2013 Caprice 3.6l

Tech discussions on the 3.6L V6 motor (LFX) used in the 2012 & up Caprice.
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xkholland
Posts: 4
Joined: Wed Jun 12, 2019 4:23 am

2013 Caprice 3.6l

Post by xkholland » Thu Jan 02, 2020 11:54 pm

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
Posts: 254
Joined: Sat Aug 19, 2017 7:08 am
Location: Wisconsin

Re: 2013 Caprice 3.6l

Post by Fudgehog » Fri Jan 03, 2020 1:21 am

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, MSD coils plugs wires, transmission pan upgrade.

CrashTestDummy
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Joined: Sat Feb 07, 2015 8:31 pm
Location: Pearland, Texas

Re: 2013 Caprice 3.6l

Post by CrashTestDummy » Mon Feb 03, 2020 10:15 pm

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
2010 Tahoe PPV (her car)
1995 DGGM Impala SS
1996 BBB Impala SS (11-second DD)
1985 Firebird - 310 LS1 C Prepared autocross car.
And some others
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xkholland
Posts: 4
Joined: Wed Jun 12, 2019 4:23 am

Re: 2013 Caprice 3.6l

Post by xkholland » Tue Feb 04, 2020 1:49 pm

Thank guys the throttle body just needed to be relearn :lol:

CrashTestDummy
Posts: 2126
Joined: Sat Feb 07, 2015 8:31 pm
Location: Pearland, Texas

Re: 2013 Caprice 3.6l

Post by CrashTestDummy » Tue Feb 04, 2020 4:09 pm

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
2010 Tahoe PPV (her car)
1995 DGGM Impala SS
1996 BBB Impala SS (11-second DD)
1985 Firebird - 310 LS1 C Prepared autocross car.
And some others
Do YOU have my SPID?

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