MIL/CEL light

[dyee]

MIL /CEL light kicks on. CTSC installed. No problems till Christamas time. Has been a problem ever since. What else can i check?

Codes P1201, P1202, P1203, P1204,P1205, P1206, P0300, P1399

New plugs
new fuel filter
new coil packs
refurbished injectors

It's bothering me and frustrating me to no end. I don't wanna keep paying money for a problem that no one can ID or fix.

 

[Daedalus]

It's flagging every injector. Maybe something's grounding out? On the older models there is a protective resistor that is common to all injectors. I wish there was a FSM online for the OBDII cars to confirm. Focus on the wiring between the ECU and the injectors, making sure the resistance values are correct. On the older cars I think it would be about 8 ohms at the ECU harness to measure both the resistor and the injector. How does the car run?

 

[drew]

Did you try a different ignitor?

Seems to be the only thing that is common to the issues.

Drew

 

[Larry Bastanza]

Sounds like a loose ground wire to me. Have seen this before with a CTSC installation. Check EVERY ground connection on the engine for tightness. Especially if right after the installation it was fine, then gradually started screwing up.

There was one other post, I cannot find it, in which the owner had the same problem, I suggested the same fix, he found there was a loose ground and all issues went away.

HTH,
LarryB

 

[dyee]

Shane and Mark from Autowave went through the entire wiring system and harness from the ECU to MAP sensor to CTSC. They heat shrunk/wrapped the connections. That should seal the connections up. It has to be something else. Where else in the line can there be a short? My car is a 1999. How many ground connections can there be? The CTSC installer didn't cut a whole circuit board full of wires and connections.

Danny.

 

[zahntech]

When the CTSC is installed there is a ground at the intake plenium neer the alternator bracket that gets moved...make sure it was not tucked away and forgoten and that it has good ground at it's new location.