1988 Iroc 305 tpi - will not stay running while in gear but will stay running while in park. If I disconnect the timming advance wire the car will stay running. I also have a problem with over heating while in traffic or on the freeway, cruising at the speed limit. I don't know if the two are related but I have changed out just about everything except the wiring harness. New computer, distributor, mas airflow sensor, throttle control motor, oxygen sensor, new radiator, thermostat, electric cooling fan... etc. Can anyone out there help with advice other than torching the money pit :P

Does it idle high in Park? Sounds like a vacuum leak. Spray water around the intake manifold and note  rpm changes. That is likely the cause.

douglas

According to the mechanic that worked on the car previously, he has found and fixed all vacuum leaks but I have my doubts so I will take your advice and see if it works. I'll let you know how it turns out.... thanks in advance.

dude

u'r overheating is an easy fix..

go look at the bottom of your ratator surport...is the plastic air dam still bolted to it...

the car breaths from the bottom and if that black plastic piece is missing your car will overheat nomatter what you do...

go look I'll bet it's missing  or cracked to pieces

check the egr for your  stalling  woos

i have a 1985 z28 my buddie has a 92 rs and i have a nother frien with a 91 rs they all seem to run extreamly hot so i bought a wiring to to run fan from the time i start myu motor till the time i kill it it has not seen 220 after that except long trips and at speed over 80 for long periods of time.  

I thought that 220 was way to high to start the cooling fan also. but a GM mech that I asked about it said that that is normal for the newer cars. I think it all has to do with emission control?...  

yes, newer cars run hotter. they run hot in order to pass emissions standards by more effiecently buring the gases. i think thats also why when you first start them up, they kinda rev up more than normal, before settling down.  

yep i got the same car with the same deal . our cars like to run hot but that is way to hot. that guy is right though 9 times out of 10 it the air damn underneath the car they rub on everything and you wont know when she falls off .  

My 90 chevy truck runs 210 all the time on the gauge. Back in the 60's chevy small blocks ran about 180.