Pyrometer and Pressure - Luxury Coach Lifestyles
Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
Reply
 
Thread Tools Display Modes
 
Old 05-30-2011, 02:31 PM   #1
jmacstack
Senior Member
 
Join Date: Apr 2009
Location: Missoula, Montana and Montpelier, VT
Posts: 100
Default Pyrometer and Pressure

We are in Rapid City, SD and along the way I noticed my pyrometer was working intermittently. It's acting like a loose wire. Any ideas on where I might look for that on the engine? The pressure side (dual gauge) is working fine. So far so good on everything else except that I have a leaking passenger side window that leaks only when we are not moving. It's been raining the whole way from Montana! Thanks, Jennifer
__________________

__________________
[SIGPIC][/SIGPIC]Jennifer Stackpole
1987 Newell, 40ft #143
DD 8V92 Silver
2010 Cannondale Tandem
No Name Tandem Mtn Bike
1973 Triumph GT6
2012 AWD 4-door Mini-Cooper
3 Ford Trucks
Just another fanatical motorhead
jmacstack is offline   Reply With Quote
Old 05-30-2011, 09:47 PM   #2
2dogs
Member
 
2dogs's Avatar
 
Join Date: Nov 2007
Posts: 73
Default

Jennifer, The sending unit is on the drivers side coming out of the exhaust right after the turbo. on our 87 it was working intermittent, sounds strange but if i tap the air horn it works again! Brian
__________________

__________________
87 Newell Tag 40'-8v92TA-HT740 #139
2dogs is offline   Reply With Quote
Old 05-30-2011, 10:59 PM   #3
encantotom
Senior Member
 
encantotom's Avatar
 
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
Default

to help visualize it. the pyrometer is just a sensor(k type thermocouple) that threads into a collar that is a little smaller than a dime that is welded either directly on the turbo housing or more commonly on the exhaust right after the turbo. if you have exhaust blankets covering it there might be a hole in it where the sensor or at least the wire sticks out. the 2 wires (one for plus and neg) will run directly from there up through wire tunnels up to the dash where it hooks directly to the gauge (or to a amplifier box right by the gauge) btw, honking the horn should have nothing to do with it unless there is a loose connection at the dash. the pyrometer sensor sticks through a hole in the exhaust (or turbo)

it is a very simple system with only 3-4 parts. 1. the sensor (k type thermocouple) 2. the wires 3. the gauge itself. 4. the amplifier box

so, if honking the horn makes it work, either it is the biggest coincidence in the world or there is a loose connection up front since the horn vibration shouldnt shake anything back at the engine.

possible the gauge itself or amp box is bad, but less likely than a loose connection.

i installed the pyrometer on mine myself. i also have on one my ford powerstroke pickup. very useful if you use it.

on my newell, the instrument panel had a lot of shared ground wires. i actually ran some additional ground wires from the front main dc panel and have used them for some additional grounding.

loose ground wires on the gauges i think are a common problem for our vintage coaches.

but i have to say that honking the horn is a great first try and certainly the easiest. its kinda like hammering on something with your fist. but sounds better. nothing like the sound of a newell air horn. i always do mine in underpasses.

happy troubleshooting

tom
__________________
2002 45'8" Coach
2008 Honda CRV toad

https://www.newellclassic.com/forum/album.php?albumid=8
encantotom is offline   Reply With Quote
Old 05-30-2011, 11:25 PM   #4
folivier
Senior Member
 
folivier's Avatar
 
Join Date: Sep 2008
Location: Thibodaux, LA
Posts: 1,221
Default

Tunnels, air horns, and jake brakes! Now you're talking!
__________________
Forest & Cindy Olivier
1998 Newell 45' 2 slide #486
2004 Chevy Silverado Z71
2013 RZR 570LE

"You don't have a soul. You are a soul, you have a body." C.S.Lewis


https://www.luxurycoachlifestyle.com/...php?albumid=14
folivier is offline   Reply With Quote
Old 05-31-2011, 12:11 AM   #5
encantotom
Senior Member
 
encantotom's Avatar
 
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
Default

i have to admit besides always tooting the air horn in a tunnel, i love to hear the jake brake....

tom
__________________
2002 45'8" Coach
2008 Honda CRV toad

https://www.newellclassic.com/forum/album.php?albumid=8
encantotom is offline   Reply With Quote
Old 05-31-2011, 01:41 AM   #6
chockwald
Senior Member
 
chockwald's Avatar
 
Join Date: Feb 2008
Location: Riverside, California
Posts: 1,543
Default

You, too?

I just love hitting the airhorn in, or out of a tunnel. I love listening to the jake brake....I remember on family trips in the late 50's early 60's to Idaho I would love hearing the jake brakes at night as we slept in a roadside motel along the way....it meant we were traveling, which I loved to do then, and now! Good memories!!!

Quote:
Originally Posted by encantotom View Post
i have to admit besides always tooting the air horn in a tunnel, i love to hear the jake brake....

tom
__________________
Clarke and Elaine Hockwald - FULLTIMING!
https://whatnewell.blogspot.com
1982 Newell 36’ DD 6V92 TA
2002 Thunderbird Retro
Cannondale Tandem
Cannondale Bad Boy
Cannondale F600
2 Terra Trike Tadpoles
Intense 5.5 mountain bike
ALBUM: https://newellshowcase.com/thumbnails.php?album=213
chockwald is offline   Reply With Quote
Old 05-31-2011, 05:04 AM   #7
2dogs
Member
 
2dogs's Avatar
 
Join Date: Nov 2007
Posts: 73
Default

Just saying that it worked.. might be a ground issue? when it dosnt work i tap the horn presto and i also love the jake, ours was hooked up one side only [low] so i ran another wire. now have low/high Brian
__________________
87 Newell Tag 40'-8v92TA-HT740 #139
2dogs is offline   Reply With Quote
Old 05-31-2011, 05:19 AM   #8
encantotom
Senior Member
 
encantotom's Avatar
 
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
Default

i believe it worked. but there is always a reason. the old chrysler van i had my kids drive in high school had a cold solder joint on the dash. sometimes to get the car to start you had to pound on the dash....same thing....

gotta love those airhorns and jakes.

tom
__________________
2002 45'8" Coach
2008 Honda CRV toad

https://www.newellclassic.com/forum/album.php?albumid=8
encantotom is offline   Reply With Quote
Old 05-31-2011, 12:52 PM   #9
folivier
Senior Member
 
folivier's Avatar
 
Join Date: Sep 2008
Location: Thibodaux, LA
Posts: 1,221
Default

"the old chrysler van i had my kids drive in high school"

Wow, that's tough love!
__________________

__________________
Forest & Cindy Olivier
1998 Newell 45' 2 slide #486
2004 Chevy Silverado Z71
2013 RZR 570LE

"You don't have a soul. You are a soul, you have a body." C.S.Lewis


https://www.luxurycoachlifestyle.com/...php?albumid=14
folivier 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

Forum Jump

» Recent Threads
No Threads to Display.
» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Newell Coach Corporation or any of its affiliates. This is an independent, unofficial site.


All times are GMT. The time now is 04:34 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
×