Need Help?

2005 Chevrolet Colorado 1SB LS Z85 Crew Cab 126.0 WB

2005 Chevrolet Colorado
Trim Info:
Rear Wheel Drive, Crew Cab
21 mpg city / 26 mpg hwy
Other Trims
Do you own this car?
Estimated Mileage
 Miles
Enter current mileage for most
accurate info about this vehicle


Track Your Service Records
Get Recall Alerts
Get Updated Value Estimates on Your Car.
back to question list

Ask the Community

Ask Our Auto Mechanics


August 6, 2012, 5:38 pm

Jason H
 

Question: Cam/Crankshaft position sensor

Having intermittent rough idle and hesitation on acceleration on '05 Chevy Colorado. Had it in the shop and they cleaned the throttle body, which.. Made things better, but, problem still occurs.

Pulled the Cam/Crankshaft position sensor.. Looks like this.

http://tinyurl.com/92nydo9

Hard to see in a picture, however.. The middle screen is.. Fairly dirty with very fine particulate matter. I used carb cleaner to clean the debris and reinstalled. Can't say it's SOLVED, but, didn't happen during my test drive.

Would you think from that image that may be the problem? Does that look bad, Bad or BAD? I know it's not good, just a matter of how bad it is.


August 9, 2012, 7:22 pm

Elizabeth K
Expert Mechanic

That type of sensor works by picking up a magnetic signal, so unless that screen is plugged with iron filings, it's not likely that cleaning it will affect it. You could check the signal output of it to see if it's working, some good info on that here:
http://troubleshootmyvehicle.com/gm_ckp_4.3L_5.0L_5.7L/troubleshoot_ckp_sensor_1.php

Any codes? Also, clean the MAF and IAC. Even if it doesn't fix it, it's necessary preventative maintenance and is cheap to do.


0/0 users found this helpful.

Ask our panel of certified auto mechanics a question. We pay for their advice so you don't have to



My Auto Score

See the free AutoCheck score

Meet The Experts
Kim Perrin
Kim Perrin is our resident mechanic here at DriverSide. Kim worked as…
Tyler Orr
Tyler Orr is an expert in German and Japanese cars and has been a mechanic …
Elizabeth Kriesten
Elizabeth Kriesten worked as an automotive technician for several years at Dodge…
Tips on Servicing

Car Brakes: How Do You Know When to Change Them?

By Zach Bowman For those who suffer a daily commute through heavy traffic, your vehicle's braking system can bring thousands of pounds of metal, plastic and empty Starbucks cups to a stop hundreds of times before you get to work. It goes without saying that these pieces wear out, but they do so slowly, meaning you may not notice they need attention until ...

Read more…