Why does my Chevy Trailblazer have a rough idle?
Why does my Chevy Trailblazer have a rough idle?
While there are a variety of reasons your Chevrolet Trailblazer has a rough idle, the most common 3 are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil. See what others are asking about their Chevrolet Trailblazer. Get answers from RepairPal’s community of auto experts and enthusiasts.
Why does my bike idle but bogs with throttle?
If the engine idles fine, it pretty much eliminates the possibility of an “air leak”. The slightest air leak would upset idle mixture and cause stalling or high idle speed that cannot be adjusted with the throttle stop screw. I’d look at some simple stuff first, like the spark plug – which might fire OK at idle, but misfires under throttle?
Why does my car engine run rough while idling?
When your car engine runs as it should, everything should be smooth without any noise. When any number of things goes wrong, the engine can start running rough, especially while idling. By understanding the causes of a car engine that has a rough idle, you can resolve the issue easily.
Why is the air filter on my trailblazer not working?
If you have reason to suspect that your Trailblazer’s air filter has not been changed in a very long time, or if you have recently been driving in tough conditions, it may be worth taking a look at it. It could be so clogged that there is not enough air getting through for quality idle conditions.
Why is my Chevy Trailblazer running rough at idle?
Really, your Trailblazer will be running rougher at any RPM, but a misfire will be most pronounced at idle. Spark Plug Wires – While not every model and engine combination of vehicles today comes with spark plug wires (a lot are now coil on plug), if your Trailblazer happens to have them, they can go bad and cause a rough idle.
If the engine idles fine, it pretty much eliminates the possibility of an “air leak”. The slightest air leak would upset idle mixture and cause stalling or high idle speed that cannot be adjusted with the throttle stop screw. I’d look at some simple stuff first, like the spark plug – which might fire OK at idle, but misfires under throttle?
Why are the spark plugs on my trailblazer not working?
Spark Plugs – One of the absolute most common causes (if not the most common reason that your Trailblazer may be misfiring) is the spark plugs. Although most modern vehicles use iridium spark plugs, they still need to be changed at the manufacturers recommended interval.
Why does my Chevy Blazer engine bog down when I hit the gas?
Take it to a good local mechanic (not a dealer) and see if this is one problem. My Blazer bogs down when you hit the gas and has trouble starting. We have replaced the MAF sensor, plugs, rotor, cap, plug wires, and fuel filter. The fuel pressure is at 50psi when idling and 64 wot when driving.
