intermitent problem

[dmtankerman]

hi there, can anyone help with the prob i am having with my 1994, turbo diesel auto.....the van is performing well under acceleration but once i am at the required speed and back of the throttle a bit to that speed i am getting what feels like the engine missing. as soon as i accelerate again or back off the throttle completly the prob goes.

also the gear box is a 4ald which seems to work perfectly except for once in overdrive lock up at around 40mph i have no kick down facitlity and it will not come out of overdrive until about 25 to 30 mph, even whilst pulling heavy up hill. is it possible these two probs are linked?

[AndyG]

1994
Is this a Bosch pumped Di with a turbo added after it left the factory
Or a smiley grill TDI Lucas EPIC electronic drive/fly by wire

[dmtankerman]

Hi there, its the TDI Lucas EPIC electronic drive/fly by wire.

[AndyG]

Try it with the EGR plug disconnected

[dmtankerman]

Try it with the EGR plug disconnected

hi andy, some time ago i posted a problem about my van and you suggested disconnecting the egr plug
well that i done and i have just give it a little run down to narbonne and back (2000miles) and yeah all is good
but i beg the question how come does this mean the valves u/s?
also my vin plate informs me the motors 62ps is this right on a turbo?.
can i put in some blue spot injectors , intercooler and maybe up the boost slightly what i really want is sustained 70mph cruising rgds,owen
94 td auto converted minibus camper photos to follow

[AndyG]

2000 miles.......a little run What's a good run

62KW = 85PS

Forget the intercooler, but by all means fit the 100PS injectors that would have been appropriate for your year of van

As for the EGR valve.............I could try and explain it, but suffice to say it's worn

[dmtankerman]

hi mate why no i/c would it not make the charge temp lower and how do i adjust the boost will i need to install psi gauge inline

[V184]

I had one how you describe, disconnect the egr & the misfire/stutter goes turned out the injection pump was completley f-cked didnt give any codes with diag tester

[dmtankerman]

the vans running too well to be injector pump 28mpg solo 27.6 toing half ton trailer

[AndyG]

hi mate why no i/c would it not make the charge temp lower and how do i adjust the boost will i need to install psi gauge inline

yes i have experience of that dont bother,i fitted an intercooler to a 1997 turbo di spec lift i had and no matter what we tried it couldnt hold a steady speed, great while accelerating but try to level off the speed and it starts hunting,we ,thats me and a turbo expert i know tried evedrything including putting some vacuum reducing items in amongst the vac pipes they have but no good,then we gave up and removed it all.