Need Serious Help

[SHOracer86]

I leave for training on Sunday and of course the 91 SHO decides to act up. I changed my plugs due to a stumble at idle, muffled sounding exhaust, and slight bucking and it fixed it but now its back. I have denso iridiums in it. I ran the codes and got this : at first 11 then 14, 29, 63, 66. KOER: clear.

I am having severe bucking problems now and a incredible loss of power.
Please help

 

[riden2low]

go here and they give you the codes http://www.shophoenixproject.com/

 

[NP SHO]

11 System checks OK -
14 Ignition pickup was erratic - Ignition Systems
29 Vehicle Speed Sensor problem - VSS
63 Throttle Position Sensor (TPS) signal too low TPS
66 Vane Air Flow (VAF) or Mass Air Flow (MAF) signal low - VAF MAF
Transmission Oil Temperature (TOT) signal low (possibly grounded) - >Transmissions


The link posted previously will bring you to the main site, but the link below will take you to the page with the code definitions.

http://www.shophoenixproject.com/eec/code2.htm

Hope this helps and good luck!

 

[SHOracer86]

Ive swapped out the tps and maf for another one i had and the probems are still there. Cam Sensor?

 

[SuperHO]

that'd be my first guess..

 

[rubydist]

my first guess would be a wiring issue on the left side of the engine - many of those sensors are on the same section of wiring - I'd look that over very carefully to ensure that the ground is properly connected for that section of harness.