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03-23-2019, 02:54 PM
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#1 |
 Drives: 2010 Camaro RS 2LT Join Date: Jun 2016
Location: Chicagoland
Posts: 2
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2010 2LT V6 MPG Dropping
My Camaro used to get really good gas mileage but has been dropping and dropping to now only getting 18mpg blended. What can I check or service to get somewhere near a few years back? Closer to 23mpg?
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03-23-2019, 03:23 PM
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#2 |
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376 cubic inches of fun
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What is "blended"?
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03-23-2019, 04:13 PM
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#3 |
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Drives: 2010 Camaro RS 2LT Join Date: Jun 2016
Location: Chicagoland
Posts: 2
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City/highway
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03-23-2019, 04:26 PM
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#4 |
   Drives: 2011 2SS/RS Join Date: Feb 2016
Location: Jacksonville FL
Posts: 1,190
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Tips:
1. Stop flooring it 2. change your air filter 3. Use better gas, 4. tire pressure/alignment check 5. clean the intake valves (not quick) blame direct injection
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•2011 Camaro SS 2SS/RS A6
•MRR M017 1le Replica Wheels •Vararam Ram Air Intake •Speed Engineering Longtube Headers w/ Magnaflow HF Cats •Bo White PnP Stage 2 TB •GPI SS2 VVT Cam w Cometic thin gaskets 10.69 compression •Xpipe w/ Res Delete and NPP Exhaust •Tuned By Anonymous Calibrations •Gen5DIY Mylink Conversion W/ Backup Cam •Morel 3 way custom speakers, Infinity 860w Subwoofers in trunk baffle •Helix P6 6ch amp w/ 8ch DSP and P1 Sub amp |
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03-23-2019, 05:53 PM
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#5 |
 Drives: 2012 Victory Red LFX Join Date: Dec 2012
Location: west central Texas
Posts: 1,310
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How many miles on the car?
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2018 SS wheels, red Heritage grille, actual driving lights, ZL1 strut tower brace, GM Performance billet aluminum fuel door, front grille Bowtie delete, painted red rotors and calipers, 1/4 window American Flags, splash guards, AEM dry panel air filter.
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03-23-2019, 08:52 PM
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#6 |
   
Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012
Location: Southeast, PA
Posts: 2,085
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Pull a plug or two and make sure they aren't completely covered.
I noticed that I was running rich for a little while, and then my high-pressure fuel pump went in the engine. Then it was just dumping fuel through it. It was not a cheap repair.
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LS3 Crate Engine Swap | CSP Custom Cam 232/240 .615/.615 113 +3 | Stainless Power LT Headers | Z28 Intake | Borla S-Type Exhaust | FTI Triple-Disc Billet 3200 Stall
2012 Camaro 2SS/RS | 1968 Camaro SS | 2020 Cadillac CT5 Premium Luxury | 2021 Spark LS  |
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03-24-2019, 11:34 PM
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#7 |
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Angewendet Ingenieur
Drives: 14 Camaro ZL1 Join Date: Apr 2015
Location: USA
Posts: 401
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Check your 02 sensors.
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 ————LQ9, Iron Block, Forged internals, 408CI, Jannetty custom cam, TS short block, Whipple, Hardened Jackshaft, PRC 260, 2X3 Dynatech Full Competition, HF Cats, CAI, NW 103, Chee, ID 1300, COPO Breather, MSD, Fore Dual Pump, ultratorque, E85, dual Meth, True Trac, 3:45, 1500hp axle-shafts, DSS CF, BMR, custom Pearl/Candy paint by Jaidah. |
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03-25-2019, 07:25 AM
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#8 | |||
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376 cubic inches of fun
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Quote:
Quote:
Quote:
You're not buying E85, are you? |
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03-25-2019, 10:44 AM
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#9 | |
Drives: 2013 SW 2LT/RS LFX/AY6 Join Date: Feb 2013
Location: Orlando, FL
Posts: 1,741
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Quote:
Starting to wonder if I'm having a similar issue. I don't think the car is running richer than normal but my gas mileage is awful (like OP, used to average over 22, now I barely get 24 on the highway it seems). Any other symptoms to look for? I could data log but I don't know how to read it. lol
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K&N CAI, 1LE Strut Tower Brace, Elite Engineering Catch Can and Clean Side Separator, Apex Scoop w/ Washer Relocation Kit, CTS Front Calipers and Rotors, JacFab Ported Intake Manifold, JacFab Intake Manifold Spacer, 80mm Overkill Throttle Body, SS Brake Lines, Ideal Garage Master Cylinder, Monster Twin Disc Clutch, NPP Retrofit w/ Magnaflow Resonated X, ARH Catless Downpipes, JRE Built 3.45 Diff, 1LE Axles, 1LE Hubs, Overkill Tuned, BMR Anti Wheel-hop Kit Stage I, ACS TL1 Hood Insert, ZL1 Spoiler
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03-25-2019, 11:20 AM
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#10 |
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Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012
Location: Southeast, PA
Posts: 2,085
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It's honestly very easy to pull plugs on these engines. I would pull 1 from each bank to make sure they aren't completely black, and monitor oxygen sensors data.
Here's what my plugs looked like versus the new ones I put in, when I was having the issue with the fuel pump:
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LS3 Crate Engine Swap | CSP Custom Cam 232/240 .615/.615 113 +3 | Stainless Power LT Headers | Z28 Intake | Borla S-Type Exhaust | FTI Triple-Disc Billet 3200 Stall
2012 Camaro 2SS/RS | 1968 Camaro SS | 2020 Cadillac CT5 Premium Luxury | 2021 Spark LS |
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03-26-2019, 11:27 AM
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#11 |
   
Drives: 2010 Camaro 1LS 3.6 LLT V6 325 HP Join Date: May 2009
Location: LS
Posts: 4,242
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I have been running this LLT close to 10 years. I always loose mileage when they come out with the winter gas formula, then it messes up your fuel tables even into the spring.
Here is how to get it back. 1) Always run top tier fuel. 2) Pull fuse 5 & 20. 3) Clean throttle plate and mass air flow sensor (special CRC cleaner) 4) Put fuses back in and watch mileage go back up. I can do 33-34 all highway on summer fuel.
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2010 Camaro Auto, Inferno Orange, Titanium Interior, Gearhead Wheels AIRAID CAI
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| Tags |
| fuel, gas, gas mileage, mpg, mpg fuel economy |
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