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Old 01-07-2014, 06:53 PM   #5
rhandwor
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Re: 1992 Blazer 4.3 S10 Rough idle cold

Quote:
Originally Posted by Axlfromfinland View Post
Replaced temp sensor today (2- wire, beside upper coolant hose in front of engine) -> no change in symptoms. Still rough idle cold.. Any ideas where to continue?

Thanks!
Check ground wires near thermostat housing,left rear of engine. Check for leaking vacuum hoses,spray WD 40 along intake,around throttle body. You can get some cleaner and clean IAC. Idle Air Control Valve. You can also put a can of injector cleaner in the fuel tank. Try spraying a little starting fluid around the two injectors I think the engine is running lean until it warms up.
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