Hi all,

 

my car seems to idle about 2000rpm when cold. it also takes a long time to drop down to 1000rpm when warm and never goes below. is this normal? anybody got any ideas? its a 1990 n/a manual.

 

alex.

Base idle adjustment

Base idle adjustment should be the last thing to touch as you may just be lowering it to cover up another problem, the steps in the links are for an erratic idle but some may help.

idle problems 1

idle problems 2

i get exactly the same thing, too.. but my idle drops to about 850rpms once it's warmed p correctly.. can take 10 - 15 mins at times to settle at this idle though..

Thanks for the tips lads. Just fitted 2 new airfilters and it seems to have reduced the idle a bit but its still too high.

 

Alex

I cleaned my throttle bodies yesterday and my idle has risen to 1600rpm in park and 1100 in drive i did disconnect the battery for an hour must say they were very dirty.

Whats my solution any one near by to help i dare not touch any screws in case i mess things up even more :hyper:

I cleaned my throttle bodies yesterday and my idle has risen to 1600rpm in park and 1100 in drive i did disconnect the battery for an hour must say they were very dirty.

Whats my solution any one near by to help i dare not touch any screws in case i mess things up even more :hyper:

The ECU will need to "self learn" again, and you may find that after a long drive, or several drives the idle will be settled by the ECU. If not, then follow the instructions above.

 

..or Zen garage are probably your closest specialists

now your throttle bodies are cleaned you want to check your TPS and throttle balance, and set the base Idle and then let the tps reset itself

Thanks guys ill have to get it to the zen garage .

Base idle adjustment should be the last thing to touch as you may just be lowering it to cover up another problem, the steps in the links are for an erratic idle but some may help.

idle problems 1

idle problems 2

 

Suffolk zx

I don't know how you found that link but it was excellent. I'v learnt plenty from it. Lots of notes taken from it for further referrence. You guys are a mind of infor.

 

Many thanks

heres a good link for ya

full of great stuff

 

http://www.aus300zx.com/tech/index.html

Can i just say retro that guide or should i say bible is f@#king excellent an should come as standard with the car lol

 

Anyway thanks as my mate who is a machnic does not want to touch my car so am trying to learn for my self but only minor things for now cheers ianchy