92 240sx idling problems and others.

[Portal-S13]

Hey, new to the 240 world, ive wanted one for a long time now and finally got my 240. just a few quick questions...

'92 240sx 5speed hatch with KA24DE

1. My 10a air con fuse keeps blowing the second i try to put one in. Any pointers on what i should be looking for?

2. My 240 drops below 500rpms only when i put the car in nuetral as i approach a stop. i just changed all of my belts, made sure the idler pulley was tightened, checked my egr valve, iacv valve all the grounds are fine. MAF is brand new. Ive also tried seafoam and it still idles this way. anything i am missing or skipping over?

Thanks for looking and any feedback possible. And thanks for the warm welcome into the 240 community.

[edwin3211]

i got a 93 i bought 2 months ago and man can these cars be a headache i replaced from ecu to the fuel pump and come to find out the throttle body was dirty and tps was bad try the simple stuff first diagnose it the right way and good luck!

[240hatchsx]

It's sounds like a vaccum leak some where bc I had a similar problem it idle but when I was deaccellerating the rpm would drop to like 500 and bounce. So before you go and spend the big bucks just double check your lines and make ur engine bay grounds are good as well

[Portal-S13]

I figured it out I think, my ac pulley kept locking up and the belt was squeaking, I believe that the resistance in the belt was slowing the turn of the other pulleys, so I cut it off, now it idles fine just no ac.