cluosborne

I have an 1988 N/A, and I'm having the injectors cleaned, balanced and blueprinted at Marren Fuel Injection.

I got a call today that I have two low-impedence injectors and two hi-impedence injectors. What I'm wondering is if there is a 10ohm 10-watt resistor wired inline, how I do measure for it with a multimeter?

If there isn't, what would be the result of running a low-impedence injector on a hi-impedence ECU harness without the resistor? Would the computer fail, or would the engine run lean causing loss of power and detonation?

I should point out that the injectors have never been replaced since I got the car in May 2001 (I have no documentation before that), and the computer always seemed fine.

rxse7en

Unless you have a standalone ECU, the mixed injectors could fry your stock ECU if the resistors are not inline. You can measure the resistance at the injector plugs. More info on injector impedance: http://www.rotaryresurrection.com/injector.html

cluosborne

No no no, I already know two of the injectors are low-imp, and the other two are high. I spoke to a rep from Marren Fuel Injection (he called this morning).

I just want to make sure that there are resistors spliced in line, how can I make sure of that?

cluosborne

No no no, I already know two of the injectors are low-imp, and the other two are high. I spoke to a rep from Marren Fuel Injection (he called this morning).

I just want to make sure that there are resistors spliced in line, how can I make sure of that? The ECU harness is presently out of the car.

J-Rat

iTrader: (2)

Your probably just going to have to look for the resistors. 2 most common places are by the injectors or by the ECU.

And your injector drive circut seems to be intact after 3 years of running mis-matched injectors, so I would GUESS that someone took the time to install resistors.

cluosborne

Probably true. I just can't verify it because I have no records, nor did I pay close enough attention when I rewrapped the wiring harness.

Well, I'll find out soon enough.

Thanks.

rxse7en

You need to check the resistance at the plugs to make sure you don't put the wrong injectors on.