4l60 issues

velox65 · 10-13-2009, 09:08 AM

Ok I got some problems with my trans, 6.0lq4 and 4l60 swap in a 96 bird. Problem is i don't seem to have first gear or overdrive. 3-2 and 2-3 is fine seems like second gear start is active. Tranny has a b&m shift kit but is otherwise stock, throwing codes but haven't scanned it yet to be sure. Ideas?

velox65 · 10-14-2009, 09:13 AM

Bump, worked on it some last night, some pins came out of the connector, fixed those and now it works perfect some of the time other times it will lose 1st and od again. Ideas?

performabuilt · 10-14-2009, 10:03 AM

You need to clear codes then drive and scan them . Could be electrical. Could be the solenoid, Could be a tuning issue. Need codes to determine where to look

velox65 · 10-14-2009, 11:46 AM

Ok I'll try and get my scanner back from the neighbor and let ya know

velox65 · 10-17-2009, 01:35 PM

Ok here's the codes,
po134- don't use o2s on my car
po154-o2 again
po713-
po740-
po753-
po758-
po785
and p1860.

Speedometer was off some(would uss cause problem with speed?)
tach is off(v6 to v8 swap)
at 60 tach reads 5k with 4.10s.

performabuilt · 10-17-2009, 01:43 PM

I would be checking fuses and wiring the codes indicate theres no B+ 12 to the trans.

velox65 · 10-17-2009, 02:54 PM

I ran a test light on the solenoids and grounded them at the PCM and they all clicked so it seems like they are getting power expect for the torque converter lockup one ?

velox65 · 10-18-2009, 01:26 PM

Bump..

velox65 · 10-19-2009, 07:40 AM

Bump for the morning crew, need advice on this, this is the only thing holding me back from tieing up this swap and getting my exhaust on.

velox65 · 10-20-2009, 09:05 AM

Bump again

velox65 · 10-20-2009, 11:08 AM

Ok here what it's doing, when you first start the car and roll I have 1st but once it shifts it won't drop back down same way with the overdrive. Thought it could be a tach being off but the tuner says no. Ideas

velox65 · 10-21-2009, 03:15 PM

No one has any Input? This problem is driving me nuts, could the shift kit be improperly installed causing these problems, any ideas are entertained at this point.

velox65 · 11-04-2009, 09:03 AM

Ok got the PCM retuned, while it changed the problems in a way, it's still there, when I first start it and drive it shifts perfectly, but once I stop it doesn't drop down back to first unless I sit a while in neutral or shut off the car, if I don't do that it'll start off in 2nd or even 3rd according to my scanner, this is driving me nuts, point me In the right direction guys and gals trannys aren't my thing at all.