ack-ack Posted February 25, 2015 Report Share Posted February 25, 2015 My 1995 2l audi is messing about. When changing gear the revs bounce up about 200rpm and take a few seconds to fall back. This means very slow gear changes otherwise they are too jerky. I notice slso coming off the throttle the revs stay up for a few seconds before dying back slower than they should. Ive replaced the idle speed valve but its still doing it. It is doing my head in. Any ideas gents? Ta Quote Link to comment Share on other sites More sharing options...
Paddy Galore! Posted February 25, 2015 Report Share Posted February 25, 2015 i had something similar happen to my 2.3, it stopped after I cleaned the butterfly valve thing in the throttle body, does it race at all on starting? Quote Link to comment Share on other sites More sharing options...
ack-ack Posted February 25, 2015 Author Report Share Posted February 25, 2015 i had something similar happen to my 2.3, it stopped after I cleaned the butterfly valve thing in the throttle body, does it race at all on starting? No, its fine. It splutters a bit standing at idle every couple of minute but soon regains its composure. I changed the lambada sensor as well. Quote Link to comment Share on other sites More sharing options...
islandgun Posted February 25, 2015 Report Share Posted February 25, 2015 Err could it be the agency Quote Link to comment Share on other sites More sharing options...
Paddy Galore! Posted February 25, 2015 Report Share Posted February 25, 2015 (edited) what about a temperature sensor? that can screw with mixture settings my caddy had this problem but the symptoms were slightly different. you need a code read young man actually, what you really need is a Suzuki fr 80 2 stroke crunchy, seven whole horse power of wobbly speed, Edited February 25, 2015 by Paddy Galore! Quote Link to comment Share on other sites More sharing options...
Borderhunter22 Posted February 25, 2015 Report Share Posted February 25, 2015 Fuel filter? Quote Link to comment Share on other sites More sharing options...
ack-ack Posted February 25, 2015 Author Report Share Posted February 25, 2015 Fuel filter? Should have been done during the service but nice as those boys are, they are quite hopeless at times. I will take it for a plug in and go from there. Cheers Quote Link to comment Share on other sites More sharing options...
Lord Geordie Posted February 26, 2015 Report Share Posted February 26, 2015 Err could it be the agency :lol: Quote Link to comment Share on other sites More sharing options...
Mentalmac Posted February 26, 2015 Report Share Posted February 26, 2015 Intake leak? MAF sensor related? Quote Link to comment Share on other sites More sharing options...
andypaint Posted February 26, 2015 Report Share Posted February 26, 2015 Or throttle position sensor by the acceleration pedalet probably got muck and grit in it. Quote Link to comment Share on other sites More sharing options...
ack-ack Posted February 26, 2015 Author Report Share Posted February 26, 2015 It was pulsing at idle today between 1200 and 2200 rpm. It must be getting a gulp of air somewhere, thats what i thought Mac. Andy- will google that. The revs shoot up as per design when mk1 foot is firmly applied but take ages to drop Err could it be the agency Or Fuel Spencer Quote Link to comment Share on other sites More sharing options...
ack-ack Posted February 26, 2015 Author Report Share Posted February 26, 2015 Crank case breather!!! Its full of harry monk!! Quote Link to comment Share on other sites More sharing options...
walshie Posted February 26, 2015 Report Share Posted February 26, 2015 Has it been ok for the previous 450,000 miles? Quote Link to comment Share on other sites More sharing options...
Paddy Galore! Posted February 26, 2015 Report Share Posted February 26, 2015 (edited) Crank case breather!!! Its full of harry monk!! we know what you've been doing! dirty boy what about the oil filler cap, is that full of snot too? damp in the engine is common, and short journeys will compound the snot build up. but there might be a water leakage somewhere. I had an old mazda that engine used to race before it warmed up properly, that turned out to be a blown head gasket Has it been ok for the previous 450,000 miles? lol! Edited February 26, 2015 by Paddy Galore! Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted February 26, 2015 Report Share Posted February 26, 2015 If its doing your head in then thats gonna need a skim-Cars eh? tut Quote Link to comment Share on other sites More sharing options...
