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2010 HHR, Cruise control not working, Engine sputtering/ENG PWR REDUCED

Old Dec 16, 2024 | 07:44 AM
  #11  
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Tighten the four 7 mm bolts in the under hood fuse box , then see if the check engine light shows different codes
Old Dec 16, 2024 | 07:51 AM
  #12  
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You need a new #2 O2 Sensor (not Bosch). Something is wrong with the throttle position sensor, check the connectors and clean the throttle body.
Tighten the 4 bolts in the under hood fuse box, they must be very tight.

Are the codes with "P" after them permanent, current or pending? If permanent ignore them.

Last edited by donbrew; Dec 16, 2024 at 09:45 AM.
Old Dec 16, 2024 | 08:37 AM
  #13  
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Bad backup light disables remote start, not cruise, I think.

Disabled cruise with certain engine problems does serve to (imperfectly) protect the engine by avoiding high-power conditions not deliberately initiated by the driver. Limp mode is the next level, I guess. IDK.
Old Dec 16, 2024 | 08:50 AM
  #14  
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Please research the issue so ywk, if you’re not sure.
Old Jan 9, 2025 | 03:46 PM
  #15  
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1st scan, Jan. 7th
1st scan, Jan. 7th
2nd scan 1st page, Jan. 9th
2nd scan 1st page, Jan. 9th
2nd scan 2nd page, Jan. 9th
2nd scan 2nd page, Jan. 9th
Originally Posted by donbrew
You need a new #2 O2 Sensor (not Bosch). Something is wrong with the throttle position sensor, check the connectors and clean the throttle body.
Tighten the 4 bolts in the under hood fuse box, they must be very tight.

Are the codes with "P" after them permanent, current or pending? If permanent ignore them.
I tightened the bolts, the codes have stayed the same.
What O2 sensor brand do you recommend? And is #2 O2 the one for Bank 2/downstream?
I went to O'Reilly's and got a new gas cap to hopefully narrow a couple codes down.
Got it scanned (first image) and an O2 sensor, by the time I realized it was Bosch I just wanted out of there (long story) so I returned it today for a full refund and got scanned again (second/third image) and only thing that changed was P2135 went from stored/permanent to stored/pending/permanent.
Seems that the P on codes stood for permanent...maybe? Unsure.
Thank you all for your responses, hoping to get this all fixed soon.

Edit: Will also check sensors and clean the throttle body this weekend. Forgot to mention.

Last edited by Cooldragon556; Jan 9, 2025 at 03:48 PM. Reason: Forgot to respond to something quoted
Old Jan 9, 2025 | 04:51 PM
  #16  
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inline engines don't have a bank 2. #2 O2 sensor is after the cat #1 is before the cat.
NGK/NTK is a good brand or GM.

Seems to me this is either fuses or wires.
Old Jan 9, 2025 | 05:32 PM
  #17  
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Originally Posted by donbrew
inline engines don't have a bank 2. #2 O2 sensor is after the cat #1 is before the cat.
NGK/NTK is a good brand or GM.

Seems to me this is either fuses or wires.
I don't entirely understand (I have very little knowledge about cars) "cat" meaning the Catalytic converter? And does that mean upstream or downstream? (Those are the options they gave me for O2 sensors..)
Old Jan 9, 2025 | 06:40 PM
  #18  
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yes and yes
Old Jan 9, 2025 | 06:46 PM
  #19  
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Originally Posted by donbrew
yes and yes
So, replace both upstream AND downstream?
Old Jan 9, 2025 | 07:25 PM
  #20  
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Downstream. P is a powertrain code. You don't need to worry about permanent codes.

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