, wanted to kept it going ,, just in case it goes walkie overnight,, and "NO" its not cured as yet,,, (hope i dod not get deleted by the mods !! ) Regards Tim ---------------------------------------------------------------------------------------------------------------------------------------------------------- Hi All, Have a RR 3.5 efi in a series, before I start pulling to bits, have a running problem, Start & runs really well,but within a minute or so,will misfire and start to be reluctant to pick up on the revs, until after 2-3 mins will refuse to pick up at all,then after 3-4 mins will be a so & so to even start, Leave for a couple of hours to cool??, will then will do all again, start fine etc Any ideas when to start looking would be appreciated Regards Tim Post Extras: fridgefreezer (Secret Chav!!) 08/05/05 01:14 AM Re: 3.5 EFi Running trouble,,ideas please [re: TJ101] Reply It could be... anything! More info required if you have it. Are you still using the ignition amplifier module? Does it seem excessively rich or lean when the problem ocurrs? Have you changed anything recently? You know the little Squirt's right! Post Extras: TJ101 (enthusiast) 08/05/05 09:13 AM Re: 3.5 EFi Running trouble,,ideas please [re: fridgefreezer] Edit Reply Hi Fridge Thanks for the reply,,it a 1958 series body, with RR running gear, took it in px for my Defender Tdi, as a non runner, so do not know what has been done to it, and not looked at yet, so not a lot of info re amp module etc, All I know , is go to it now, and will start fine, not rich/lean etc, pick up on the throttle ok,,then as soon as she warms ( minute or so), will lose throttle response and start spluttering, getting worst until no throttle at all (3 mins) Think I will start with the basis's first (cap/leads/timing) before the airflow/ ecu etc Regards Tim Post Extras: Hybrid_from_Hell (Cat Waxoyler Extraordinaire) 08/05/05 07:18 PM Re: 3.5 EFi Running trouble,,ideas please [re: TJ101] Reply Fuel pressure (should be 28-30psi when running or stationary), Coil, amplifier and fuel filter blockage, earths from ECU Harness, PRV are the 1st ports of call Nige If I say anything, and there's 2 ways of taking it, if one way annoys you then I meant the other Post Extras: fridgefreezer (Secret Chav!!) 08/06/05 01:45 AM Re: 3.5 EFi Running trouble,,ideas please [re: Hybrid_from_Hell] Reply My #1 suspect would be the coolant temperature sensor. You know the little Squirt's right! Post Extras: jwriyadh (Member) 08/06/05 01:49 AM Re: 3.5 EFi Running trouble,,ideas please [re: Hybrid_from_Hell] Reply Define the EFi a bit more, flapper or Hotwire. Don't look for problems anywhere, cut down the suspect area. Run from cold for 3/4 mins and it won't start. Easiest check is have you got a big fat spark? No, check ignition items. Check fuel pressure with an old oil gauge. Pressure at right level, 35-36 psi engine still, drops to 31-32 if engine idling. Fuel pressure OK, if still not starting check the plugs, wet or dry? The checks above have narrowed down the search area. jw 1978 2.25 Lightweight 1997 V8 Defender 1998 V8 Discovery Post Extras: TJ101 (enthusiast) 08/06/05 11:54 PM Re: 3.5 EFi Running trouble,,ideas please [re: jwriyadh] Edit Reply Thanks all, Tried the temp switch, seams to improve it a wee bit ? maybe, tried it down the road, got 50 yards,then died !!, will have another look Monday,, When you say flapper, presume you mean the airflow meter flap ??,,(if so,, yes ,, Flapper) spark is good cold & hot,, fuel pressure next to check Regards Tim Post Extras: jwriyadh (Member) 08/07/05 01:18 AM Re: 3.5 EFi Running trouble,,ideas please [re: TJ101] Reply Magic, you're halfway there. Good fat spark at any time whether it will start or not means ignition can be ignored for the moment. Flapper system, remove fuel feed to the ninth injector on OS of the plenum, fit oil pressure gauge. Start from cold and run until it dies or seriously messes about. If the fuel pressure dies (drops below 32ish) during this period you need to be looking at fuel pump/pump power supply/filter/ anything that stops fuel arriving at the injectors. If fuel pressure does not droop , stays constant around 32-37 then you should be looking at whether injectors are working,are plugs wet at this point or dry? Too much fuel or not enough. A dwell meter across the two wires to an injector will show whether ECU is driving injectors, voltmeter will show injectors getting power. jw jw 1978 2.25 Lightweight 1997 V8 Defender 1998 V8 Discovery Post Extras: ---------------------------------------------------------------------------------------------------------------------------------------------------------- Quote Link to comment Share on other sites More sharing options...
TJ101 Posted August 8, 2005 Author Share Posted August 8, 2005 Just out of intrest,,, Job cured,, bust fuel pickup pipe in the tank !! now all nice again Tim Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted August 8, 2005 Share Posted August 8, 2005 was that a lucky find, or was fuel pressure poor ? Just curious ! Happy bunny now then ! Nige Quote Link to comment Share on other sites More sharing options...
TJ101 Posted August 8, 2005 Author Share Posted August 8, 2005 Nige yep,, poor pressure,, thanks for the help,, Regards Tim Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted August 8, 2005 Share Posted August 8, 2005 No worries, glad to hear its sorted......... IF your on BroadBand, PM me your e-mail and I'll send you something you'll find useful......... Nige Quote Link to comment Share on other sites More sharing options...
TJ101 Posted August 8, 2005 Author Share Posted August 8, 2005 Nige,,, You have mail,, Many thanks Quote Link to comment Share on other sites More sharing options...
Les Brock Posted August 8, 2005 Share Posted August 8, 2005 Blimey Nige, I did'nt know you could send WD by broadband....you learn something new on these forums everyday Not helping am I ? Quote Link to comment Share on other sites More sharing options...
TJ101 Posted August 8, 2005 Author Share Posted August 8, 2005 Thanks Nige,, will forward to Mark, the new owner of the hybrid,, sure he will find it good bedtime reading !! surpose we could send Les a couple of squirts ,, help him with his smelly diesel head, next time it has to come off!!! Quote Link to comment Share on other sites More sharing options...
bishbosh Posted August 9, 2005 Share Posted August 9, 2005 Blimey Nige,I did'nt know you could send WD by broadband....you learn something new on these forums everyday   Not helping am I ? You having a laff Lesmond....? I seem to remember you need a little more than WD40 to kepp your motor moving..... Quote Link to comment Share on other sites More sharing options...
Les Brock Posted August 9, 2005 Share Posted August 9, 2005 Errr....yep Towtruck, forklift or JCB in no paticular order..... or as the last resort a skip truck Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted August 9, 2005 Share Posted August 9, 2005 [southern Yank Accent on] ah Looove tha smella WD40 in the Mornin' [/southern yank accent off] Les, Its a V8 thing - you wouldn't undertand it Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.