2007 Dodge Caliber P0420 - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums

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post #1 of 2 Old 05-23-2016, 08:10 PM Thread Starter
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2007 Dodge Caliber P0420

Hi everyone

I'm new to this but hopefully you guys can help me.
Well, I just got a engine light and it reads P0420

When I drive my car it forces the RPM's
I barely hit 20MPR and the RPM almost hits the 3 mark. Any advice you guys can give me on what it could be. Any advice would help.
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post #2 of 2 Old 05-24-2016, 04:40 AM
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Welcome: and let everyone know the outcome so thread is not left hanging! (unconcluded threads are of little value to anyone); hopefully this helps get you started


99 1500 SLT QCSB 4x4 5.2 227k mi; SUN vac ga, tow hooks ... umpteenth 46re, LONG 28K lb tr cooler, HAYDEN temp ga ... 3.55 c/w broken clip, 255/70 MICH M+S ... RED HEAD, DSS, MOOG trac n adj BJ; AMS in motor n diffs; HUSKY flr mats ... New shocks, drums, EXTREME rotors, bat; rebuilt mas cyl, alt ... Recent windshield, rad, rr springs, frt axle joints n seals ... Hand vac pump to control recirc door

97 1500 SLT CCSB 4x4 5.2 auto 3.55 lsd, factory tr cooler, HD fan clutch; 140k mi
--Both have spray in box liners; need PS coolers, htr cores and better water pumps for htr/winter use
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