Codes

[Bob Gervais]

Ogmz!!

 

[hawkeye18]

Aw ****, time to turn in your tools.

 

[SeanMc]

Weird thing though, I drove 80-ish miles without any issues the other day. Then I go from my place, to Orange, then to LAX without any issues (about 40-ish miles), but when I go from LAX to my friends place (10 miles), it all goes to **** on the way. Coming home after having the car off for a couple hours, it started acting up only after about 20 minutes, and did so the entire way home (40 miles).

 

[Bob Gervais]

I'd start looking for a bad harness or connector somewhere. Quite a few months ago, I worked on one that had intermittent issues sort of like this. Turned out to be a bad connector/harness at the coil pack.

 

[SeanMc]

I'd start looking for a bad harness or connector somewhere. Quite a few months ago, I worked on one that had intermittent issues sort of like this. Turned out to be a bad connector/harness at the coil pack.

Thanks...

You know, my CCRM did fry recently, so I'm wondering if it took out, other than the fuel pump, some stuff with it. I wish I could turn my car into a jet and come over to NESHO.

 

[Bob Gervais]

And I wish I had the dough to fly out there... I could use a vacation.

When you say fried CCRM, what happened? Stuck relay?

 

[SeanMc]

And I wish I had the dough to fly out there... I could use a vacation.

When you say fried CCRM, what happened? Stuck relay?

About 8 of the holes on the connector were black. My car just completely shut off, and would not restart.

 

[Bob Gervais]

I'm starting to wonder if there's a shorted harness somewhere that took out the CCRM....

 

[ShadetreeSHOguy]

hey Sean didnt you have a harness issue once before?

 

[SeanMc]

Ok, confirmed that this isn't a misfire, but it idles like a 454 with a giant cam when warm which causes hesitation below 3500rpm, and it starts drinking gas like Ryan Dunn drinks alcohol before driving home.

Chris, yes I have. That was when I wasn't getting any power to the front o2 sensor, and an injector wasn't working.

 

[rubydist]

maybe the injectors don't want to shut off once they are hot.....? something like that could result in both lean and rich codes being set - the pcm could adjust the fuel trims way down when the car is hot and then its too lean when cold. just a crazy idea.....

 

[SeanMc]

maybe the injectors don't want to shut off once they are hot.....? something like that could result in both lean and rich codes being set - the pcm could adjust the fuel trims way down when the car is hot and then its too lean when cold. just a crazy idea.....

So are you suggesting I should still swap the PCM?

 

[rubydist]

I would do the pcm first, if you can find a pcm to swap.

 

[RAYJAY]

ok, confirmed that this isn't a misfire, but it idles like a 454 with a giant cam when warm which causes hesitation below 3500rpm, and it starts drinking gas like ryan dunn drinks alcohol before driving home.

Chris, yes i have. That was when i wasn't getting any power to the front o2 sensor, and an injector wasn't working.

i'm having the exact same problem 94 atx

the only codes i was getting was 335 and 539 no check engine light either????

Also at time it feels like the front end is falling off the car its that bad of a stumble .........


also it get really bad with the air on, more stumble and feels and sounds like the motor is bogging

 

[SeanMc]

i'm having the exact same problem 94 atx

the only codes i was getting was 335 and 539 no check engine light either????

Also at time it feels like the front end is falling off the car its that bad of a stumble .........


also it get really bad with the air on, more stumble and feels and sounds like the motor is bogging

Yup, mine is worse with the a/c on...but only after a fair amount of driving.

 

[RAYJAY]

Yup, mine is worse with the a/c on...but only after a fair amount of driving.

same here and it comes and goes use the car all last week for work and it was great

filled it up and got worse i thought it was bad gas at first filled up at a different station but 2nd fill same thing ?????

would a 93 computer be ok to try on a 94 to see if that is the problem ????? never did a 94 back to a 93 swap .......... and have a lot of 93 pcm's sitting here

 

[rubydist]

the 93 pcm will work (its wired the same) but the shift programming is reportedly better on the 94+

 

[SeanMc]

Ladies and Gents we have found the issue. Marcel, and another friend had alternator. Marcel suggest to check the voltage when warm. So I pulled out the voltmeter and tested when cold: 13.8 and then climbed to 14.2-5. I then drove around for 30 minutes and checked again: 12.3 and slowly falling. Soooooo, time to lifetime warranty this alternator! I think when my CCRM went out, the short landed at the voltage regulator.

 

[SeanMc]

Quick update:

...and after 3 bad O'Reilly ones, I ended up with a rebuilt Motorcraft. Works perfect, and after replacing the rear o2 sensor, the car drives awesome.