ocasionally when car in neutral or park the car idles at 1500rpm but when into drive it idles normally. This is only occasionally, normally it idles fine in all gears?

surely someone can help?

sticky idle vlave?

have you tried reseting tps and adjusting idle?

still doing the high occasional idle thing. How do I do what jimmytt suggests? Also what else can I do its driving me mad.

still doing the high occasional idle thing. How do I do what jimmytt suggests? Also what else can I do its driving me mad.

 

i'm in the same boat here unfortunately:cry: mines been playing up while driving too, late gear changes, non existant gear changes and to top it all off i have no idea what to do with it:confused:i've just disconnected the battery on mine to try and reset the ECU, not sure it'll help, but it's about the only thing i'm confident in doing to my Z

have you cleaned the temp sensor?

would also recommend cleaning any verdigris from temp sender terminals

i'm in the same boat here unfortunately:cry: mines been playing up while driving too, late gear changes, non existant gear changes and to top it all off i have no idea what to do with it:confused:i've just disconnected the battery on mine to try and reset the ECU, not sure it'll help, but it's about the only thing i'm confident in doing to my Z

 

is yours a auto?

if it is try a gearbox ecu diagnostic, sounds like the revolution/speed sensor

as above..try the temp sensor..ecu one:) and the fact the idle drops down in D is the t/c drag

is yours a auto?

if it is try a gearbox ecu diagnostic, sounds like the revolution/speed sensor

 

ecu diagnostic????? fooked if i know how to do that :rofl:but it is an auto, i'll have a search on here for next steps but fear that unless i find an idiots guide i may have trouble:(

ecu diagnostic????? fooked if i know how to do that :rofl:but it is an auto, i'll have a search on here for next steps but fear that unless i find an idiots guide i may have trouble:(

 

Here ya go mate

 

http://www.twinturbo.net/ttnettech/autodiag/autodiag.html

ocasionally when car in neutral or park the car idles at 1500rpm but when into drive it idles normally. This is only occasionally, normally it idles fine in all gears?

 

like others have said , it sounds like a intermitent fault so probably dirty connection to ecu water temp sensor , or idle control valve maybe

Here ya go mate

 

http://www.twinturbo.net/ttnettech/autodiag/autodiag.html

 

cheers dude!!!! guess what i'm gonna be upto this weekend:)

not sure if this matters, but only does it when wet.

maf getting wet

ment air flow meter is getting wet maybe , ?

cheers dude!!!! guess what i'm gonna be upto this weekend:)

 

 

did you do the test mate? any codes ?

no error codes at all. Just dont understand it, it is so intermittent. I can stop the car at traffic lights and the idle is fine, then the next lights it will idle high and then normal again and so on!!

did you do the test mate? any codes ?

 

3rd flash was the long one - throttle sensor circuit, at least i know where to start now

3rd flash was the long one - throttle sensor circuit, at least i know where to start now

 

might just need adjustin murf?

no error codes at all. Just dont understand it, it is so intermittent. I can stop the car at traffic lights and the idle is fine, then the next lights it will idle high and then normal again and so on!!

 

 

umm i wonder if the afm is on its way out?

more developments. There is a black electrical connection clip with wires near the tps sensor with another connector going into it. What is this as when I squeeze the two plugs closer together it goes back to normal idle? It pushes in by about 5mm so it is loose. Is this connected or is it just fluke it idles fine when pushed?