hornbm

Well bad news with the TII. It wont run... wont even try. Motor is not the problem. Problem is engine management.


I put the TII back together over the weekend, and finally got to turn the key... only to hear puffs of air. I started poking around and doing the usual checks figured I just missed something. I found I have spark (checked with a timing light) The fuel pump IS running when its cranking, so that means the ecu is reading the air flow meeter. Theres fuel in the fuel lines, but no matter WHAT I do, the injectors wont fire.

Not a drop of fuel will come out of those injectors. I checked the wiring, and My resistance is correct from the resistor pack plug back to the ECU plug is 2.4-2.5ohms which is correct for low IMP injectors. All lines from the restor pack read around 6 ohms, which is correct. I have power going to the resistor pack to power the injectors. I also put connector plugs on the wiring harness for the injectors. the first time I connected the injectors I accidentally crossed the leads and put positive on negative and negative on positive on the injectors. From what ive heard and read this should have not have hurt anything. That has since been fixed

I tried addind additional grounds. Did nothing.

The ONLY odd ball thing that happens with the car is not all the warning lights come up on startup like theres a bad alternator connection to the two prong plug. But I dont see how this would keep the injectors from firing.

Ive also done a complete emissions removal on this car (s4) All remaining vacuum ports were properly capped off and new silicone lines were run to the sensors that needed them.

I cannot for the life of me figure out what the hell is going on... it makes NO sence, logically theres nothing preventing the injectors from firing.

Anyway im seriously about to call up gary and have him install a microtech on my car and be done with it. Or pay someone to fix what I got now...

Any ideas? Ive tried EVERYTHING

Ive also changed a few ecus

Eternal_Gamer

iTrader: (10)

try air flow meter. i had the same problem.

hornbm

but i drove the car into my garage to rebuild the engine, it obviously worked at one point.

hornbm

well im going to try some different injectors today, if that doesnt work, Gary Brooks will be taking a look at it, and if he cant figure it out, its Microtech time!

hornbm

bump

HAILERS

Are you real sure that you have the fuel lines connected to the engine right?? Don't have the pressure and returns crossed?

Pull the RETURN line off. Jumper the fuel pump check connector and turn the key to ON for a moment. Fuel should have flowed out the return line you disconnected.

The fuel pump runs if the engine is running. (2) if the key is HELD TO START. (3) If the fuel pump check connector is jumpered and the key is to ON.

IF the key is to ON, and you backprobe any of the wires for the fuel injectors AT the ECU, do you get batt voltage?

IF it's a series four, and you pull the small plug off the ECU and measure resistance with a ohm meter, what do you see for the three gnd wires? Should be less than an ohm for the gnd wires. Key to OFF please when you do that, for an accurate reading. Use one of the ECU mount studs for your negative lead or run the neg lead to the batt neg if your leads are long enough.

But if you have spark, I'd think you'd have an input to the primary injectors since they both rely on the cas for an output to the ECU.

Aftermarket ecu? Bah. Bull