Club 80-90 Forums

Hi all im posting this as i am a complete novice to mechanics... recently i purchased a T25 Transporter 1.9 petrol wich has after 3 weeks ceased to perform it idles badly from running to high between gear changes then at junctions slows right down and stalls, after reading various information on here and from a downloaded Bentley manual i kinda getting the idea what areas i should be checking.
However here is my dilema !!! i cant find any component parts which the manual is talking about (Idle stabilisor unit, idle screw on carb,) do all cars have to have a sabilisor unit? i have loads of questions like whats this and that etc due to the dagrams or pics dont seem to reflect to my engine so if anyone can help that would be great (id like to post a pic of my engine and ask ppl to tag names of the components so that i know what i am looking at next time i have a stab in the dark repair O anyone know how to put pic on here? )

Any help ........ Please

helloo, and welcome......

firstly, you should check out our WiKi https://club8090.co.uk/wiki/Main_Page
where all manner of things technicel reside, including how to post pics on here.
secondly, this post should be in the technical pages of the forum.

ok, it was running ok, now its not..... its petrol powered ?
start with the bascis
first thing to check is the filter, which should be down under the sill just near the tank.
if that is clear ( replacement only about a quid) then check there is fuel from the pump
if so, check its getting to the carb
check the carb idle switch off solenoid ( cylindrical object about the size of you thumb with a male spade connection on the end ) it shoud have 12vdc power when ignition switched on , and stop the flow of petrol when it has no power, but wont stop it running, only tickover idle will suffer as such.





we will move this to tech.....

Thanks Steve, im just getting the hang of navigating round this site so please bare with me whilst i not only try to learn how to fix this idle problem but get to grips with where certain posts should go and most importantly where i can find them after to read ppls comment lol.
Regards
Zoli

My Idling issues turned out to be the brake vacuum hose. Lots of threads on here that reference it, here's one:

https://club8090.co.uk/forum/viewtopic.p ... 7#p7505617

Not all DG engined vans have the idle stabilisation unit.

Cheers,
Stu

Thanks Stu,
I have a look into that however i read the post that the hose was being discussed on and if i have read it right ? a perished hose will affect brakes, my brakes are fine i have no need to depress 2 or 3 times like mentioned when the hose was recommended.
Regards
Zoli

depends where the hose is damaged ......
however, you have several other pipes where a vac leak will be possible...... as well as the manifold to head gaskets.( check by spraying wd40 around them when engine running, if there is a leak it will be drawn in and revs will rise)


check the vac advance pipes to the dissy from the carb and air box.

think you are jumping along a bit here tho...
basics first,,,,,,

trying to get pic on ere of engine Grrrr lol

brakes will still work unless the servo pipe is really bad, worth checking so much going on with that carb, start with the basics like wot steve said and get back to us.

Ok i will try the basics tomorrow, thank you al for your time

Novice in need wrote:

trying to get pic on ere of engine Grrrr lol

You had too many [img]'s in there!

Tony

once the basics are in order..

it idles badly from running to high between gear changes then at junctions slows right down and stalls,

I need to know if that's when the engine is up to working temp?... or when it's warming up?

what's it like starting from cold and ticking over.?

The start up is fine its ticks over nicely, when engine gets warm thats when the cutting out and general high reving/dying down (irratic) begins!
I have started her up and sprayed WD40 around the pipes(Dizzy to back carb and brake hose leading to bulk head, connected air intake pipe thou )apart from that there is NO other noticeable increase in revs to indicate a air leak that i can ascertain and van still stalls when driven at junctions.

Thanks Tony for helping out with Pic.......

I have noticed the black bit (looks like a hat turned on its side- like the dizzy on the ignition distributer)by the carb is loose i can pull it from the carb body about 1 inch or so ....is that normal?

Novice in need wrote: Its starts fine and as it warms up the revs increase and stay high

fine, that's quite normal, until the throttle is touched then the fast idle cam drops the rpm to the next step down, as the engine warms the cam drops the revs even further until the throttle stop rests on the idle speed screw

however they sometimes drop and just dies thats when stationary outside my house.

that's the fast idle cam coming off too soon, or a weak mixture.
It can also indicate over choking
to check over choking , look at the flap covering the carb throat, when cold it should be closed with a slight gap, as the engine warms it should open fully.

Initially it was running high after warm up and when up to operating temp but has since a few days ago started to stall.

sounds to me like a weak mixture due to an air leak...
there a black plastic unit on the carb called the choke pull down unit it has a black plastic pipe attached to it and the carb body.
pull the pipe off the carb body and suck, if you can keep on sucking air the unit has failed and letting air into the engine

Kev the Rev is a star.......

THANK YOU ALL HOWEVER........... as with a combined effort the problem appears to be the Choke Pull Down Unit ..as iv been sucking on it for ages cant believe the inuendo there Lol
Regards
Il write with the final conclusion when refitted!!!!
Zoli

lets not count our chickens just yet

oh and clean the carb out while it's off..