SupraSport

Guys,
I got my 89 4runner back and running from a blown headgasket and now it has no power. Throttle response is almost zero.

I know 100% that the timing chain, cam gear, and distributor were installed correctly. I tuned the timing by idel first and idels OK but timing is at 20 BTDC!! I can adjust it as far as 15 BTDC with the adjustment room I have on the distributor, but idels poorly. When I jump the diagnostic box to do the timing(T and E1) there is no difference in the idel, the idel should drop. I also have one code coming up:

51-
IDL (tps) CONTACTS OFF, NEUTRAL START SWITCH OFF, A/C SWITCH "ON" SIGNAL TO ECU
--A/C SWITCH/CIRCUIT
--A/C AMPLIFIER
--TPS/CIRCUIT
--NEUTRAL START SWITCH/CIRCUIT
--ECU

I think my problem is the TPS. Anyone experience something similar? I'm going to go bench test the TPS now. Any advice would be great.

Thanks
Aaron

*NOTE- before I reset the ECU (Removed neg terminal) I was also getting code 42-
VEHICLE SPEED SENSOR SIGNAL CIRCUIT--NO SPD. SIGNAL FOR SEVERLA SECONDS WHILE VEHICLE IS OPERATED UNDER HEAVY LOAD (TPS/MAP/AIR FLOW INPUTS)
--SPEED SENSOR/CIRCUIT
--ECU

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My Projects

An unhealthy 7MGTE and 22RE obbsession

Projects:
1988 Supra NA->Turbo
1989 4runner 22re 8" Suspension IFS 22RE
1989 RX-7 getting a LS1 T56 swap =)
1989 17' Rinker bowrider Inboard mercruiser