Enrogersgm
Newbie
- Joined
- Jul 17, 2012
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I just got an old farm truck this weekend and the SES light came on the day after I picked it up. I pulled the codes and three came up: P0300, P0420 and P0420PD. The truck is a 1997, K1500 4.3L with 120,000 miles on it. Any thoughts? One other thing that is strange is that I took it through a car wash before I drove it home and the truck stalled out in car wash (during the underbody wash cycle). It misfired like crazy for a good 15 minutes and then ran fine again.
Does the following make sense to clear the code?:
1. Replace plugs and wires
2. Replace O2 sensor
The truck has been sitting for good part of the last 2 years. I am 99.9% sure it has never had a tune-up. Is there anything else I should look at? I think it stalled out in the carwash because one of the plug wires is worn/exposed and it caused the truck to stall out. Also, it idles a little rough (not terrible) but is fine once it is moving. I did put fresh gas (and injector cleaner in it) so I think the issues are with the plugs/wires.
Does the following make sense to clear the code?:
1. Replace plugs and wires
2. Replace O2 sensor
The truck has been sitting for good part of the last 2 years. I am 99.9% sure it has never had a tune-up. Is there anything else I should look at? I think it stalled out in the carwash because one of the plug wires is worn/exposed and it caused the truck to stall out. Also, it idles a little rough (not terrible) but is fine once it is moving. I did put fresh gas (and injector cleaner in it) so I think the issues are with the plugs/wires.