Frankenstiens creation...

[Cypriotgeeza]

Getting it in at work friday to do the clutch but i still have the idling problem.. Now it wont idle and when i keep the revs at about 1,500rpm it keeps fluctuating from that to around 2,000rpm on its own..

im thinking either maybe tps like Rav said---but i never took it off?
or maybe a breather sucking in air?

has anyone come across this before?

[Rav335uk]

How long was the engine sitting for?
And when you turned it over, did you leave it to idle on its own??

[Cypriotgeeza]

Engine was sitting for about a month, and yes yesterday when i fired it up it was idling ok'ish, just whenever i touched the throttle it would cut out

[Rav335uk]

TPS or take the battery off overnight, connect up and start the engine, leave it to idle without touching the throttle for about 10 mins, IIRC, the ecu needs to "Learn" again.

[Cypriotgeeza]

problem is it starts but then cuts out straight away, reason why im thinking its a dodgy breather or maybe my idle control valve is faulty? my i.s icv valve looks the same, i might jus put it on to see if it makes any difference..

[Rav335uk]

Try the air leak concept, then the tps, if that fails, try my method.

[Cypriotgeeza]

will do mate! thanx

[Cypriotgeeza]

i also forgot to mention that i went and done a bit of shopping the other day at my local E30 parts place -->"E30partz.co.uk" and picked these up :

--2 Good wings
--A 325i front cross member
--An E34 washer bottle
--An E34 airbox
--A Radiator bracket as mine was held on my cable ties

[Cypriotgeeza]

Hey guys, as you all know im having problems with the way my cars running and thought id record it so maybe someone could shed some light on what the problem is

one of my mates said his e30 used to make the same noise and it turned out to be a snapped Exhaust manifold stud which was sucking in air into the engine..i know none of mine snapped but i do know i put the manifold gasket in upside down, could this be the problem?

Any help would be great peeps!

Heres the vid:
http://s81.photobucket.com/albums/j215/ ... V03413.mp4

[Cypriotgeeza]

ok so i just watched this and he said it was his ECU

[zaust]

have you rest the tps correctly ?

[Rav335uk]

Yo sure your TPS isn't knackered???
And get that Cone filter OFF!!!!!!. they're shit, all you'll be doing is suking in Hot air of the exhaust manifold. Put the origional E34 on back on , it's shieled to protect it from heat.

[Cypriotgeeza]

Yep i know Rav i tried to fit the airbox i bought but it wouldnt fit because need to cut the coil pack brackets off due to the car originally being a iS and i cant do that untill i get it in at work again..

i did what you said with the tps but there was only one click when i just opened the throttle..there was no second click when it was fully opened maybe thats knackered?

[Rav335uk]

TPS then, should have 2 clicks iirc, one at WOT and the other when the throttle position is slightly engaged.

[Cypriotgeeza]

yep mine definantly only has one click when it is slightly engaged..no matter how i adjusted it there was no second click maybe its time to look for a TPS?

[Rav335uk]

I'm sure you can check it via volt meter.
Put it up in the tech section, Will and Mr Moooore are on there now.

[Cypriotgeeza]

i have a multimeter at work so i will bring it home and try tomorrow..

will do that now

[Cypriotgeeza]

a lot of help that was haha i guess its the old fashioned brake cleaner method

[Rav335uk]

What, no good, or did you get directed to the voltmeter?

[Cypriotgeeza]

i think we got lost in translation mate i just looked in my haynes manual again and it shows how to adjust the tps with the voltmeter...only problem is it says "if the readings are incorrect adjust to correct settings" which it does not tell you what the actual reading should be

[Rav335uk]

Haynes does lack some vital info

[Cypriotgeeza]

bigtime! i will do some more investigating tomorrow or sunday and let you guys know

[zaust]

Mate I had a think about this, The tps can only give you a flat spot and cause incorrect reving, It would not make your engine hunt like that. Give me 5 I want to do a cross ref on something and confer with a mate I will pm you.

[Cypriotgeeza]

ok guys after a NEW TPS and a bit more investigating im STILL having the same problem

getting quite annoyed now as i cant find an air leak and i cant figure out what it is..

Im thinking now maybe its a faulty "blue temp sensor" or maybe a dodgy earth or something? really am running low on ideas or motivation tbh

Wondering wether to take it to a BMW expert and asking him to take a look?

[Rav335uk]

Just got back from Holiday, have you changed the Blue sensor?

[charlE30]

Try a know good AFM meter, my other halfs tourer had similiar problems and changing the AFM resolved it completely

[Cypriotgeeza]

that was my next two things i thought about changing..just getting annoyed with the money being thrown at it atm..if it fixes it i wouldnt mind so much but nothing is working

[charlE30]

Where abouts in the country are you? if your local to me you could try mine to see if that cures it

[leeparkes]

iirc he's down London way

[Cypriotgeeza]

Ok guys slight update..I bought a good AFM and tried it today and for once the revs dropped to around the 1000rpm mark which was a good sign..now ONLY when i rev it past 2000rpm it starts doing what it does in the video i posted..

so i started messing around with things (again) and if i disconnect the ICV it makes no difference to the revs and i can rev it up perfectly which makes me near certain about it not having an air leak..

so i changed it back to the (known good) second hand one i bought recently and it does the same thing..

i have 12v to both the outer pins of the connector which goes to the ICV...

im wondering wether to fork out on a brand new one now? really am frustratingly close to figuring this out!!

[craigieeb]

I'm just gonna throw this one in the air...

are the connections the same on the T.P.S and the ICV...................??

[Cypriotgeeza]

both have three pins..

[Cypriotgeeza]

I'm just gonna throw this one in the air...

are the connections the same on the T.P.S and the ICV...................??

This made me think..and i realised that they do have exactly the same shape and amount of pins so i swapped them around and PRESTO its fixed now! i cant believe it was prob just that the whole time! I feel like such an idiot!

Jus need to get it taxed and insured and its ready to roll!!

[leeparkes]

[Cypriotgeeza]

its a bitter sweet victory as i feel like a proper muppet now haha least i have a few spare parts