Brad474747
New Member
- Joined
- Nov 29, 2015
- Messages
- 15
- Reaction score
- 0
- Points
- 0
- Vehicle Year
- 1994
- Make / Model
- Mazda
- Transmission
- Manual
I've got a 94 B4000 and I've been having some issues with my CEL (consistently lean bank 1, code 172) no matter how many times I've replaced the o2 sensor it'll still pop that lean code... I didn't have that issue with bank 2, flip flopped the o2 sensors (formerly bank 1 to bank 2 and vice versa) and the sensor that WAS good and not throwing a code on bank 2 threw the same lean code on bank 1. And the original bank 1 sensor that I moved to bank 2 still threw the lean code (136)
It also pings quite a bit above 2500rpm on acceleration under load and I can't even make it to interstate speeds without it pinging, or even maintain any speed higher than 55 uphill without pinging
We just got it back from the shop where they replaced the passenger head, but they couldn't get their code reading computer to link with the ECM to pull the codes, the mechanic told me he wouldn't be surprised if there was an issue with the ECM
I'm at a loss here, we've been chasing the CEL for over a year now, where do I need to start to nail this down?
It also pings quite a bit above 2500rpm on acceleration under load and I can't even make it to interstate speeds without it pinging, or even maintain any speed higher than 55 uphill without pinging
We just got it back from the shop where they replaced the passenger head, but they couldn't get their code reading computer to link with the ECM to pull the codes, the mechanic told me he wouldn't be surprised if there was an issue with the ECM
I'm at a loss here, we've been chasing the CEL for over a year now, where do I need to start to nail this down?