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Old 10-22-2002, 01:41 PM   #1
8Complex

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04 FXT
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Default Standalone and misfiring after fueling up...

So after I hooked up my Haltech, I got a strange misfire for 3-4 minutes after I restarted it after fueling up. Didn't matter if there was 1/4 tank left or it was completely empty. Pulling the gas cap still didn't make it misfire, so it had be to fueling up.

I finally solved this problem this weekend. I installed my secondary intake manifold with 440's and a parallel fuel line mod, removed the purge control solenoid and all the extras, and capped all the extra lines.

Just fueled up a few minutes ago and lookie... no problem! Damn purge control solenoid was causing a misfire, I'm guessing from auto matically releasing into the manifold after fueling up and starting. Doh!

Well, this is just an FYI in case anyone else has the same strange problem. I'm probably the only freak that went through and reconnected all the grounds that had been connected with the stock ECU, but you never know.
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Old 10-22-2002, 11:46 PM   #2
n2xlr8n
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Location: Bama
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02 WRX MBP
It lives! ; )

Default Removal of purge cont and peripherals

Quote:
Originally posted by 8Complex

I finally solved this problem this weekend. I installed my secondary intake manifold with 440's and a parallel fuel line mod, removed the purge control solenoid and all the extras, and capped all the extra lines.
Just fueled up a few minutes ago and lookie... no problem! Damn purge control solenoid was causing a misfire, I'm guessing from auto matically releasing into the manifold after fueling up and starting. Doh!
I'm assuming with the Haltech, you're not concerned with CELs....I've been considering doing the same thing with my WRX, but until I learn more about the emission control (or someone else does it first and posts ) I'm afraid it will have to wait. I could just set the dip to eliminate CELs, but that bothers me. Any ideas?
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Old 10-23-2002, 01:51 AM   #3
HndaTch627
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Default

nick do you still have the stock ECU plugged in as well as the haltech?? and with the haltech in there the CE light isn't on

jeremy
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Old 10-23-2002, 09:51 AM   #4
8Complex

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Default

The stock ECU is actually sitting in a box in my garage, I was going to loan it to a friend to see if his CEL for his evaporative system went away as if my ECU was flashed differently then his.

No CEL's with the Haltech at all. I think you have to feed it ground, and I guess I did. Mainly I went through and fed everything that indicated it was supposed to be a ground in the pinouts, ground connection, so the only thing I have to wire up still is the AC intercept, and I was thinking I'd just connect that straight (I'm a big enough boy to reach over and turn off the switch to make sure I get the power I expect ).
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