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Search: Posts Made By: DavidB
Forum: Modular V10 (6.8l) Yesterday, 04:08 PM
Replies: 2
Views: 61
Posted By DavidB
A number of things that it could be. Step 1: Get...

A number of things that it could be. Step 1: Get an oil pressure gauge and check the actual oil pressure. What type and weight oil are you using? How long/many miles since the last oil and filter...
Forum: Super Duty & Heavy Duty Yesterday, 02:24 PM
Replies: 9
Views: 179
Posted By DavidB
You do NOT need to use this tool. A digital...

You do NOT need to use this tool. A digital multimeter will work fine.

This video should give you some direction to help narrow down the problem.

Voltage Drop Test Using The Hook - YouTube
Forum: Super Duty & Heavy Duty Yesterday, 02:12 PM
Replies: 5
Views: 232
Posted By DavidB
I understand all of the parts that you replaced....

I understand all of the parts that you replaced. What type of testing did you do to justify replacing those parts and finding the actual problem?

Posting test results will help to diagnose the...
Forum: Modular V10 (6.8l) 03-30-2015, 04:04 PM
Replies: 3
Views: 220
Posted By DavidB
Fact: Correct fuel, correct compression, correct...

Fact: Correct fuel, correct compression, correct spark, correct timing, correct air intake = the engine runs.

Something is wrong or missing. You need someone with a good scanner that can look at...
Forum: Modular V10 (6.8l) 03-30-2015, 03:52 PM
Replies: 65
Views: 3,260
Posted By DavidB
Well, I guess someone will have to call me rude...

Well, I guess someone will have to call me rude too.

My V10 is so smooth at idle that , with the radio on low volume, I sometimes have to look at the tach to be sure that the engine is still...
Forum: Modular V10 (6.8l) 03-30-2015, 02:54 PM
Replies: 21
Views: 468
Posted By DavidB
If you are using the fuel gauge to calculate your...

If you are using the fuel gauge to calculate your gas mileage, that is half of your problem.
Forum: Super Duty & Heavy Duty 03-27-2015, 01:24 PM
Replies: 7
Views: 246
Posted By DavidB
Yes, but this problem is related to the PCM. ...

Yes, but this problem is related to the PCM.
Here is your troubleshooting list:
Possible causes
- Wrong thermostat
- Not at operating range
- Engine overheated
- Low engine coolant level
-...
Forum: Super Duty & Heavy Duty 03-27-2015, 12:16 PM
Replies: 7
Views: 246
Posted By DavidB
OK, I understand now why you said that, but it...

OK, I understand now why you said that, but it still indicates a lack of knowledge of how to troubleshoot the problem.

First, is a ridiculous statement.

Second, I would need a lot more...
Forum: Super Duty & Heavy Duty 03-27-2015, 07:09 AM
Replies: 7
Views: 246
Posted By DavidB
Your description of the problem is inaccurate....

Your description of the problem is inaccurate. The 15 vs 5 amp fuse should be corrected, then find someone who knows how to troubleshoot the problem. Your original post indicates that neither you nor...
Forum: Super Duty & Heavy Duty 03-26-2015, 08:10 AM
Replies: 6
Views: 233
Posted By DavidB
It does sound like you need to check the cam on...

It does sound like you need to check the cam on that side. Something doesn't add up though. You said that you had fuel, spark, and compression on all cylinders and that the plugs were "soaked". If...
Forum: Super Duty & Heavy Duty 03-24-2015, 03:37 PM
Replies: 22
Views: 1,155
Posted By DavidB
With the tests that he says he has done, I can't...

With the tests that he says he has done, I can't believe that he would not know that the fuel contained diesel. The numbers that he posts are not valid, including 02, fuel trim, etc. Either someone...
Forum: Super Duty & Heavy Duty 03-24-2015, 11:57 AM
Replies: 22
Views: 1,155
Posted By DavidB
I have been doing this stuff for a long time and...

I have been doing this stuff for a long time and your numbers do not make sense to me.

What type of scanner are you using? I did not see enough evidence to replace the ECU. I have NEVER seen a ST...
Forum: Super Duty & Heavy Duty 03-22-2015, 03:24 PM
Replies: 2
Views: 108
Posted By DavidB
That may be hard for you to troubleshoot without...

That may be hard for you to troubleshoot without a wiring diagram, so that may be what you need to do first. Are you getting a fuel pump "prime" when you turn the key on? Have you checked for a blown...
Forum: Super Duty & Heavy Duty 03-22-2015, 03:17 PM
Replies: 5
Views: 175
Posted By DavidB
Post the o2/AF sensor readings and the long term...

Post the o2/AF sensor readings and the long term and short term fuel trim readings (after the engine is warmed up). If he drives it very long at all with it running very rich, it will destroy the...
Forum: Super Duty & Heavy Duty 03-21-2015, 08:58 AM
Replies: 14
Views: 325
Posted By DavidB
No. Insufficient evidence. Maybe this...

No.

Insufficient evidence.

Maybe this video will help to troubleshoot the circuit: Note: This is NOT your circuit, but is an example for troubleshooting.
Switch Input Identification Variables...
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