obd2 pig to start when warm

[Eat this 2]

idle is a bit erratic but it never stalls i know my plugs r iffy (being done this week) and the fuellin is probably poor

it catches fine but revs drop to 2-300 rpm sometimes it comes back upto 600 and idles but usually cuts out unless u give it a little throttle

the cam sensor has been cleaned could realy do with this sortin for saturday as its being mapped then

[mightyvr6 0]

blue temp sensor?

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wel try it we were lookin at the 3 temp sensors next to eachother

[mightyvr6 0]

have u vag-commed it?

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nope no access to it

[petervr6 0]

i have the same prob when its warm its a pig to start ive changed the blue temp sen bu still the same?

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any other ideas??

[silverline 0]

i have the same prob, had it on vag com and it came out with nothing. although they did say the throttle butterfly is 10 degrees too far open at idle or something? they suggested cleaning the isv but guess you cant do that. the throttle on mine needs setting up to which i dont think helps.

it could be the engine speed sensor on yours?

[stockers 1]

i was told if its hard to start when warm could be gasket/head gasket problems

just thought i would add a little christmas cheer

[petervr6 0]

na mine was done bout 3months ago

[silverline 0]

long starts when warm can some times be caused by loss of compression ie past the rings etc, but knowing the vr's are strong in that area i doubt that would be a prob. you could always try a compression test to make sure?

[Eat this 2]

long starts when warm can some times be caused by loss of compression ie past the rings etc' date=' but knowing the vr's are strong in that area i doubt that would be a prob. you could always try a compression test to make sure?

[/quote']

iv never had a compression test but im 100% sure my engines a good un !lol

i think iv fixed the problem guys gave the throttl;e body a b;loody good squirt with carb cleaner now starts every time

[silverline 0]

i ve never come across a car thats so sensitive to a dirty throttle body than a vr!

at least its an easy fix. i really should do something with mine, after 93k miles i think it could do with it!

[Eat this 2]

silver i had an 8v cav sri b4 the vr and that was a very common fault

[FishWick 21]

If OBD2s are struggling with starting and have poor idling, a VAG-COM scan will diagnose the stepper motor in the throttle. They sometimes go, meaning a chunky bill of

[Eat this 2]

mine went on vag com with no errors

and iv deffo fixed it woooooot now it runs sweet as a nut and pulls all the way up the tacho

[petervr6 0]

so would it be worth me changing the fpr then

[Eat this 2]

it cant hurt have you cleaned your tb though and have u tried reseting it??

[petervr6 0]

havent cleaned it na what doe you mean reseting it.

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to reset the tb u have to open the drivers dorr (leave it open) then turn the key to ignition without startin the car leave it like this go round to the engine bay and youll hear a high pitch buzzin noise when this stops (usually 10-20 secs but can be upto 2 mins iirc) start the car thats it

[petervr6 0]

open the bonnet first then do it.

[FishWick 21]

You can also force a tb reset using VAG-COM's basic settings. It adjusts itself everytime you turn the ignition on anyway, but to 'harmonise' the tb to the ECU, use VAG-COM.

[silverline 0]

to reset the tb u have to open the drivers dorr (leave it open) then turn the key to ignition without startin the car leave it like this go round to the engine bay and youll hear a high pitch buzzin noise when this stops (usually 10-20 secs but can be upto 2 mins iirc) start the car thats it

thats only for obd2 isnt it? mines an obd1 so i guess it can only be done by vag com?

[Eat this 2]

to reset the tb u have to open the drivers dorr (leave it open) then turn the key to ignition without startin the car leave it like this go round to the engine bay and youll hear a high pitch buzzin noise when this stops (usually 10-20 secs but can be upto 2 mins iirc) start the car thats it

thats only for obd2 isnt it? mines an obd1 so i guess it can only be done by vag com?

mine is obd2 i dont kno about obd1 sorry u can always try it though