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Subject |
Author |
Date Posted |
Forum
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RE: Exhaust manifold question
Upgrade the manifold bolts with ARP bolts. Much better quality than OEM.
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udidwht
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09/20/23 05:27pm |
Tech Issues
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RE: Exhaust manifold question
Sounds as if 1 or more spark plug wires may have burned. Check all your wires carefully. It helps to wrap them with high temp sheaths (8) from the end of the wire.
Also check each of your exhaust donuts where the exhaust manifold meets the pipes. The donuts can burn up and you'll get excessive noise combined with power loss.
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udidwht
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09/16/23 10:26pm |
Tech Issues
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Annual HB trip report
Renton Wa - Huntington Beach, Ca. (and back) 1995 Fleetwood Southwind Strom 28ft 454 TBI w/4L80E trans
Total miles - 3,011 (US) Odometer upon leaving was 75,105 and upon return 78,116
Route south to HB - 405 - 167 - 5 - 199 - 101 - 580 - 680 - 101 - 405
Route north from HB - 405 - 605 - 5 - 101 - 680 - 580 - 101 - 199 - 5 - 167 - 405
Total oil consumed - 3/4qt (10w-30 Mobil 1 Extended Perf) w/Mobil 1 Ext. Perf. filter
Gas mileage - low of 7.5mpg (generator use)
average 8.5mpg (no generator use)
high 9.8
Fuel cost was just a hair under $1600 for the trip. Fueled up at Costco stations. We were gone for 3.5 weeks.
This was the first trip since I replaced the AC condenser w/integral oil cooler, AC refresh, cleaned exterior radiator tube fins out, new front air bags, (2) outer sway bar bushings/brackets, rebuilt TBI, new Delco IAC valve and (2) transmission lines.
RV ran great. Given I thoroughly cleaned the exterior of the radiator tube fins out I saw a drop (prior to work I did) of 10-12F average temps. On the flats in 90+F temps temp was at 205F (195F T stat). So if you have an older 'P series' that has an AC condenser in front of the radiator either:
1. Pull the condenser out and clean the radiator exterior out. (more work involved)
2. Purchase a radiator genie and clean it from behind the cooling shroud.
Cleaning it from the front cannot be done with the condenser.oil cooler in the way. I had attempted a clean out from behind last year prior to the work I did using a hose thru the coach into radiator area from behind (no nozzle) and even that did not get it clean. For pics of what it looked like when I pulled the condenser/cooler look here:
https://www.dropbox.com/scl/fi/vn24lwmd51fi3tva1j2rr/Radiator-before.jpg?rlkey=cnklp38brwbae4x8xwooa19ky&dl=0
https://www.dropbox.com/scl/fi/s0tornirysblg8j8op6i9/Radiator-after.jpg?rlkey=adiuok2l7vtfk5wf7ia0a95e2&dl=0
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udidwht
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08/18/23 07:37pm |
Roads and Routes
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RE: Onan 5500 Generator in Holiday Rambler 1998 Endeavor
You need to find someone with a G-Man set and have them diagnose it within minutes.
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udidwht
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08/14/23 01:02am |
Class A Motorhomes
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RE: Fuel pump
GM or Ford chassis?
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udidwht
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08/13/23 12:30am |
Class A Motorhomes
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RE: Sway bar issues
Have you measured the distance between the rubber bump stop and the crossmember. min of 1.5 inches?
I see blue springs. Are they variable rate replacements? If they are, was the rig weighed prior to ordering? if not variable rate, you need to install the air bags which rig should have had when new.
Actually, the measurement is made between the upper control arm and what the metal rubber bump stop sits on (iron to iron) ignoring the rubber bumper. The measurement also must be made perpendicular to the upper control arm.
That final measurement is then used to determine the degree setting for alignment.
For the the P-30 series front air bags...
With respect to ride height there is a lot of confusion it's measurement. The service manual states no mention of actual load only the rating of the axle. This will be in the motorhome (mine is on closet door GVWR 4880lb front axle).
