[FiveooH]

SO FOR ALL OF YOU 5.0 OWNERS ITS A NICE DAY IN THE BAY AREA. iTS A DAY TO TAKE MY T-TOPS OFF....
BUT WHEN I WENT TO TURN ON MY CAR THE "RPM'S" DIDNT STAND STILL THEY WENT UP AND DOWN UNTIL THE CAR WENT OFF.
I FINALLY GOT THE CAR MOVING AND STARTED DRIVING AROUND 30+, WHEN I DECIDED TO TAP THE BRAKES GOING DOWN A HILL, IN NEUTRAL....AND THE CAR JUST RANDOMLY SHUT ITSELF OFF...THE OTHER PROBLEM IS THAT ITS OVER HEATING....WHAT SHOULD I DO?

THX
NATHAN

 

[heavyduty]

Be sure to check your IAC valve. As for overheating, where to begin? Can you post back with a bit more specifics into how bad it's overheating? But for starters, thermostat, waterpump, radiator, radiator cap, bad hose(s), clutch fan or even a headgasket are all things that can/will cause overheating issues.

 

[89coupe]

Pull the codes from the ECM to make sure nothing sensor wise is causing the idle surge. How do you know its over heating, If you going by the stock gauge, DONT. And Please take the Caps lock off your key board.

 

[FiveooH]

haha sorry about the caps
my bad
the hoses are fairly new, the radiator does have a leak.but its minor.
the thermostat has not been changed sence prolly 1995.
how would i check the IAC Valve?

 

[89coupe]

There is realy no way th check the IAC valve technically that I know of. Usually if you unplug the IAC while its running, and the idle drops its working to some extent, but not nessecarily 100%. Just take it off and clean it real good with some brake cleaner and reinstall it. Do a Base Idle Reset and Pull the Codes fromt the ECM

Base Idle Reset
Summarized/Corrected Base Idle Reset Procedure

KOEO and KOER
DIY KOEO/KOER/Cylinder Balance Self-Test Procedure