Modification Question

[Hallaian42]

If you want to remove the cold start injector from the F/I setup, would you remove the air regulator and thermotime switch as well? Also, if you were to do this what do you do with the electical connectors so that it doesnt mess with the computers mixture readings and what not. What is the standard precedure for doing all this. I'm getting a cutom fuel rail and i want to elimate the cold start Injector because i think its giving me rich conditions, plus i live in So. Cal. Thanks for your help

Steve

[TomoHawk]

I believe that if you remove the cold-start injector, you can also remove the thermotime switch, and the last part of the wiring that goes to the thermotime switch, because it is just an extension and plugs in via a pair of bullet connectors near the #2 injector. I don't know if you want to cut off the bullet connectors, but it might be good to just tape them off, in case you want to reinstall the coldstart stuff. Later, if you want to remove the cold-start stuff permanently, I'd follow the thermotime/coldstart injector wires as far back to the ECU as possible and cut them there.

Where'd you get a custom fuel rail? I'm having trouble finding sources.

thx

[Bambikiller240]

Wow, a response just in the nick of time.

Question asked: 12/02

First Answer: 03/05

Hallaian42 Last Logged In: 07/04

Humor Quotient Priceless!

[TomoHawk]

Oh shut up. At least I used the search and found something related.

[Bambikiller240]

Related to What? History? 2002? Stop living in the past. Join 2005, the real deal!

(actually, I'm sure he'll appreciate the answer........if he's still alive, hasn't sold his Z, and/or hasn't gotten it fixed by now)

[Alfadog]

Hey you never know Carl, someone else might search for the same solution some time in the future. At least now we have an archived answer.

[Bambikiller240]

Oh, FVCK, nevermind!

[sblake01]

I just don't understand why anyone would want to remove components that are integral parts of the EFI system. Unless the cold start valve is bad, it will not cause the car to run rich. I also live in SoCal and the cold start system is useful, even in warm weather. Removing it will not increase the performance of a car in any way. It will only cause difficulty in starting the car anytime it's not at or near operating temperature. If people had a better understanding of how the entire EFI system worked, maybe they'd leave it alone. And as far as an archived answer goes, what good is it if it is ill advised? Unless hacking the factory wiring is good advice.

And I hear what you're saying Carl. This guy had his car up for sale 8 months ago!

[Bambikiller240]

And I hear what you're saying Carl. This guy had his car up for sale 8 months ago!

Wink, Wink, Nod, Nod!

[TomoHawk]

I have had my cold-start valve disconnected and the fuel line plugged to see if the engine runs differently. The engine does take a little longer to start when it's cold, but only about a second.

I would also agree that it's better, or easier, to leave the e.f.i. system alone, unless to do enough reading and a little tinkering to have a good ide about what might happen if you remove or disconnect things. But the simple part if the Bosch L-Jectronic system is that there are only a few sensors that the computer uses to control the engine. The rest are pressure diaphrams that act like valves, and solenoids controlled by the computer, which aren't inputs to the ECU to affect the fuel delivery.

thx