North American Turbocoupe Organization



how can I force a CEL on with the engine off??
ianbfromct Offline
Senior Member
#1
Might sound like a weird request but I have a sneaking suspicion that my CEL light is somehow rigged up to my brake light. Is there something I can unplug that would guarantee throw a CEL on my 88 tc ?? thanks
88 5 speed TC
-3" DP,lowered, 255 Walbro, Gillis valve, Cobra R's, bondo/rust, Stinger's PIMP Ecu
Reply

Not B Anymore Offline
Administrator
#2
Maybe just jumper the diagnostic plug to put it in self-test mode? There's an article for that in the tech articles.
Brian Leavitt
'86 TC 5-Speed -- MS2x w/COP | 83 lb. injectors | T3/T4 50 Trim Stage 3 .63AR | Full 3" Exhaust - No Cat | Motorsport FMIC | Ranger Roller | Ported E6 | Walbro 255HP | Kirban | 20psi | 120-amp 3G | 8.8" 3.55 rear | '03 Cobra Wheels
Reply

turbospoolin23 Offline
Senior Member
#3
Disconnect the knock sensor and start the engine. CEL should stay on.
87 TC 5 spd... 17X9 Cobra R's, .60/.63 SVO T3 Turbo, Large NPR, Manual Boost Controller, AEM Wideband, BPV, K&N Cone, Walbro 255, Kirban AFPR, 3G Alternator Conversion, Short Throw Shifter, Stinger 3" Exhaust, Magnaflow Catalytic Converter & Muffler.
Reply

Jeff K Offline
Administrator
#4
Key in RUN with engine off CEL should be on. It wont turn off until the PCM gets a PIP signal (i.e., engine crank).
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
Reply

ianbfromct Offline
Senior Member
#5
Jeff K Wrote:Key in RUN with engine off CEL should be on. It wont turn off until the PCM gets a PIP signal (i.e., engine crank).


So instead of me try to explain this I filmed my car with the Key in run with the engine off and I had no CEL on. The previous owned ran a solid state voltage regulator to the dash and im wondering if he maybe messed up something in the process..anyways check this vid out if you can and please tell me if it doesnt look right lol..
http://www.youtube.com/watch?v=NxhcvO-hVYU
88 5 speed TC
-3" DP,lowered, 255 Walbro, Gillis valve, Cobra R's, bondo/rust, Stinger's PIMP Ecu
Reply

Jeff K Offline
Administrator
#6
So. it just came on briefly when key turned to start? That is weird. Should be on whenever key is in run. Try this: start the engine. If you have a 5 speed (I think you do), use clutch to kill the engine. Does the CEL come on when the engine stalls? It should. Does the CEL flash codes when PCM is put in test mode?
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
Reply

ianbfromct Offline
Senior Member
#7
Jeff K Wrote:So. it just came on briefly when key turned to start? That is weird. Should be on whenever key is in run. Try this: start the engine. If you have a 5 speed (I think you do), use clutch to kill the engine. Does the CEL come on when the engine stalls? It should. Does the CEL flash codes when PCM is put in test mode?

It is 5 speed and what do you mean like stall it out on purpose ??

I haven't attempted to put it in test mode yet because I need to figure out how to do it lol.
88 5 speed TC
-3" DP,lowered, 255 Walbro, Gillis valve, Cobra R's, bondo/rust, Stinger's PIMP Ecu
Reply

Pete D Offline
Administrator
#8
Yes, stall it out with the clutch. See the articles in the Tech Articles for pulling the codes.
Pete Dunham


Reply

ianbfromct Offline
Senior Member
#9
Just stalled it out and the only light that came on was my brake light??? Wtf
88 5 speed TC
-3" DP,lowered, 255 Walbro, Gillis valve, Cobra R's, bondo/rust, Stinger's PIMP Ecu
Reply

Jeff K Offline
Administrator
#10
I am somewhat at a loss here...... No clue if it will help, but I would pull the cluster and clean all the plugs, terminals, etc as well as look for damaged wires, traces on the plastic PCB, etc. My wild guess is a grounding problem or shorted / damages wires / PCB traces.
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
Reply





Users browsing this thread:
1 Guest(s)



Theme © iAndrew 2018 - Software MyBB