1997 Chevrolet Astro "rpm" Questions

..., when slowing down engine continues to surge then , at idle will continue to surge form idle rpm to around 1200 rpm Sounds like a possible vaccume hose leak? adjust or replace i.a.c.valve

On my 1992 Chevy Astro van I get warm air from the heater when the engine is running at high rpm, but it starts blowing cool air when it goes to idle rpm. I was thinking it might be the heater (vacuum

...start at all for 8 to 10 seconds then it starts. After it starts the idle will drop to 2-3 hundred rpm then right back to about 600 rpm. then it runs fine till next time. you must RUN the ...

Engine idles rough and even misses. At higher rpm engine smoothes out. At idle with foot on break engine loads up and will bearly run. Hard on fuel. Is this a vacuum leak or what? Bingo it sounds very

...Astro that just started to Idle rough and has poor acceleration. Runs a bit smoother at higher RPM's, but still feels like it's 'missing' something. . . it may need a tune-up, if its been a

express 2500 will not idle. When I come to a stop it dies. Starts back up a little flooded buy with RPM it smooths out but when I let off the gas it deis again?????

use a spray can of intake or brake cleaner. spray around vacuum lines, manifold gaskets etc. if the rpm increases you found a leak

HC reading of 400 @ 2500 rpm. New catalitic converter. high hc means uunburned fuel exiting the engine, usual suspects is missfire, leaking injector, bad cat, o2 sensor, map sensor, vavuum leak, best ...

yes the radio gets worse with more rpm and the temp runs fine the vibration only happens when maintaining a speed but in all gears Feel it throughout van, or just up front? Tire balance has been ...

2000 Astro Random Misfire Starts fine Run up to 2500 RPM or so Runs good for a while ( 15 or 20 seconds) Starts to misfire Continues to misfire at speed or idle Pumps raw gas out tailpipe Let it sit a