My 99' does not do this and is stock. My 00 does. WTF?

 

We did about 40 or so runs on the dyno with the OBD2 hooked up as well as a breakout box and emulater and a A/F meter. And the truck did this every time.With 6 psi I could barely feel it then I went to 9psi.and there it was now I'm at 12 psi. and it is really bad.The only thing I changed was the power the truck made and this got worse.With the blower belt off it does not do it at all,and thats leaving the chip in and injectors the same.It's driving me crazy!!


Is there any kind of retard or delay that ford builds in right before TC. locks up?



[This message has been edited by XanMan (edited 06-05-2001).]

 

Here's some dyno results from an 01. I can't see anything around 4200 rpm.



------------------
The truck:
Teal 1997 XLT flareside with 4.6L, auto tranny, electronic shift on the fly, 3.55LS and 4x4 ORP.

Performance mods:
Gen. 2 K&N FIPK
Superchip(removed until further notice)
True dual exhaust exiting out the back
2.5" pipe with 18" glasspacks and 18"x4" round chrome slash cut tips

Appearance:
White face gauges
Euro clear corners
01L headlights
Covercraft tonneau cover
Billet pedals
16" Modern© wheels
265/75r16 Wild Country Radial TXR tires
Factory tinted rear windows
Bug deflector
Euro clear corners

Sound system:
Clarion ADX5655z Double Din Cassette & CD
4 Pioneer TS-A6865 speakers

Other:
Bedliner
Bulldog keyless entry/remote start

n6260k@cs.com



<A HREF="http://www.f150world.com/v8speeddemon" TARGET=_blank> </A>

[This message has been edited by King James (edited 06-06-2001).]

[This message has been edited by King James (edited 06-06-2001).]

 

Interesting.... If it is the torque converter locking out maybe there is no loss in power at the wheels, it only seems like a dead spot because the engine is dropping rpms and increasing it's load.

I guess you are just losing power before it locks out the converter (probably in the form of drivetrain losses --- heat).

I would still love to hear from some tuners on this issue.

Any other 01L dyno plots out there?

 

The lock-up feature in the converter is NOT the same as the stall speed.There is actually a clutch in the converter that performs the lock-up function.

 

I didn't think to put this up the other day. When I'm cruising along at 70 and give it some gas it will drop to 3rd. Give it some more gas the rpm's will go up then back down about 300 without me letting off the gas or anything. I never noticed how many rpm's it's running at before it drops.