ford ecu

[Todd....!!]

OK GMECM sounds to me like Brian, with the thunderbird, may merely need
to know how to reset the ecm in his car, how is the eec-iv reset?

Do you merely disconnect the battery for 5 or 10 minutes, then reconnect
it and let it learn from its true masta how it should behave? or, for
example, turn the ignition on and off three times which tells the ecm to
reset itself to default and let it learn how it should behave from its
true owner, not some limp ankled 'shady' 'mechanic'...??

Just a thought?

If noone here knows, and even if they do, I back grumpys recommendation
to try and find and verify what to do with the eec-iv list guru's as
well!!

ALSO, just a quick note, there are finite specific conditions which will
cause a car to ping:
#1 reason for most cars to ping would be timing,
#2 is most likely a lean condition, 
#3 is low octane/bad fuel,(You've mentioned you used ONLY 93 octane and
it still pinged, so that's probably not it)
#4 Carbon build up within combustion chamber

That about does it in my book as to what can cause a pinging condition!

Anyone have anything to add?

I'd say that if your car pings, and you don't have carbon buildup you
must realize that because the ecm controls timing & air/fuel ratio,
therefore, if your car pings then it's either the ecm runnin too much
timing(i.e. - too advanced) or the ecm is leaning out the air/fuel too
much.  Did your mechanic check the o2 sensor?  maybe it's not sending
the correct signal due to it being defective?

I thought that when the O2 sensor goes out, the engine runs in limp
mose(i.e. over rich condition, not sure how the eec-iv runs in limp
mode, SURELY it doesn't go into a lean mode when the O2 sensor goes
out???)

Just a laymans' perspective...

Over n out good buddies!!,

Todd....!!
atc347 at c-com.net


CSH-HQ wrote:
> 
> There is a list specifically for the ford ecms.  Has EEC-IV or some such in
> the title.  I'm sure someone there would know of any service bullentins or
> problems with the replacement MAFs.  Some sharp guys there.
>   It sounds like they used the wrong MAF, if your description of things is
> accurate.  Sometimes folks just don't notice things till after a major repair
> ie drive just inna certain fashion, that skirts/masks the actual problem,
> and then dive 10% and then notice the problem.
>   As I recall the ford ecms have a slow learning process, and hat might be
> the problem.
> Grumpy
> 
> >Hello,
> >
> >I have a 95 thunderbird, with the 4.6l V8 and auto tranny. Awhile ago, it
> >started pinging like mad.. I poked around, having no way to retreive the
> >codes from the ecu, I took it to a dealer (after, it seems like a shady
> >one) to get it looked at, the MAF sensor had died.
> >
> >They happily charged me $300 to replace it, which I doubt they actually
> >did. Before the MAF failure, the car had zero engine troubles and it NEVER
> >pinged. The car has slight pinging during acceleration and heavier pinging
> >when the transmission shifts, however, intermittently it slighly pings all
> >the time.
> >
> >I've tried all kinds of fuel, every brand thats here, all grades, even ran
> >it almost totally out of gas, filled it with some 93 octane fuel, put in a
> >octane booster, it still pings.
> >
> >When its warm outside, it seems to do it more, and easier. Also, after
> >having the vehicle serviced at the dealer I thought I noticed i quite
> >severe power drop, but since I rarely drive it harder than a old lady, I
> >wasnt really sure until I took it over to a skidpad to play with the
> >suspention and it wouldnt even burnout anymore.
> >
> >Anyone have any ideas of what the problem could be? I lack badly in the
> >area of electronically controled engine knowledge. Theres nothing that the
> >ECM could do to reduce power like that, is there?
> >
> >Any thoughts would be appreicated..
> >
> >- Brian
> >