Q: Rough idling and shaking on a 2000 Blazer

asked by on May 20, 2016

I have a 2000 Blazer and it has a rough idling, shaking problems when it idles. It shakes until I pass the 1000 and stops. What should I do? I got it for free and this is the first problem I've had since I got it in 2009. Thanks.

Car is shaking or vibrating Inspection $94.99 - $114.99 Get a Quote

You’re a lucky man, you’ve had that thing for seven years and this is the first problem you have. I’m assuming you don’t drive that many miles. On those, a lot of times it is a vacuum leak. I’ve got a video "finding engine vacuum leaks with a cigar." It shows you how to look for the vacuum leaks. When you get a vacuum leak, it sucks air and makes a car shake. When you rev it up, since it is revved up and going fast, that little vacuum leak doesn’t affect the air-fuel ratio as much. So check for vacuum leaks. You might change the PCV valve, too. A lot of times, they just leak and they cost like ten bucks so you can easily change that. If you’re still uncertain what to do, you can enlist the help of a mechanic, such as one from YourMechanic, to inspect and repair your car’s shaking issue for you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

White smoke expelled from exhaust
The excessive fuel condition is from the exhaust regeneration system malfunctioning and should be diagnosed following updated diagnostic procedures for the check engine codes received. Follow technical service bulletin 09-10-02 for an updated procedures directive.
Wheel Hub Assembly
Hi there. Every tire and wheel on your vehicle is secured to the wheel hub assembly (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-a-damaged-wheel-bearing). If the wheel bearings or the hub itself are damaged, then it can break, causing the wheel and tires to literally fall off...
Chime in car is annoyingly Too Loud - 2016 Chevrolet Volt CVT
The Chime Volume setting has two values, Normal and High. Check your settings to make sure it is in the Normal position. If that is still too loud for you, you might try putting some duct tape over the "door...
Engine light on. I have code p0013
Hi there. It is possible that the wrong oil was used or this can occur if a poor quality oil filter was installed. Most of the time though on this vehicle it is caused by a failure in one of...
Won't stay running
Hello and thank you for your question. It seems to be the transmission that is causing the engine to stall out when you are putting the vehicle into drive. The transmission could have a converter clutch lock up issue causing...
Car makes a screeching noise when foot is on brake and in drive.
Hi. This is a tricky problem to solve because it is intermittent problem. A lot of times with intermittent problems, they have to become a consistent problem so the problem can be fixed properly. There is a possibility that the...
Car makes noise like howling wind while Idling.
The power steering pump may whine if the fluid level has become too low from a leak or you may hear a squealing noise if the belt has become too slack. While the belt is off would be a good...
Overflow tube in the front differential is leaking oil constantly on a 2014 GMC Sierra 1500.
Disconnect the vent tube on the differential and blow through the tube on the differential. If you are unable to blow through it, then the differential is creating too much pressure and pushing out the oil through the tube. I...
01 mustang v6 running rough at idle and drive. Please help. Replaced a bunch, still can't figure out issue.
This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the motor (i.e. putting it in gear, turning on AC or engaging the brakes). The Manifold Absolute Pressure (MAP) sensor...

Related articles

2012 Chevrolet Silverado vs. 2012 Dodge Ram: Which One Should I Buy?
When you are looking for a way to get a load of mulch or gravel, or need to haul a large trailer or boat behind your vehicle, chances are you are looking for a truck. Trucks are not meant to...
The Best Used Cars to Buy If You Love Camping
Do Do you love camping, getting back to nature and enjoying life in the great outdoors? If you do, then you know that getting there can be half the fun, and it’s even better if you have a great ride....
The Best Used Cars to Buy If You’re a Plumber
Plumbers Plumbers need to carry around all manner of tools and supplies. If you’re plumbing a large building, or even a decent sized home, you’re going to need a vehicle that has quite a bit of cargo capacity. A car...