0
A 1992 Chevy van with a 4.3L engine may idle high due to several factors, including a vacuum leak, which can introduce extra air into the intake system, or a malfunctioning idle air control (IAC) valve that fails to regulate airflow properly. Additionally, a sticking throttle body, a faulty throttle position sensor, or issues with the engine's sensors can contribute to elevated idle speeds. It's important to inspect the vacuum lines, IAC, and throttle components for any signs of wear or damage. Regular maintenance and diagnostics can help identify and resolve the underlying issue.
What else can I help you with?
What causes high engine idle and surges in the 1989 Corvette?
The cause of high engine idle and surges in the 1989 Corvette is due to..Read More
Why 1991 Chevy silverado idles for a while then jumps to high idle?
I have 91 chevy k1500, It does this, Sometimes it will idle a few minutes, then jump to high idle and check engine light comes on, And sometimes its as soon as i start the engine... I was told it was a vacum leak, But im no mechanic
What would cause a 1996 Chevy Corsica to idle high then idle fine after turning the engine off and on again?
check the soleinoid
Where is the high speed idle control on a 2001 Chevy lumina v6 engine?
On a 2001 Chevy Lumina with a V6 engine, the high-speed idle control is typically managed by the throttle body assembly. The idle air control (IAC) valve, located on the throttle body, regulates airflow and adjusts the engine's idle speed. You can find the throttle body on the intake manifold, near the front of the engine, connected to the air intake system.
What causes a 96 Chevy Tracker engine to die at idle when ac is turned on?
probably got a bad IAC motor
What causes a 1998 Chevrolet 305 engine to idle high?
Check throttle positioning sensor.
What causes high carbon at idle on smog check 1995 ford ranger 2.3?
ford suck. go Chevy
How do you get the idle to go down in a 1993 Chevy z28 camaro?
The idle speed is computer controlled on a LT1 engine. If it is a little high, try checking for vacuum leaks.
Why does Chevy blazer have rough idle and engine shake at idle?
Check the motor mounts.
What causes the ignition not to turn off the engine in a 1972 Plymouth?
engine idle set too high or the timing is off and needs reset.
Very rough idle when dropped into gear on your 99 Chevy Tracker with the 2.0 engine runs fine otherwise have replaced the PCV and plugs no help?
you need the fast idle adjusted on the engine you may have idle set where it sounds fine in idle but not high enuff when dropped in gear.
What causes the vehicle to lunge forward or backward when the transmission is placed in drive or reverse?
Engine idle too high.
