EFboostedSI

Ok start off got a 89 hb b18a1 converted to obd1, problem I'm having is the car runs get tell it get to normal temp, once it gets to normal it start running off 2 cyc, the tach drops to 0rpm u can't rev it up, idk what's up never seen this before,o the cars turbo but it runs fine tell it gets to normal temp

Need help please,

EFboostedSI

a new dizzy fixed the problem for a week or two, but now its doing it again maybe the dizzy went bad again

EFboostedSI

Or is it the temp sencor, I've never seen this problem before

dephtone

I would check to see if you have a vacuum leak somewhere. It sounds like once the car warms up something opens up and kills the idle.

You can spray some brake cleaner on the vacuum lines and once you have the change in idle you know the area is leaking.

EFboostedSI

Ull have to try that tonight. But I lose all rpm and it still run runs off 2 cyc

EFboostedSI

Ill*

dephtone

Is it literally running off 2 cylinders? Have you verified by checking for spark at the distributor?

EFboostedSI

Thats one thing I can't get if u pull the wires off at the dizzy there still fire and u can pull 2 wire off
The plugs and It won't change the way it runs,

EFboostedSI

Now when u pull the wires off at the plugs u can hear them sparking. It really seems like it jumped tinting but u can let it cool down for about 3 to 5 min start it back up and it be fine tell the temp comes back up a lill bit

Funtington777

Sounds like an idle air control valve maybe?

hackjobcrx

i would check your iacv or fast idle. you also might want to check to see what your idle screw is set to.

KINGVEM^^ED6

iTrader: (1)

EFboostedSI

K ll test tho but my fast idle is blocked off and it's not throwing any codes

EFboostedSI

What's could the idle screw have to do with this?

hackjobcrx

the fast idle is a mechanical part and wont through and codes. if your car idles at 1200 or higher it will cause the injectors to keep shutting off and cause the bad idle. but if you say you fast idle is blocked off that is a problem. a way to test your fast idle and iacv is to take the intake off and there is two holes in the throttle body the top hole is for your iacv and the bottom you fast idle. start your car and cover the hole with your finger but not so much that your car stales. do that on both holes and if you idle smooths out which ever hole your holding that part is bad or just needs cleaned. i just had the same problem with my crx. but now i have an electrical problem. i blew 7 fuses plus the ecu fuse and am still blowing the ecu fuse hen i turn the key