LT1 EFI Question

[Ron Tyler]

> How did you defeat the VATS to be able to start the engine?  There are


   I wired the VATS module into the car. I gutted out a spade fuse and
soldered in the proper resistor and epoxied it back to original shape. I
installed the holder out of view under dash. When I park in risky
territory, I just pull the "fuse".


> seriously un-happy PCM is a fan-on condition.


   I tried the "Key-on" for about 90 seconds. Nothing. I started the car
and 28 seconds later the fan came to life. It seems to be a consistant
time period.

   The PCM has never been reprogrammed.


> 
> Does your scan tool indicate "FANS: YES" for the fan status?  Of course, I
> don't know what you are using for a scan tool.  Make sure that the PCM is
> really commanding the fans.  Are both fans on?
> 
> Besides the fans, how does the car run?  Is the real-time data from your
> scan tool reasonable?
> 
  The scan tool is an AutoXray Xp240. It does indicate "fan: on". The
realtime data seems reasonable. I am only running the primary fan. The
car seems to run very well, although slightly better somtimes. The one
thing that I have noticed that doesnt seem right (other than the fan) is
the idle seems to take a while to settle in. In other words, When you
start the car, It runs a low rpm (mabey 1100). As it warms, it raises to
as high as 1500. But even after the car is fully warmed, you come to a
stop, engage clutch, and its still idling 1300, and then slowly drops to
around 1000. By slowly, I mean several seconds. It never matches the
requested RPM. 

Thanx Again
-- 
Ron & Stephanie Tyler
'72 LT1/T56 240Z
http://www.whit.org/jcaudle/LT1-3.jpg