Mbeas96
Member
- Joined
- Aug 7, 2017
- Location
- Charleston
90 745 lh2.4 16t 15psi, chipped computers and a newly installed wideband o2 sensor and gauge.
While cruising at any speed, it usually happens higher, but it will happen anytime while cruising...the afr s are perfect, bouncing between 14.4 and 14.9 but the car will stumble randomly and the AFRs are climbing from at least 10.0. (Aem uego wideband, only reads down to 10).it climbs back to around 15.3ish never higher and then settles back to 14.7ish...
Another issue that might be related...from idle to any kind of real throttle input afrs drop down past 10.0 and the car stumbles for a second. In WOT high rpms it pulls great. Aw71 with the accumulator mod will rip the tires shifting into 2nd. The initial stumble, ive read could be a dead o2, but IIRC that was for a lean spike.
Im not sure how to test anything really as it idles smooth, right at "stoich" and in boost and when boost is rising its great afr s drop down to between 11.9 and 12.8. In later gears high rpm it'll go to 13.1 or so, but that's a different problem.
While cruising at any speed, it usually happens higher, but it will happen anytime while cruising...the afr s are perfect, bouncing between 14.4 and 14.9 but the car will stumble randomly and the AFRs are climbing from at least 10.0. (Aem uego wideband, only reads down to 10).it climbs back to around 15.3ish never higher and then settles back to 14.7ish...
Another issue that might be related...from idle to any kind of real throttle input afrs drop down past 10.0 and the car stumbles for a second. In WOT high rpms it pulls great. Aw71 with the accumulator mod will rip the tires shifting into 2nd. The initial stumble, ive read could be a dead o2, but IIRC that was for a lean spike.
Im not sure how to test anything really as it idles smooth, right at "stoich" and in boost and when boost is rising its great afr s drop down to between 11.9 and 12.8. In later gears high rpm it'll go to 13.1 or so, but that's a different problem.
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