Well I just installed my New Rotary Extreme 3 Piece Pulley Kit and finally eliminated my Air pump.... the car runs great when it gets movin' but the idle is really lumpy....
the kit is the main pulley, water pump, and alternator pulleys.

I took a look at the commander on my power FC and the bar graph at idle is going up and down all over the place at idle.... this is very peculiar to me... before eliminating the air pump the graph at idle was fairly straight.... just wondering if this is normal....

I also noticed that my vacuum reading at idle is lower... i used to get about 15-17 vacuum at idle now it's only reading 10 after the pulley kit and air pump elimination.... i'm pretty worried about that...
needless to say the car is very responsive on the highway....

someone plese tell me if this lumpy idle is common... especially since I have a large street port... I just want to know what I can do to even it out a little better.... also what should I do about the low vacuum pressure...???


any help would be greatly appreciated...

thanks in advance....
93'

 

it sounded fine to me

 

kyle? that you?

 

someone... plz tell me i'm not paranoid about my car.... cuz i spent a lot of money to get her to run right... and this lumpy idle scares me...

 

Maybbeee....better come to the meet, your gf excuse isnt good enough
BTW ur cars fine, thats just what happens when you d/c the airpump, plus ur streetport already made the thing lumpy..

 

I am going to the meet... I was just worried cuz the friggen vacuum pressure is so low, I mean what's the deal with that? .... and I hate how my figgen alternator is goin badd.... haha I need a new one no doubt

 

whats wrong with ur vac? jeez ur just pulln a bunch of **** outta ur ***...yea ur alt is about dead so you should start lookn for a replacement before your battery gets drained

 

I'm serious the vacuum went from 15 to 10 .... I heard that a few pounds was normal.... oh well i'll just call chuck tomorrow...
anyone else ever have this problem?

 

As it relates to the hunting idle since I'm assuming you're underdriving the alternator now, if you have a lot of electronics the alternator may not be able to keep up. Although it could just be the Power FC readjusting itself

 

okay so next on my to-do list is buy new alternator......

 

Or just find a smaller pulley and shorter belt... Your alt may be fine

 

turns out the alt is fine.... it was just too lean @ idle... so who was pullin **** out thiet *** now?! :P