North American Turbocoupe Organization



Running codes question....
Matt S Offline
Posting Freak
#1
Sitting here on the night shift, I'm planning my attack on finding the rough running problem.

From the tech articles, what does Jeff mean by the "activators" test? Also, the book that came with my code reader says to turn the steering wheel - we don't have a PS pressure switch though, right? Also, I am not able to get it into the cylider balance test like the book says (floor throttle after code output). Jeff's article doesn't mention it, so does that mean it's not a feature of our system?
Thanks again.
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Jeff K Offline
Administrator
#2
Here is the low down....

Our cars fo not have the PSPS, so no need to turn the steering wheel.

The power balance test only works on SEFI motors, like the 5.0s, not on batch fire motors like ours. The power balance test works on SEFI by the EEC holding a fixed duty cycle on the IAC, and shutting off one injector at a time, and noting the RPM drop. A high tech version of the old time "pull a plug wire and listen for the RPM drop" to locate a dead cylinder (all you old timers remember doing this I am sure!).

By "activators", you refering to the output state check, right? After the KOEO codes have been outputted, a WOT will turn on all the activators, like the EVR solenoid, IAC, etc. By activators, I mean any output device controlled by the EEC, as opposed to sensors, which send info to the EEC. A secont WOT will shut all the activators back off.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 20 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 02 Taurus Vulcan(wifes car)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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Matt S Offline
Posting Freak
#3
Activators. Gotcha. That could come in handy. And that makes perfect sense about the injectors.

I do remember shocking the shit out of myself once doing the old timer method. [Image: eek.gif]
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