TaxiDriver Posted February 26, 2015 Report Share Posted February 26, 2015 It was pulsing at idle today between 1200 and 2200 rpm. It must be getting a gulp of air somewhere, thats what i thought Mac. Andy- will google that. The revs shoot up as per design when mk1 foot is firmly applied but take ages to drop Or Fuel Spencer Is he still selling property ? He knows nuttin about cars I'd hazard a guess at dirty throttle body after throttle position sensor Quote Link to comment Share on other sites More sharing options...
hodge911 Posted February 26, 2015 Report Share Posted February 26, 2015 if the breather is clogged with sludge mate make sure you clean the maf sensor but be careful do NOT USE PETROL OR THINNERS but buy proper maf cleaner Quote Link to comment Share on other sites More sharing options...
ack-ack Posted February 26, 2015 Author Report Share Posted February 26, 2015 Has it been ok for the previous 450,000 miles? Ha ha! My old 2.2 90 would have hit 300k if i hadnt of hit a saab in St.Reatham. Quote Link to comment Share on other sites More sharing options...
ack-ack Posted February 26, 2015 Author Report Share Posted February 26, 2015 we know what you've been doing! dirty boy what about the oil filler cap, is that full of snot too? damp in the engine is common, and short journeys will compound the snot build up. but there might be a water leakage somewhere. I had an old mazda that engine used to race before it warmed up properly, that turned out to be a blown head gasket lol! It needs a good bit of stick. Its got a six hour run at the weekend so that should blow the last of the smeg out. Wish i hadnt bought the idle valve now! Other one was probably fine! Is he still selling property ? He knows nuttin about cars I'd hazard a guess at dirty throttle body after throttle position sensor Havent run it yet but ill have a decca if its still being annoying Quote Link to comment Share on other sites More sharing options...
ack-ack Posted February 26, 2015 Author Report Share Posted February 26, 2015 if the breather is clogged with sludge mate make sure you clean the maf sensor but be careful do NOT USE PETROL OR THINNERS but buy proper maf cleaner I had to rod it out with leccy fence wire and then give it a blow. I over cooked it somewhat with the compressor and blew mayo all over my pals cortina. Good old blue roll, he never suspected a thing. If its doing your head in then thats gonna need a skim-Cars eh? tut Quite! Otherwise i might blow a gasket. Quote Link to comment Share on other sites More sharing options...
andypaint Posted February 26, 2015 Report Share Posted February 26, 2015 Fourtrak just turned 400,000 on original engine and still not using a drop of oil or water, wish they built such simple to work on cars like it, no ecu hardly any sensors to break, mechanical pumps. Quote Link to comment Share on other sites More sharing options...
Paddy Galore! Posted February 27, 2015 Report Share Posted February 27, 2015 Ha ha! My old 2.2 90 would have hit 300k if i hadnt of hit a saab in St.Reatham. I had one of them too! try cleaning the throttle body. Quote Link to comment Share on other sites More sharing options...
ack-ack Posted February 28, 2015 Author Report Share Posted February 28, 2015 (edited) I had one of them too! try cleaning the throttle body.Its still idling irregulary. The throttle body was meant to hsve been done when it was serviced but sfter finding the jank in the breather i really ought to do it again. Its running much better now but still not right. Ive disconnected the cold start but it makes no odds. Edited February 28, 2015 by ack-ack Quote Link to comment Share on other sites More sharing options...
Paddy Galore! Posted February 28, 2015 Report Share Posted February 28, 2015 Its still idling irregulary. The throttle body was meant to hsve been done when it was serviced but sfter finding the jank in the breather i really ought to do it again. Its running much better now but still not right. Ive disconnected the cold start but it makes no odds. i'm struggling to remember here as I had mine nigh on 18 yrs ago, but I seem to remember stripping nigh on every breather pipe and replace, including removing the rocker cover as even that had clogged up. Quote Link to comment Share on other sites More sharing options...
ack-ack Posted March 6, 2015 Author Report Share Posted March 6, 2015 (edited) i'm struggling to remember here as I had mine nigh on 18 yrs ago, but I seem to remember stripping nigh on every breather pipe and replace, including removing the rocker cover as even that had clogged up. I drove it like i'd stolen it down to taunton last week, it still wasnt right. I popped the bonnet after janking up and could hear an air leak. Started fiddling and the hose to the idle valve was split. I ponced some sello from an absolute honey receptionist at the motel, wrapped it and it stalled dead. Started up and the revs dropped instantly after giving it a boot but wouldnt idle. Result!!!! I didnt even have a leatherman to try and wazz up the idle speed so foraged a cable tie to pack it out. Runs like a dream but despite idling okay from cold as soon as its warm its sitting at 1500rpm. Edited March 6, 2015 by ack-ack Quote Link to comment Share on other sites More sharing options...
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