Reply
 
Thread Tools Display Modes
 
Old 07-24-2020, 11:50 AM   #1
Senior Member
 
mikracer's Avatar
 
Join Date: Sep 2013
Location: San Luis Obispo, CA
Posts: 2,323
Engine Load % - Scangauge

My van pings when going up grades even when unloaded (stock interior). I took it to my mechanic who plugged in his Ford software and he said everything checks out. No stored codes, no check engine lights, nothing. He pulled some plugs and they looked good. Even switched around some COP's to make sure it wasn't funky with them.

I did some searching on google and found a thread where someone having a similar issue as mine checked his engine load % on scangauge and noticed it was high, even when cruising on flats. So I checked mine and mine is high as well. When slightly accelerating on a flat, it will go up to 60. Anything going up a small hill and its in the 70-90 range.

The guy ended up changing his cats and it fixed his problem. I think one or maybe both were plugged. My van has 156k miles on it and I'm wondering if my cats could be plugged as well. The only thing thats different is that my van still feels like it has full power whereas the other guy said he felt a significant loss of power.

Is there anything else I should be looking at that causes such a load on the motor and pinging? Anyone else have this issue?
__________________

__________________
2005 E350 Chateau - V10 - Agile Offroad 4x4
2012 CTS-V Wagon - For the baby...
mikracer is offline   Reply With Quote
Old 07-24-2020, 12:10 PM   #2
Senior Member
 
carringb's Avatar
 
Join Date: Jan 2009
Location: Corvallis, OR
Posts: 4,683
Your MAF is likely contaminated. CRC MAF spray cleaner should do the trick. Oil, dust, or other contaminants act as an insulator. The MAF measures air velocity indirectly by measuring how much heat is is lost from the filament. So a little bit of contamination makes it think less air is flowing than really is. The 02 sensors have a limited range they can correct for, and the knock sensor only detects detonation, no pre-ignition.

Also the MAF can build up resistance from corrosion it it's ever been exposed to engine coolant. When my radiator exploded coming over the Siskyous it sucked a bunch in, and cleaning did not help, so I had to replace it that time.
__________________

__________________
2000 E450 dually V10 wagon
carringb is offline   Reply With Quote
Old 07-24-2020, 12:12 PM   #3
Member
 
Mikerson's Avatar
 
Join Date: Jun 2018
Location: Idaho
Posts: 73
Iím not noticing this on my van, but we had a plugged CAT on a Subaru we had. I noticed a loss of power then too, but no codes. It helped me diagnose to unplug the upstream O2 sensor and run it up and down the street a few times with an open hole to free up the exhaust. I noticed way more power without the excess back pressure. Your van will likely throw a code and for sure be noisy, but itís a cheap test if you want to try it.

Iím not a mechanic... just what worked for me. Good luck and let us know what you find.
__________________
2001 E-250 SMB 5.4L MG Coil Kit, Modified EB57
Mikerson is offline   Reply With Quote
Old 07-24-2020, 12:17 PM   #4
Senior Member
 
86Scotty's Avatar
 
Join Date: Jul 2011
Location: TN
Posts: 8,556
Jin, I hope it isn't your cats. I think you have like 4. That could get expensive.
__________________
Currently vanless. Weird.
86Scotty is offline   Reply With Quote
Old 07-24-2020, 01:02 PM   #5
Senior Member
 
mikracer's Avatar
 
Join Date: Sep 2013
Location: San Luis Obispo, CA
Posts: 2,323
Quote:
Originally Posted by carringb View Post
Your MAF is likely contaminated. CRC MAF spray cleaner should do the trick. Oil, dust, or other contaminants act as an insulator. The MAF measures air velocity indirectly by measuring how much heat is is lost from the filament. So a little bit of contamination makes it think less air is flowing than really is. The 02 sensors have a limited range they can correct for, and the knock sensor only detects detonation, no pre-ignition.

Also the MAF can build up resistance from corrosion it it's ever been exposed to engine coolant. When my radiator exploded coming over the Siskyous it sucked a bunch in, and cleaning did not help, so I had to replace it that time.
I will definitely give this a try. I didn't mention that the pinging started after I put in a K&N filter on the van (filter only), so this could likely be the issue.
__________________
2005 E350 Chateau - V10 - Agile Offroad 4x4
2012 CTS-V Wagon - For the baby...
mikracer is offline   Reply With Quote
Old 07-24-2020, 01:03 PM   #6
Senior Member
 
mikracer's Avatar
 
Join Date: Sep 2013
Location: San Luis Obispo, CA
Posts: 2,323
Quote:
Originally Posted by 86Scotty View Post
Jin, I hope it isn't your cats. I think you have like 4. That could get expensive.
Yeah, I got 4!! I'm hoping carringb's post about cleaning the MAF will do the trick.
__________________
2005 E350 Chateau - V10 - Agile Offroad 4x4
2012 CTS-V Wagon - For the baby...
mikracer is offline   Reply With Quote
Old 07-24-2020, 02:45 PM   #7
Senior Member
 
mikracer's Avatar
 
Join Date: Sep 2013
Location: San Luis Obispo, CA
Posts: 2,323
I just cleaned the MAF as I had some CRC MAF cleaner already. The MAF did look like it had some gunk in it, so I was hopeful that a cleaning would cure my issue. Unfortunately, the load numbers haven't changed much after the cleaning.

I'm at 30 at idle and as soon as I give it some gas to get going it jumps up to 60. Is there any other way to test the MAF?

With the clogged cat theory, I guess I can test the temp at the inlet and outlet of each one to see if one is creating more resistance/heat.

Anything else I should be checking?
__________________
2005 E350 Chateau - V10 - Agile Offroad 4x4
2012 CTS-V Wagon - For the baby...
mikracer is offline   Reply With Quote
Old 07-24-2020, 04:00 PM   #8
Senior Member
 
carringb's Avatar
 
Join Date: Jan 2009
Location: Corvallis, OR
Posts: 4,683
Ignore the Load %. I don't know what the ScanGauge is measuring, but it's not useful.

But knowing you put in the K&N, I guarantee it's oiling your MAF. I suggest carrying the cleaner with you. You'll probably have to do it a couple more times before it stops misting oil. After that, it should be fine for a while until to you clean the K&N.
__________________
2000 E450 dually V10 wagon
carringb is offline   Reply With Quote
Old 07-24-2020, 04:56 PM   #9
Senior Member
 
mikracer's Avatar
 
Join Date: Sep 2013
Location: San Luis Obispo, CA
Posts: 2,323
Ok. The filter has been in for about a year.
__________________
2005 E350 Chateau - V10 - Agile Offroad 4x4
2012 CTS-V Wagon - For the baby...
mikracer is offline   Reply With Quote
Old 07-24-2020, 05:08 PM   #10
Senior Member
 
Youngster's Avatar
 
Join Date: Jun 2016
Location: North of SanDiego
Posts: 164
My van will ping like yours and is a little down on power if I forget and use 87 gas.
When I fill up with 89 gas it runs perfect. YMMV
__________________

__________________
2003 E-350, 5.4 V8, 2x4, LSD 4.10, WeldTec 6" lift, SMB, Penthouse
2016 Beta 500 RS
2003 Honda XR250R (retirement trail moto)
Youngster is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Sportsmobile Registry

KLUDR

vanderpooch

Clyde

ormtnbiker
Add your Sportsmobile
Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Sportsmobile SIP or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 06:10 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×