200 idle probs - Page 2

crisarc · 08-02-11, 08:08 PM

right its all shit again, wont idle below 1200rpm, it dies, then, raised the idle and its hunting, disconnect the aav, does not hunt but lifting the throttle on overrun and it feels like its cutting out,
maf , lambda??, its shunting when i drive, tearing me hair out
any ideas

crisarc · 08-02-11, 08:14 PM

or could it be the throttle switch, as it worsened when i screwed out the damper to increase the idle speed,,,,,,petrol and a match is waiting

20vcqdriver · 09-02-11, 08:29 AM

Quote:

Originally Posted by crisarc

or could it be the throttle switch, as it worsened when i screwed out the damper to increase the idle speed,,,,,,petrol and a match are waiting

I found this on mine you need to have the idle switch made for the ECU to go into idle mode. Tried to get mine to idle at 1000rpm as exhaust note is better

but it wasn't happy staying there and would not be consistent so went back to 800rpm again.
How's your Lambda

MAF fault unlikely at idle (so long as idle switch working) as it doesn't need it. Know this as during rebuild I used to reverse car in and out the garage on idle with all the intake before the turbo removed and MAF disconnected. If it runs OK apart from idle MAF should be, but not necessarily, healthy.
Are you getting a supply to the idle stabiliser...

Phil Payne · 09-02-11, 08:39 AM

Quote:

Originally Posted by crisarc

.. , does not hunt but lifting the throttle on overrun and it feels like its cutting out,

Check control pressure.

crisarc · 09-02-11, 08:20 PM

messing with the idle switch has just about cured it, i am going to re solder the connections on the inside of the throttle switch,
phil , do you mean fuel pressure?
the maf and lambda are both 4yrs + and 40k minimum, so they are next, on the list, ,,where is a good source?
again thanks for the input

crisarc · 07-03-11, 06:50 PM

resoldered connections, helped , but a new lambda[ces] for 70 squids , car has never run better

BIGGYIN · 07-03-11, 08:36 PM

08-02-11, 08:08 PM	#11
crisarc Senior Member Classic Audi Club Member Join Date: Jul 2007 Location: shrewsbury Posts: 1,172	right its all shit again, wont idle below 1200rpm, it dies, then, raised the idle and its hunting, disconnect the aav, does not hunt but lifting the throttle on overrun and it feels like its cutting out, maf , lambda??, its shunting when i drive, tearing me hair out any ideas __________________

08-02-11, 08:14 PM	#12
crisarc Senior Member Classic Audi Club Member Join Date: Jul 2007 Location: shrewsbury Posts: 1,172	or could it be the throttle switch, as it worsened when i screwed out the damper to increase the idle speed,,,,,,petrol and a match is waiting __________________

09-02-11, 08:20 PM	#15
crisarc Senior Member Classic Audi Club Member Join Date: Jul 2007 Location: shrewsbury Posts: 1,172	messing with the idle switch has just about cured it, i am going to re solder the connections on the inside of the throttle switch, phil , do you mean fuel pressure? the maf and lambda are both 4yrs + and 40k minimum, so they are next, on the list, ,,where is a good source? again thanks for the input __________________

07-03-11, 06:50 PM	#16
crisarc Senior Member Classic Audi Club Member Join Date: Jul 2007 Location: shrewsbury Posts: 1,172	resoldered connections, helped , but a new lambda[ces] for 70 squids , car has never run better __________________

07-03-11, 08:36 PM	#17
BIGGYIN 4 ring whore! Classic Audi Club Member Join Date: Mar 2009 Location: Merseyside Posts: 7,976	__________________ q90 B2 Type 85 - q90 B2 Type 85-PROJECT-ABY 20vt KARL. Injection is nice but I'd rather be blown