Help with low idle....

[MY 85 GT]

My car all of a sudden seems to have a low idle...its an AOD and in drive its idling at 600 rpms the lights dim and i think it should be idling higher how can i get the idle up?..How do i adjust the thorttle plate to make it higher?...thanks for any help...

 

[apollo12]

If the mustang is stock 750 rpms, not stock at least 950 rpms.Did you adjust the Idle screw?and check the tps?Is your alternator charging?

 

[MY 85 GT]

If the mustang is stock 750 rpms, not stock at least 950 rpms.Did you adjust the Idle screw?and check the tps?Is your alternator charging?

Ok i checked the TPS yesterday..the best i could get it adjusted was .895,there isnt really much room to adjust it i mean i could oblong the slots more..i raised the idle slighty...it seems to be better but should i get the TPS to..980 or is it ok were it is?..The Alt seems to be charging fine...i think...lol..I mean its been really cold here in the teens every nite and it starts every morning...So i hope the Alt is ok...Should i get a new TPS or what?

 

[liljoe07]

TPS is fine leave it alone.

 

[MY 85 GT]

Do you think i could raise the idle some more i think its a little low still...Will that have any ill effect on it?

 

[tannerc91gt]

Do you think i could raise the idle some more i think its a little low still...Will that have any ill effect on it?

Adjust the idle screw.