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Schrade · 02-01-2014

Alright - I just did another recording, from cold start Open Loop.

It DIDN'T lope between 1.6% TO, and 2.4% TO, as it usually does!!!

Rock steady idle, up to 1.6% TO, turning the throttle stop screw with the 8mm wrench, and it went from 1.6% - to 2.4% TO, withOUT a lope. RPM's bumped up quickly, and backing off with the screw, still couldn't get anything in between, but no big deal.

(it will not register any TO percentage between 1.6 - 2.4 under any circumstances, even tho' TPS voltage goes up smoothly - I don't think that's any issue)

Just then, it went CL, and as usual, it loped from 1.6 - 2.4 TO.

SOME parameter introduced in CL is causing the irregularity from 1.6% TO, to 2.4% TO.

ed.:
Yes - I'm aware that Open Loop readings don't mean much. All the other recordings are in CL. But something need a little closer scrutiny here...

02-01-2014	#200
Schrade Join Date: Dec 2012 Location: NC Posts: 1,783	Re: 1990 Throttle hesistation Alright - I just did another recording, from cold start Open Loop. It DIDN'T lope between 1.6% TO, and 2.4% TO, as it usually does!!! Rock steady idle, up to 1.6% TO, turning the throttle stop screw with the 8mm wrench, and it went from 1.6% - to 2.4% TO, withOUT a lope. RPM's bumped up quickly, and backing off with the screw, still couldn't get anything in between, but no big deal. (it will not register any TO percentage between 1.6 - 2.4 under any circumstances, even tho' TPS voltage goes up smoothly - I don't think that's any issue) Just then, it went CL, and as usual, it loped from 1.6 - 2.4 TO. SOME parameter introduced in CL is causing the irregularity from 1.6% TO, to 2.4% TO. ed.: Yes - I'm aware that Open Loop readings don't mean much. All the other recordings are in CL. But something need a little closer scrutiny here... Last edited by Schrade; 02-01-2014 at 04:47 PM.