bucking engine

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02-26-2019, 12:22 PM

setyre

Thread Starter

Join Date: 06-27-2014

Location: parkville md

Posts: 9

bucking engine

engine starting bucking really bad (2011 HHR .2.2) last may repair shop replaced the camshaft position solenoid/sensors....check engine light never came on.....now today same thing happened....took it back and was told unless the check engine light is on they can't do anything but yet they fixed it before without the check engine light on....they told me to bring it back when the light comes on....where do i go from here????

02-26-2019, 12:56 PM

RJ_RS_SS_350

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Join Date: 05-01-2014

Location: California

Posts: 7,788

Have the codes pulled anyway, there may be pending codes that could help diagnose.

Did they replace the sensors or the solenoids? Not the same thing

02-26-2019, 03:34 PM

setyre

Thread Starter

Join Date: 06-27-2014

Location: parkville md

Posts: 9

both solenoids and senors were replaced

02-26-2019, 04:32 PM

donbrew

Technical Moderator

Join Date: 01-23-2009

Location: Fredericksburg, Virginia

Posts: 24,662

They were throwing your money at it!

However, without a CEL and codes remote diagnosis is a lost cause. Maybe spark plugs.

02-26-2019, 06:37 PM

Oldblue

Administrator

Join Date: 10-13-2011

Location: Welland,Ont Canada

Posts: 36,451

Welcome to the site.
Can you stop by any parts palace like AZ or OR , and have them read out the pending codes
post them up here, it could be a timing chain issue, like a broken front guide.

02-26-2019, 08:29 PM

setyre

Thread Starter

Join Date: 06-27-2014

Location: parkville md

Posts: 9

sparks plugs were replaced last Sept....have only driven the car a little over 2,000 miles.....

02-26-2019, 09:03 PM

Greybeard999

Senior Member

Join Date: 03-06-2010

Location: Ohio

Posts: 6,869

Quote:

Originally Posted by setyre

sparks plugs were replaced last Sept....have only driven the car a little over 2,000 miles.....

Hmmm... What plugs were used?

02-26-2019, 09:08 PM

Oldblue

Administrator

Join Date: 10-13-2011

Location: Welland,Ont Canada

Posts: 36,451

Good question, AC Delco 41-103 Iridium plugs, the engine is designed around those specific plugs.
if your mechanic tried to gap them, the electrode whisker could be damaged.