What year is it? You might have to reinitialize the TP sensor per the service manual. Dunno, cause I can't look it up without knowing the year? If it is an older 420, take the throttle body off and clean the standoff buildup off from the throttle butterfly on both sides before you perform the procedure.
new member with a sick Rancher 420
The beast will start and idle fine but dies when given throttle and typically has a backfire. What I've done so far: 1. disassembled the fuel pump assy and replaced the filter, it was filthy..... NO JOY!. 2. After further thought and research, I purchased a new OEM fuel pump assy. NO JOY!. Starts, idles fine, backfires and dies with application of throttle. 3. Watched the FL red light flash 1 time followed by 8 flashes.... 1-8 trouble code? It's been doing this all along....I just was not smart enough to pay attention. OK, maybe I'm getting smarter(or not). But this code is not listed in the manual. Any thoughts??? Any help is appreciated.
1 - 2 of 11 Posts
Ok, take the throttle body off and clean the standoff buildup (carbon deposits) off from the throttle butterfly on both sides before you perform the initialization procedure.
Clear all of the codes.
Initialize the TP/MAP per the instructions in section 6 of the service manual.
Let us know how it goes if you can.
Clear all of the codes.
Initialize the TP/MAP per the instructions in section 6 of the service manual.
Let us know how it goes if you can.
1 - 2 of 11 Posts
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