Are there any negative long term effects of leaving the Mass Airflow Sensor unplugged?

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2006 Limited, navi option, dealer tune, Mr Gasket lift pump, Stant 13519 thermostat, Sears P1
Mopar bull bar, roof basket, pet barrier, step rails, off-road fuel cell

Not that I know of other than the constant CEL glowing at you which could mask a different CEL since it's already on.

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Sold to LOST member my 05 Ltd, GDE Stg II turbo + TCM tune, SunCoast TC w. Transgo kit, Steiger window regulators, Samcos, Fumoto valve, 2nd gen filter head with Lub. Spec. bleeder, Hayden clutch & 11 blade fan, inverted spare, P-1 battery, BF Goodrich Long Trail TAs, Etecno1 glow plugs, timing belt at 50K miles/8 yrs

funny story about the cel...

I have had mine on since I bought the jeep and did the orm. Today, while parked, I used the "torque" app on my phone to remove the cel. Fully expecting it to come back on, I hopped on the road. 40 miles later...still off. Strange things this ecu we have.

The cell will return, it will take 3 or 4 starting cycles.

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06 LIMITED 100000miles, MAGNAFLOW, HOMEBUILT CCV FILTER, POLAR PAD, 02 AIRBOX, CUMMINS LIFT PUMP, SEGR, PILLAR GAUGE POD, CAT FILTER MONITOR, SPYDER TRAX, ALWAYS A LITTLE TWO STROKE OIL OR BIO, WATER/METH INJECTION

You don't have to wait 3 or 4 cycles, it will come on the first time. Once you clear it, it will stay off only until the next time it is cycled off/on, no matter how many miles driven.

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05 CRD Limited
GDE Hot Tune
Samco CAC Hoses
OME 790 and Bilstein 916 up front
OME 948 and OME N132L in rear
245/75/16 Treadwright Warden A/T on Richard Cepek DC-2
Euro torque converter
Renegade roof lights
Pioneer Z110bt double din navi w/ reverse cam

^^ I agree....

I've had mine unplugged since I bought it, 30k ago. Just periodically check the codes.

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SOLD 11/21/13 White '06 Jeep KJ CRD<--Way to much $ spent here
84 Ranger 2.2L Perkins (Eaton Supercharger build) http://north76.proboards.com/thread/884 ... sel-ranger
89 W250 5.9L Cummins
97 F350 7.3L PSD
00 Excursion 7.3L PSD
01 F350 5.9L Cummins
(Gassers: 66 Chevelle SS, 66 Buick Wagon, 72 Nova, 80 Trans Am, 89 Bronco II)