When measuring the front you measure the distance between the upper control arm and the base of where the control arm bumper sits (iron to iron) ignore the rubber bumper. It must also be measured with the max psi from manual (mine is 4880lb front axle-50psi max OEM bags). Some have said to measure from the top of the bumper to the upper control arm. This is incorrect. It must also be perpendicular to the upper control arm when measuring.
Once measured that measurement is used it to compare in the service alignment graph to decide which degree setting is used when aligning the front end. Be sure the alignment shop uses the 'Motorhome' one and not the P-30 one. There is a difference.
Do not go over or below the recommended min/max psi for the front axle rating. Always go with the bag maker air pressure recommendations vs the service manual given the OEM bag pressure specs min/max differed compared to the newer air lift bags.
Air Lift 1000 bag pressures for motorhome are 40psi min - 90psi max.
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udidwht
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08/12/23 11:34pm |
Class A Motorhomes
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RE: P-30 series air bag info
Weird thread….
It is if you don't own a P series chassis.
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udidwht
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08/12/23 11:28pm |
Class A Motorhomes
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RE: P-30 series air bag info
Do you know what the specs on your chassis calls for?
http://www.offroadtoybox.com/RV/P-Chassis-AlignmentProcess.pdf
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udidwht
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08/10/23 09:58am |
Class A Motorhomes
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RE: P-30 series air bag info
Measured mine (iron to iron) and they are 4.25in. This is with full water tank, full fuel (60gal), me, wife and (2) kids 12 and 15. Bags at 50psi
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udidwht
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08/09/23 05:44pm |
Class A Motorhomes
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RE: P-30 series air bag info
As for the pressures specific to front GVWR of RV....
4,300 LB front suspensions = 10 psi to 50 psi
5,000 LB front suspensions = 40 psi to 50 psi
5,300 LB front suspensions = 50 psi to 80 psi
5,500 LB front suspensions = 60 psi to 100 psi
Alignment procedure:
http://www.offroadtoybox.com/RV/P-Chassis-AlignmentProcess.pdf
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udidwht
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08/09/23 01:56pm |
Class A Motorhomes
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RE: P-30 series air bag info
p-30 IN COIL AIR BAGS ARE not MEANT to increase front ride height. They are meant to INCREASE the front axle weight rating. There is a set pressure you install and I believe it is either 80 or 90 lbs of pressure. It has been 30 years since I have had to work on and look at P-30 front chassis air bags. Doug
Yes and no.
If doing an alignment the height must be checked prior to an alignment anytime. That is in the service manual. Once the height is confirmed the amount is then used to set the degree for alignment adjustment using the chart. After the alignment is set you do not however use the air bag to increase the height of the front.
M
As for psi amounts it differs between the GVWR of the RV front axle rating.
y point was, a LOT of P-30 owners think the air bags are ride comfort like rear air bags and they are NOT. Doug
Yes and no.
Do the bags provide comfort compared to no bags?
Yes. But they weren't intended solely for comfort.
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udidwht
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08/09/23 01:49pm |
Class A Motorhomes
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RE: P-30 series air bag info
p-30 IN COIL AIR BAGS ARE not MEANT to increase front ride height. They are meant to INCREASE the front axle weight rating. There is a set pressure you install and I believe it is either 80 or 90 lbs of pressure. It has been 30 years since I have had to work on and look at P-30 front chassis air bags. Doug
Yes and no.
If doing an alignment the height must be checked prior to an alignment anytime. That is in the service manual. Once the height is confirmed the amount is then used to set the degree for alignment adjustment using the chart. After the alignment is set you do not however use the air bag to increase the height of the front.
As for psi amounts it differs between the GVWR of the RV front axle rating.
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udidwht
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08/08/23 05:32pm |
Class A Motorhomes
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P-30 series air bag info
With respect to ride height there is a lot of confusion it's measurement. The service manual states no mention of actual load only the rating of the axle. This will be in the motorhome (mine is on closet door 4880lb front axle).
When measuring the front you measure the distance between the upper control arm and the base of where the control arm bumper sits (iron to iron) ignore the rubber bumper. It must also be measured with the max psi from manual (mine is 50psi). Many have said to measure from the top of the bumper to the upper control arm. This is incorrect. It must also be perpendicular to the upper control arm when measuring.
