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Forum: Ranger & B-Series Today, 08:31 AM
Replies: 2
Views: 89
Posted By pawpaw
Good idea to begin a new thread for the low rpm...

Good idea to begin a new thread for the low rpm idle & random stall when you go at throttle up. EDIT: Good idea on the video too.
Noticed in the video that the engine doesn't sound like its...
Forum: Ranger & B-Series Today, 02:05 AM
Replies: 58
Views: 1,040
Posted By pawpaw
If you'll check to see if the return line is...

If you'll check to see if the return line is blocked, we might know the answer to your last question.
Did this problem come about suddenly after some event, or slowly over time?
Forum: Ranger & B-Series Today, 12:17 AM
Replies: 58
Views: 1,040
Posted By pawpaw
If the fuel rail test port Schrader valve is...

If the fuel rail test port Schrader valve is leaking, that's a problem.
If the drain back valve in the fuel pressure regulator is leaking, that's a problem.
If you have a fuel injector with a runny...
Forum: Ranger & B-Series Yesterday, 11:30 PM
Replies: 58
Views: 1,040
Posted By pawpaw
I've never had a fuel rail Schrader valve...

I've never had a fuel rail Schrader valve problem, so I don't rightly know if the valve can be replaced, or if its designed for the whole fuel rail to be replaced.
Common sense suggests that like a...
Forum: Ranger & B-Series Yesterday, 10:00 PM
Replies: 58
Views: 1,040
Posted By pawpaw
Loosen the fuel tank gas cap. Disconnect the...

Loosen the fuel tank gas cap. Disconnect the return line at the fuel rail pressure regulator, wipe it off, don't inhale while blowing into the line with your mouth. If you can blow through the line...
Forum: Ranger & B-Series Yesterday, 09:48 PM
Replies: 58
Views: 1,040
Posted By pawpaw
Yes the fuel pressure regulator should hold...

Yes the fuel pressure regulator should hold pressure for minutes after the engine is turned off.

See my previous post for KOEO & KOER pressure ranges.

The fuel pump isn't designed to try to...
Forum: Ranger & B-Series Yesterday, 09:47 PM
Replies: 58
Views: 1,040
Posted By pawpaw
Disconnect the return line at the regulator, wipe...

Disconnect the return line at the regulator, wipe it off, don't inhale while blowing into it to see if it's clogged. You might loosen the gas cap in case it's warm & the tank has positive pressure.
Forum: Ranger & B-Series Yesterday, 09:24 PM
Replies: 58
Views: 1,040
Posted By pawpaw
Reading the initial fuel rail test port pressure...

Reading the initial fuel rail test port pressure numbers you posted, this dead head pressure reading sounds similar, so perform the return line blow through test, to make sure its open back to the...
Forum: Ranger & B-Series Yesterday, 09:20 PM
Replies: 58
Views: 1,040
Posted By pawpaw
I don't know, I've never tested a fuel pump...

I don't know, I've never tested a fuel pump without the fuel pressure regulator in the circuit!!!
Forum: Ranger & B-Series Yesterday, 08:47 PM
Replies: 58
Views: 1,040
Posted By pawpaw
Ok, so disconnect & blow through the fuel return...

Ok, so disconnect & blow through the fuel return line at the under hood pressure regulator, to make sure its open to the fuel tank.
If that checks ok, put the pressure regulator on your suspect...
Forum: Ranger & B-Series Yesterday, 05:49 AM
Replies: 58
Views: 1,040
Posted By pawpaw
Since the engine won't start with zero fuel...

Since the engine won't start with zero fuel pressure, make sure the gauge is properly attached & that the Schrader valve is free to open & the gauge hose is properly doing that.
If the gauge set up...
Forum: Ranger & B-Series 02-22-2018, 07:31 AM
Replies: 67
Views: 2,035
Posted By pawpaw
Since you seem to have solved the thread title of...

Since you seem to have solved the thread title of secondary ignition wiring break down problem, by using OEM Motorcraft parts, this thread should be closed out & a new one begun for the engine Stall...
Forum: Ranger & B-Series 02-21-2018, 08:44 PM
Replies: 67
Views: 2,035
Posted By pawpaw
When last was the MAF sensor cleaned.

When last was the MAF sensor cleaned.
Forum: Ranger & B-Series 02-21-2018, 03:15 PM
Replies: 67
Views: 2,035
Posted By pawpaw
Well lets think about this some more, did you...

Well lets think about this some more, did you test the TPS sweep using a Analog meter, being careful to watch its resistance value for drop outs Just as the throttle begins to move/open?
A digital...
Forum: Ranger & B-Series 02-21-2018, 09:28 AM
Replies: 67
Views: 2,035
Posted By pawpaw
Look atop the top front center of the rear...

Look atop the top front center of the rear differential pumpkin for the rear ABS speed sensor. It's attached with one 9mm fastener & it's body has a "O" ring seal.
When my P0500 code popped up, I...
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