i have a e6k that has bad secondary injector drivers. anybody know a place that can repair w/o sending the unit back to haltech? i dont have a month to spare!!!

MWW

 

no, how do you know the secondary "drivers" are bad? Haltech is the only source I know of or would trust.

 

secondary injectors will not come on and i have replaced them and checked every other option. moved the stage bar down, unplug the injectors and it runs the same, if i move the stage bar up adn increase milliseconds it runs great until the secondaries are supposed to come on. my only other option is to run all of the injectors off of the primary drivers and control them by using a PWM output on the positive side of the injector via a relay. the only thing i am worried about is if the haltech can control two FD injectors per driver without burning up . anyone know if this is possible? maybe a resistor of some sort will work.


MWW

 

try running them unstaged or switch the secondaries and primaries to verify it is the ECU. seems odd the primaries would work and the secondaries would not. did you mix high and low impedance injectors? not sure if you can or can't but I would check first. verify that no signal is going to the injectors(tools are available from automotive parts shop to test the injector signal). and my one suggestion for alot of issues on this board, check and verify all wiring. this is the one item that catches people all the time.

 

no signal to the injectors!! it is a terminated harness . i took the ECU out of my race car and it works fine so i know it is the drivers. :-(

so now ....how can i wire them another way? can you run stock injectors in parallel w/o burning up the primary drivers?

MWW

 

don't run the injecotors parallel...you increase resistance and yes you will burn up the primary drivers....there is a couple electrical shops that could go in the haltech unit and replace what is burned out ...but i would ship it back to haltech .....if you bought through ari i am pretty sure he has a loaner unit you can use....

 

ok y'all i got it to work. since the OEM injectors are high(13.8) impedence you can run them in parallel without damaging the ECU!! it is the low impedence injectors that will damage the ECU if you run them in parallel. if you run the OEM injectors in parallel the ECU only sees 6.9 ohms of resistance. now to trigger them Haltech has an PWM option for staging injectors so i used it to trigger the secondaries. i used a relay that the PWM triggers to control the power side of the injector and tied the trigger signals together......inj1/3 and inj2/4. by keeping the fuel setup on staging and setting the PWM stage at the same number (15 in my case...850 primaries) it works like a charm!!!


MWW

 

Good to hear you got it fixed, now go hit the track!

 

this was not on my race car...but a customers street car, which still has a electrical gremlin somewhere!


MWW