Join Date: May 2007
Location: Parlin, New Jersey
Trans OSS signal starts dropping after 5500Rpm
Problem I'm having and it PISSING ME OFF.
If I'm at WOT and go past 104MPH the car like all of a sudden drops out of gear. I data logged it and I noticed that the MPH would go up and the corrected MPH would start counting down once past 102MPH. When the corrected MPH would get to about 57MPH it would command 2nd gear and there's where the problem starts. I started data logging the OSS and that's when I noticed the drop in shaft speed after about 5500RPM. I already replaced the OSS and went over the tune with a fine tooth comb. What am I missing?
Anybody else have or had this problem before?
Specs are 94 T-Bird, PI swaped heads and intake 4R70w Trans out of a MarkVIII 3.73 gears and a A5W0 ECM. I can send my bin and data log to any ody that wants to take a look.
I've come into this world with nothing and still manage to have some of it left.
ASE Master Technician and Advanced Level Specialist.
It's not what I know, It's knowing what I don't know.
1994 Thunderbird, 4.6 V8, PI heads, SVO Blower, 8# pulley, 2.5 duel exhaust, 4R70W, MarkVIII converter, Mark VIII differential, Trac-Loc, 3.73 gears, H&R 1.5 lowering springs, bilstien rear shocks and SC front struts.