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[mijfife]

Thanks guys, will try paperclip test tomorrow and report back. I've checked all breathers and there inlet pipes, all is clear. One of mates suggested that it sounded like it was injector related. I'm going to change the o rings (really should have done that when I fitted injectors and try an injector cleaner as well.
next progress report tomorrow  

cheers jim

[Markie]

Looking forward to it Jim, dont worry you will get there - you`ve done a magnificent job already  

[Craig_R]

make 100 % sure the throttle body is nice and clean and that nasty little tiny small breather hole in the throttle body is clean as it will make a difference if its blocked or alittle clogged.

Do you have the same problem for high revs on petrol as on GAS to my knowlage things appear on GAS before petrol.

The MOT you asked about YEP you can put in through on GAS but its not recomemded as its best to have it pass on petrol I read it somewhere online ill have to dig out the link if i can find it

Craig

[Taxi_Driver]

The MOT you asked about YEP you can put in through on GAS but its not recomemded as its best to have it pass on petrol I read it somewhere online ill have to dig out the link if i can find it

Craig

MOT on lpg doesnt really matter.....ive had my 3 lpg cars tested while running on lpg.....mot station just lowers the figures when testing it.....all have passed....with flying colours   .....in fact according to the figures...on the printouts...running on lpg when the do the test...they have passed easily  

[mijfife]

This morning, I did the paperclip test but I'm getting some weird readings. My EMl flashes 10 times before giving some other codes. If I ignore the 10, I did get 1 then 3 which equates to the lambda sensor i think. I'll wait until I replace the lpg lambda this afternoon and try the test again.
I also changed the injector assembly for my original one (still old seals as Vx cant get them till Tuesday  )  and it made no difference. I tried disconnecting the idle control valve with the car running and the idle smoothed out perfectly! reconnected it and it starts fluctuating again. All in all, a bit of a weird day in the garage, any ideas folks  

Cheers Jim  

[nixoro]

This morning, I did the paperclip test but I'm getting some weird readings. My EMl flashes 10 times before giving some other codes. If I ignore the 10, I did get 1 then 3 which equates to the lambda sensor i think. I'll wait until I replace the lpg lambda this afternoon and try the test again.
I also changed the injector assembly for my original one (still old seals as Vx cant get them till Tuesday  )  and it made no difference. I tried disconnecting the idle control valve with the car running and the idle smoothed out perfectly! reconnected it and it starts fluctuating again. All in all, a bit of a weird day in the garage, any ideas folks  

Cheers Jim  

The ten flashes with mine result to a 0 does it flash ten times after giving the code aswell only sounds like your car has a similar ecu (simtec 56.5) to mine which uses the P codes for example 0130 which is for the lambda sensor.

[mijfife]

Thanks nixoro, sounds like mine is on P codes, that would then make the code flashes make sense. I'll connect the new lambda when it arrives this afternoon, do the reset and try again.

Cheers Jim

[nixoro]

Thanks nixoro, sounds like mine is on P codes, that would then make the code flashes make sense. I'll connect the new lambda when it arrives this afternoon, do the reset and try again.

Cheers Jim

Have you managed to get your hands on a code reader as the codes will clear after 20 good starts as far as I'm aware.

HTH

[Markie]

source a known good icv and see if this sorts the issue..

[mijfife]

Okay guys, I fitted my new lambda for the lpg so that side of things is fine. Tried another ICV that I borrowed from the breakers, still an unknown quantity but no difference to the fluctuating idle. I refitted one of my ones that I had soaking in carb cleaner all afternoon but still no joy. both of my original ICV's look very clean internally anyway.
Next up was the paperclip test. It only worked with the ignition on and the car not running. codes were as follows: 0130 (Oxygen Sensor?)
                0505 (haven't got a clue?)
                0110 (Intake air sensor?)
                0100 (immobiliser control unit?)
I tried resetting the eml by turning the ignition on and off 30 times as per the link on the paperclip FAQ but nothing happenend. Should this be done with the paperclip in or out?

To reiterate, the car starts great, runs fine until warmed up when the idle starts fluctuating. Disconnect the idle control valve and the car now cuts out. The idle speed is perfect on lpg.
Any thoughts??

Cheers Jim
                  

[Markie]

Kind of stumped, but thinking out aloud......

Idle fine on lpg but lumpy idle of fuel.......so what does the LPG not use the fuel does use......whats the idle bypassing on lpg..... :-/

[mijfife]

That's what I've been trying to figure out! The only thing I can come up with is the petrol injectors but as I changed them over this morning, I don't think it's related to that either. Also, the idle is fine when the car is cold....

Cheers Jim

[CaptainZok]

Could this be something to do with the lambda sensor?
Wonder if theres a way to tell when the sensors switch from open loop to closed loop and therefore see if thats when the idle falters.

[Taxi_Driver]

Its usually the other way around!! LPG will find fault with an engine that petrol doesnt......Only thing i can come up with is possibly an air leak.....lpg may be running rich a bit.....so with the extra air...it doesnt notice.... :-/

Those codes you have may be cause of the engine change or be old ones......be good if you could reset them and see which ones come back  

[Martin_1962]

THis sounds like injectors, shove redex ect through them.

If fine on gas at least not serious