[SEL] OFF TOPIC: Read at your own risk. Old Ford 5.8 liter 351 Windsor Engine Problems

[jbcast at charter.net]

Mark, check ignition timing, probably should be 10 degrees with the 
"spout" disconected, the spout is spark out, a wire, usualy near the 
distributor, some are an inline connector, some have a gray plastic 
shunt that you pull, brings it down to base timing. The 5 volts is on 
the egr sensor, not the solenoid, it's on top of the egr valve. Three 
wires, one should be 5 volts, one ground, the other is signal return, I 
believe .5 volts on this one, some of the early ones were 1 volt. If the 
voltage is high, you can grind a little off of the punger to lower it, 
if it's low I squeeze the very tip of the plunger in the vise to make it 
longer. The EGR valves build up carbon on the seat, lifting it and 
showing high voltage when it should be seeing closed voltage, it will 
set a code, usually won't affect running much. Map sensors are critical 
on these, you need a hertz meter to check it, I have one on my Fluke, 
it's been a long time since I checked one, seems like 159 to 160 here, 
were just a few feet above sea level, there are charts that will give 
the specs for the baro reading. Be sure the vacuum hose ot it is open, 
if it's colapsed or clogged it will stumble because the sensor isn't 
reading vacuum drop quick enough, if you can find a sensor it's easy 
enough to just try one. Fuel pressure, guessing 34 psi on this one, I 
can look it up tomorrow. Try unplugging the O2 sensor, see if ti runs 
better that way. If I think of anything else I will let you know.
J.B. Castagnos



Jul 16, 2013 at 8:12 PM, Mark Shulaw wrote:

> Hi All, This is about a 94 Ford 5.8  351 Windsor. So delete now if 
> your not interested. Fair Warning, LOL.
> I need to talk to a good ford mechanic if we have any on the list. I 
> need to run through some ideas. Its in the van I just got to replace 
> the Hawkins Machine I lost in the wreck nearly three weeks ago. .
> Its had all new plugs, rotor and cap, fuel filter and now I know its 
> throwing a code 33 as I bought a code reader today for the old ones. 
> OBD 1 . . Heres the rest.
>    I knew this when I got it but Its got a bad stumble at all rpms. 
> Idle, light acceleration and at speed. Seems to not stumble under hard 
> acceleration. Goes pretty good. It is throwing a 33 EGR code. After 
> several hours of cussing and misery in the sun and heat I checked out 
> the EGR as best I could and finally tore it all out. One cuss of a 
> job. Not an easy job considering where its buried.  All parts check 
> out. I have 5 V power to the solenoid switch on, Continuity of the 
> solenoid windings. No vacuum at idle.    The EGR valve itself works as 
> it should but I have an egr code and the stumbling. Maybe the two are 
> not related? In either case its throwing a 33.  I am starting to think 
> I might have a bad computer. So if anyone is very familiar with these 
> beasts please help. At least just running through some ideas. I am 
> going back out now to reassemble.
> If I could just get the stumble to go away I would not give a hoot 
> about the 33 .  Will try to check the timing chain tomorrow.
>       Maytag Mark        419.516.2996
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> Mark Shulaw
> 454 County Road 33
> Bluffton, OH. 45817
> USA
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> Frappi at wcoil.com / 419.358.5206  Home
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