[pass1over]

A9L, Moates Q-horse, BE, EA on a 331 with Mass-Flo TB and MAF

Had a decent tune on the car, definitely needed fine tweaking, but it was good enough for me to jump in, fire her up and go on errands or whatnot without worrying about the way it's gonna run.

Ended up with some driveline problems, so I parked it for about a month. Fixed the driveline problem, added a new gear, etc. The battery went dead during that time.

Didn't touch anything with the tune or anything on the motor at all, all I messed with was the rearend and the trans. Fired it up and it runs like crap. Idles at 11:1-12:1 AFR, stumbles, surges and gives fits under any kind of load.

Don't know where to start, checked all connections (they seem fine), checked to see if I floated a rocker (they're all fine). Loaded a couple different tunes, where the only things that changed were the MAF function, but no effect on idle AFR or drive-ability.

So where to go from here? Any ideas would be greatly appreciated.

[pass1over]

would the battery going dead cause my Q-horse to reset or anything like that?

[vristang]

don't think so... QH has it's own battery...

Did you check the connection at the ecu/QH?
Just thinking that it sat for a while... maybe corroded?

Maybe a ground?

[cougarnut281]

If it sat for a while and now runs like Crap chances are it has nothing to do with the tune. look for a mechanical or wiring issue.

[85GT]

Maybe the tune wasn't so decen,t and the KAMs helped correct it. With the battery dead, those got lost and needs to readapt. Are you sure it's running the same tune from the same position it was loaded?

[pass1over]

tune was not perfect by any means, but it ran good enough to use it without worry, afr's looked good, and had no problems at all.

Going to run a self test to check all sensors, then check to make sure its reading the correct tune.

NOTHING on the motor was messed with AT ALL, it was all rear-end work.

[pass1over]

noticed that on BE, with my laptop NOT plugged into the Qhorse, on the Hardware tab, Config, Mode is set to 0 and there are no tunes present on the right.

Does it default to that when its not plugged into the Qhorse? Guess i'm gonna go find out here in a min.

edit - it does default to this when Qhorse not plugged into laptop

[snowboarda42]

noticed that on BE, with my laptop NOT plugged into the Qhorse, on the Hardware tab, Config, Mode is set to 0 and there are no tunes present on the right.

Does it default to that when its not plugged into the Qhorse? Guess i'm gonna go find out here in a min.

edit - it does default to this when Qhorse not plugged into laptop

Yes because BE has no idea what you're going to tune when there's nothing hooked up so it defaults to Tune 0. Your QH will stay at whatever tune was last selected however.

Check your salt and pepper connectors at the back of the manifold, give them a good wiggle/cleaning since they're pretty sensitive to moisture, corrosion, etc. They're the big black and white 10-pin connectors. Also what's your TPS voltage now at idle?

What's the voltage read when the car is on? Did you do any welding while you were messing with the back end?

[pass1over]

last tune was NOT still selected with the laptop unplugged. The date was still there in Tuner mode, but not on the Settings page, t hat section was all blank.

There are no more salt and pepper shakers anymore. They were replaced with weather-pak connectors when I did the swap.

Don't know what TPS voltage is at idle offhand and laptop is in the garage.

No welding was done on the car.

It was the tune btw, changed a couple things and its driveable now. Just gonna start over with a new tune.

[pass1over]

changing injector slopes does nothing for it, its always pig rich. Where to start looking for a hardware issue that's causing this?

TP voltage at idle is 1.000, fuel pressure is at 39, vac hose off and plugged. Like I said, it sat for awhile, battery went dead, charged it up and now it runs stupid rich.

Willing to give any other info thats needed.

[decipha]

check first at the maf

[markedforlife]

With the QH plugged in under hardware in BE check the moates config box too see if your tune is still selected, example... mode2 tune1...

[pass1over]

It is, .mode 2 and tune 1 is selected. That's the only payload that's loaded.

Maf appears fine, sensors are.there, nothing looks damaged. Koeo codes comes up empty, but ill run em again just to be sure.

[85GT]

What about KOER tests?

[pass1over]

Have not run a koer test yet, will try to today if the weather clears

[pass1over]

cant find out how to do a KOER test when I have no CEL?

I use a light hooked up and count the flashes for the KOEO codes. Tried having my hookup the same way for KOER, waited for awhile, and no flashes. Car was warmed up.

But anyways, started with a fresh tune, input just my basic data and cars running like it should now. Injector slopes change stuff, LAMBSE's are commanding the correct amount now. Seems to be 100% better.

I would still like to figure out how to run KOER test with just a test light. Anyone, Bueller?

[85GT]

Same as KOEO. Just start the engine. :)

[pass1over]

Tried that, got nothing. Waited for awhile, got no blinkes at all. Only koeo code I get is.15

[85GT]

Jeesh, I've done it so many times it's just automatic. Let me see if I can picture it in my head.
I think the first thing happens as the engine starts is you see a blink count that equals half the numbers of cylinders. So you should see 4 flashes. Then the engine will get 'exorcised' speeding up slowing down, runs about a minute maybe. Then settles down, get the quick codes, then flashes the regular codes. After the last flash, a quick blip of the throttle puts you into the 1st balance test.

[pass1over]

Yea, I read all that and printed out instructions from fordfuelinjection.com.

warmed the car up past 180, hooked up my test light, started the car and the light never blinked. Never saw the 4 blinks for a v8. Waited around 2-3min and light never blinked at all.

[CA67EFI]

I have the exact same symptoms. The Engine Off codes are no problem, but i cannot get the Engine On tests to run. I dont get any blinks at all. I don't have a harness from my transmission to the EEC, so i am guessing my problem has something to do with the computer being unhappy about where it thinks the shifter is.

[pass1over]

might be, as I do not have the transmission harness, nor the neutral switch installed on my car.

Anyone know if this will cause it to fail or stop the test?

[85GT]

Hmmm... that's sounding familiar. But I would expect you'd get a code 67 in the KOEO test.
Do you have the clutch switch wire in? If so, try holding the pedal down.

[pass1over]

I have no clutch switch at all.I think I didnt hook those wires up to anything. Clutch in or out wouldnt matter to the ecu. Still push it in when starting, habit.