Okay, It's a 1990 TII Rx-7, And i have 3 questions!
1. When i cold start it, it idles around 1500, like regular, then once warm, sits at around 900. And bounces 100 either way, Then when driving, rpms drop dangerously low or car stalls when placed in neutral or clutch pressed, unless there under 1000rpm, then it idles fine.

2. Under hard acceleration there is a loud rattling coming from the passenger side engine bay. Loud from the inside of the car, im sure just as loud outside. Its sort of like a squeaking rattle, very weird.

Any help would be greatly appreciated!

 

you goit a Bov on it? same thing happend to my friend it would die cause it was relasing to much air and the afm would read it correctly and it would result in less air more fuel and teh motor would flood

 

have u had the compression checked

 

The motor has just been rebuilt, the compression is fine, and yes there is a BOV. I also have a PowerFC In the car, it's from Japan, and its converted for the FC if that helps at all.

EDIT- I have an HKS ssqv BOV? I think thats what its called. Anyways, is there a way to set it or soemthing maybe?

 

Anyone else help? If its the BOV thats doing it, what do i do to make it stop dying?

 

ok heres the update, i tried adjusting the bov...it did nothing. Even if its parked and u rev it it will not grab idle again, it simply falls to 0....

 

Is your exaust in one peice? might need to replace these cars are very dependent on back pressure

 

Hmm that might be it! I have an exhuast leak somewhere around the manifold, but i didnt realize it would cause these kind of symtoms...... Its a full RB exhaust, with trust wastegate that bleeds to the atmosphere. (11psi spring) and the wastegate lines are not hooked up so it wont boost. If that makes a difference...

 

have you check for vac leaks?

 

It really just depends on the amount a small leak shouldn't affect it that much it was just a thought let me know how it goes

 

Yes I have checked for vacuum leaks, but ill go over it again...thx for the help guys, ill just have to keep guessin.

 

i vac leak, unless serioius, would not cause the car to die the way it is, would it?