Re: [ihc] Holley projection help

[John Hofstetter <hofs@xxxxxxxxxxxx>]

On Oct 27, 2004, at 9:19 AM, Seay Maj Matthew R wrote:

> Steve/Ryan,
>
> 	2D System, knobs on the box.  By the way, if anyone wants a spare
> analog system ECU, let me know and I will mail it to you...Hofs?
Matt, I would be delighted to have the spare box.

> 	I have tried to use the idle mixture screw to get more fuel at idle,
> but it didnt help.
Matt, how are you adjusting the idle? Are you using the 
almost-impossible-to-find little screw hidden in the throttle body? I 
had a heck of a time finding it the first time, and it still makes me 
search to find it.

I see that, like me, you have the MSD. Are you running the the ECU from 
the tach output on the MSD box rather than the distributor?

> 	I do have the O2 sensor hooked up, it is good to know that it kicks
> in at coolant temp of 75 deg.  I've unhooked it when then engine was 
> warmed
> up and it immedately flooded out.  I am a ground maniac, I've got a 
> central
> grounding block hooked at the engine, so I dont think it is a grounding
> issue.  I did have one ground come loose and I lost power/engine died 
> very
> quickly.  Took care of that issue and double checked all of the other
> grounds at the same time.
>
> 	I need to check the pressure.  I increased it at the throttle body
> from the factory set, but I dont know by how much.
Steve is absolutely right about needing a fuel pressure gauge. Rig your 
fuel hoses so that you can also check the pressure in the return line. 
It should be near zero. My rig usually runs best at about 12 psi in the 
supply line, but what runs well for me is irrelevant for your rig.

I use a gauge made for fuel, in my case a Holley. I don't know that I 
would buy one from a hardware store.

> 	Reading the tuning instructions, the first thing Holley tells you to
> do is set mechanical idle at 600 rpm.  I cant get that to happen 
> because I
> am at the high mechanical limit. Any ideas?
Matt, what you could do either as a temporary solution or as a 
permanent thing is activate the cold solenoid with a toggle switch. Put 
the power to the solenoid until you feel you don't need it any more, 
then cut the power. Some of my Jeeping friends use this same solenoid 
and a toggle switch to maintain fast idle when wheeling.

By the way, you do know, don't you, that the throttle has to be 
depressed for the solenoid to extend itself?  Forgive me for asking 
questions that might imply that I think you're not too bright, I know 
better, but then we sometimes overlook the obvious.

John

John Hofstetter
Ol' Saline
www.goldrush.com/~hofs