Once measured that measurement is attained use it to compare in the service alignment graph to decide which degree setting is used when aligning the front.
Do not go over the recommended max psi for the front axle rating.
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udidwht
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08/06/23 09:20pm |
Class A Motorhomes
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Need line/s made?
Wanted to pass this on in the event someone needs a line made such as trans, brake, hydraulic etc...give 'Morse hydraulics' a call. They are also mobile and can come to you if need be. Great folks.
I had (2) lines made for my 4L80E trans here in Kent, Washington. They also have locations on other states. The number in Kent is (253)844-5377
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udidwht
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07/10/23 04:25pm |
Class A Motorhomes
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RE: Breakdown Information
1994 Southwind Storm (454 TBI w/4L80E)
75,1XX
Not technically a breakdown due to me catching it before we left on the 11th July. Crawled under for a check of the exhaust donuts (looked great) but I found a trans line (output) on the rubber section (tiny pin holes) leaking. Currently have both lines off and will have a place make new ones.
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udidwht
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07/09/23 03:37am |
Class A Motorhomes
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RE: Front grill filter
Update:
This is working quite well and holding up great.
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udidwht
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07/09/23 03:07am |
Class A Motorhomes
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RE: TBI Min idle speed spec
Is there a question in this post or is it just information?
Just info. I've seen and been asked of it often enough that I figured it would be good to post it up.
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udidwht
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04/18/23 04:52pm |
Class A Motorhomes
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TBI Min idle speed spec
Looking at the 1994 service manual for 454 TBI under fuel systems (Section 4-4A) the 'Min idle speed' setting is... (Factory set screw)
For the 7,4L auto trans in Drive is 625 (+-25rpm) Closed loop
Controlled Idle Speed is as follows:
454 7.4L in Drive 675 (+- 25rpm) IAC count 5-30 (Closed loop) at operating temp 196-222F (add 2 counts for every 1000ft above sea level
The 'controlled idle speed' is obtained by the control module positioning the IAC valve. A high/low coolant temp or AC clutch engagement may signal the control module to change the IAC counts.
IAC counts will be above 60 if idle is too low and zero counts if idle is too high. Things to check if so...
1. Vacuum leak/s
2. System too rich
3. TB obstruction
4. PCV issue
5. AC issue
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udidwht
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04/17/23 10:50pm |
Class A Motorhomes
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RE: Difficulty timing a 1995 Chevy 454ci
So at the beginning of the thread you said you got nothing.. nothing as far as the motor goes or nothing on your timing light.. then further down the thread you said it kicks but won't run.. that sounds like a bad distributor module.. could be lots of other things but that's cheap and easy to change
I know this thread is a bit of a saga at this point :). Over the course of this process I have replaced the entire ignition system with brand new ACDelco parts. It will now start at the bump of a key. However I need to do further testing with the engine warmed up, which currently I can't do because the water pump bearings are completely toast. That's why I'm pulling the pump. Since the pump is out of the way it isn't that much more effort to pull the timing cover and check for a jumped chain or a sloppy one, which could very well be why the engine is still not running right.
To be clear, all the work I've done is making it run better, but it's not right.
If you do the water pump don't forget to replace the clutch fan as well. With north of 200K on the engine the timing chain very well may be the issue with the miss in the ignition system.
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udidwht
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04/16/23 05:11pm |
Class A Motorhomes
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RE: Difficulty timing a 1995 Chevy 454ci
Updates
After much sweating and swearing the water pump is off. Next step will be to pull the timing cover and check for a jumped tooth and/or sloppy chain.
There is a cross member underneath that can be removed for easier access to front of engine. This is the cross member to remove...
https://www.irv2.com/forums/f65/what-did-you-do-to-your-old-rv-today-133779-444.html#post5713099
Once out it gives this access...
https://www.irv2.com/forums/f65/what-did-you-do-to-your-old-rv-today-133779-443.html#post5712066
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udidwht
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04/16/23 08:50am |
Class A Motorhomes
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