2013 Caprice 3.6l

Tech discussions on the 3.6L V6 motor (LFX) used in the 2012 & up Caprice.
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xkholland
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Joined: Tue Jun 11, 2019 11:23 pm

2013 Caprice 3.6l

Post by xkholland »

RPM fluctuating from 400 to 600 lights are dimming and brightening while in park. I have replaced throttle body I was wondering if you guys could help me identify the idle air control sensor mass airflow sensor is good. Thanks
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Fudgehog
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Location: Wisconsin

Re: 2013 Caprice 3.6l

Post by Fudgehog »

Lights dimming and fluctuating in park?

I would definitely load test/check your battery and alternator first.
13 Caprice 6.0L, Solo catback exhaust, 3.27 diff, VCM OTR and Volant throttle spacer, MSD coils plugs wires, transmission pan upgrade and widemouth filter. Camaro 18" rims.

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CrashTestDummy
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Location: Pearland, Texas

Re: 2013 Caprice 3.6l

Post by CrashTestDummy »

It shouldn't be hunting like that, and yeah, what fudgehog says, check the alternator output and load test the driver's side battery. How many miles on it? I'd get a good data logger on it to see what your inputs are, and see if there are any codes set, and work from there.

Pending that, I'd run your hands around all of the vacuum hoses and make sure nothing is cracked or loose. I'm not terribly familiar with the V6, so I'd say to also check the PCV system. If it's got some miles on it, you may want to check/change the PCV valve and hoses.
Gene Beaird,
Pearland, Texas
2012 Caprice 9C1
1992 B4C 1LE Camaro
2018 Tahoe PPV (her car)
1995 DGGM Impala SS
1985 Firebird - 310 LS1 C Prepared autocross car.
1980 Bluebird Wanderlodge
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xkholland
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Joined: Tue Jun 11, 2019 11:23 pm

Re: 2013 Caprice 3.6l

Post by xkholland »

Thank guys the throttle body just needed to be relearn :lol:
CrashTestDummy
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Joined: Sat Feb 07, 2015 2:31 pm
Location: Pearland, Texas

Re: 2013 Caprice 3.6l

Post by CrashTestDummy »

Good to know. Yeah, these cars are really sensitive to new stuff being put on them. :roll:
Gene Beaird,
Pearland, Texas
2012 Caprice 9C1
1992 B4C 1LE Camaro
2018 Tahoe PPV (her car)
1995 DGGM Impala SS
1985 Firebird - 310 LS1 C Prepared autocross car.
1980 Bluebird Wanderlodge
And some others
Do YOU have my SPID?
Rhinob
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Joined: Tue May 21, 2019 8:26 am

Re: 2013 Caprice 3.6l

Post by Rhinob »

So what's the process for relearning the throttle body?

Thanks!
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Fudgehog
Posts: 278
Joined: Sat Aug 19, 2017 2:08 am
Location: Wisconsin

Re: 2013 Caprice 3.6l

Post by Fudgehog »

Use a tech2 scan tool or GDS2.

Either dealer performed, someone local and competent, or buy the VXdiag off Amazon and learn how to do it individually.
13 Caprice 6.0L, Solo catback exhaust, 3.27 diff, VCM OTR and Volant throttle spacer, MSD coils plugs wires, transmission pan upgrade and widemouth filter. Camaro 18" rims.

Active Duty USAF
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