IAC relies heavily on VSS, so do many other things in program. Throttle follower behavior is another.Blake wrote:thats cool
I've always thought about installing a VSS on the Atlas 4spd which has provisions for a speedo (currently capped off). I've noticed that when 'wheeling (all that it does) and you are lugging the engine it will sometimes have a high idle for a brief period after the 'lugging' is over. Imagine it being under load then clutching it: the idle will be a bit high for a few seconds, then back down to normal. I've often wondered if a VSS would help with that.
yup, that is pretty much what I've always thought.babywag wrote:IAC relies heavily on VSS, so do many other things in program. Throttle follower behavior is another.Blake wrote:thats cool
I've always thought about installing a VSS on the Atlas 4spd which has provisions for a speedo (currently capped off). I've noticed that when 'wheeling (all that it does) and you are lugging the engine it will sometimes have a high idle for a brief period after the 'lugging' is over. Imagine it being under load then clutching it: the idle will be a bit high for a few seconds, then back down to normal. I've often wondered if a VSS would help with that.
For a trail rig probably not big deal to not run VSS, on a street rig, driveability would suffer in several ways.
I have a simplified wiring diagram for TBI posted somewhere on here. Has helped several folks with install/questions/etc.
I never said to use zero degrees base timing. :- )dodgerammit wrote:Install dizzy at 0* base timing and start from there.
The VSS is useful should I want cruise control, though, right? Stock soup can is inop.
I live at 1100 ft, so I'll play with timing once I get to that point.FSJ Guy wrote:I never said to use zero degrees base timing. :- )dodgerammit wrote:Install dizzy at 0* base timing and start from there.
The VSS is useful should I want cruise control, though, right? Stock soup can is inop.
I have always used at least 10 degrees base timing. When I tried to use zero base timing, my engine would idle horribly when trying to set the initial timing.When set to 10 degrees, it was much happier.
You MUST program your base timing into the ECM, too. IIRC, It's labelled as initial timing in most of the definitions.
The VSS has NOTHING to do with your Jeep cruise control. But I like running the VSS anyway, for improved drivability.
Can you still get the 2PRS from JTR? They were discontinued for a while, I thought. Maybe they're back....
babywag wrote:My '88 has been low priority for 3-ish yrs. lol just now getting back @ it, so yeah understand the low priority thing!
Anyway here's the diagram...
http://www.fsjnetwork.com/forum/viewtop ... =35&t=5099
OP doesn't, and is talking about running stock prom/tune.Blake wrote:Ethan lives at 5200 feet....