โOct-14-2018 08:55 PM
โOct-18-2018 03:58 PM
โOct-17-2018 03:37 PM
timmac wrote:Do you have the codes noted in the TSB?
Well I am leaning towards this below as my problem and it was not overheating cause the temp gauge went back to normal in 1 second, it was just a false reading, time for a new thermostat and crossover pipe...โฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆโฆ.
TSB
06-21-15 MIL ON - DTC P1285 / P1299 - 5.4L 3V / 6.8L 3V - FALSE OVERHEAT
Publication Date: October 13, 2006
FORD: 2005-2007 F-53 Motorhome Chassis, F-Super Duty
ISSUE:
Some 2005-2007 F-Super Duty and F-53 Motorhome chassis vehicles equipped with a 5.4L or 6.8L 3-valve engine may exhibit an engine temperature gauge indicating an overheating condition with the malfunction indicator lamp (MIL) on with diagnostic trouble codes (DTCs) P1285 and P1299.
ACTION:
Performing normal engine cooling system diagnostics in Workshop Manual, Section 303-03, if it is determined that the engine is not physically overheating (coolant expulsion), install a new thermostat and crossover pipe. They have been revised for improved cooling system flow characteristics.
PART NUMBER PART NAME
7L3Z-8575-A Thermostat - 5.4L
7C3Z-8575-A Thermostat - 6.8L
3L3Z-8C368-A Crossover Pipe - 5.4L
3L3Z-8C368-B Crossover Pipe - 6.8L
โOct-16-2018 06:52 PM
โOct-16-2018 04:40 PM
โOct-16-2018 02:02 PM
timmac wrote:way2roll wrote:
I hear you on the tranny hunting gears.
That said, I would wonder if your still not overweight in what you are towing. A lot of RV's are almost to capacity leaving the factory let alone loading them up with people, fuel etc, then adding a car to mix. nevermind a jeep and a boat. I think the hitch rating just to tow on that year F53 is 5k and that's if your capacity can support it. Not sure what kind of boat you have but guessing the jeep and boat combo is over 5k. Maybe you know this and have compensated with an upgraded hitch and frame reinforcement.
I have a open stacker trailer that carry's my Jeep and 800 lb boat on top, total weight on this is 6500 lbs with 4 electric brakes and the motorhome itself is under its GVWR loaded {20,500lb chassis} and the frame in back has been reinforced and hitch upgraded, it can now handle 7500 lbs towing and air bags added to motorhome, Ford rates the motor/trans at 32,000 lbs total working rate.
Ford chassis specs for GCVWR with towing is 26,000 lbs
{Fleetwood down graded GCVWR to 25,500 lbs towing cause of there cheap frame extension and 5000 lb hitch}
โOct-16-2018 01:55 PM
timmac wrote:way2roll wrote:
I hear you on the tranny hunting gears.
That said, I would wonder if your still not overweight in what you are towing. A lot of RV's are almost to capacity leaving the factory let alone loading them up with people, fuel etc, then adding a car to mix. nevermind a jeep and a boat. I think the hitch rating just to tow on that year F53 is 5k and that's if your capacity can support it. Not sure what kind of boat you have but guessing the jeep and boat combo is over 5k. Maybe you know this and have compensated with an upgraded hitch and frame reinforcement.
I have a open stacker trailer that carry's my Jeep and 800 lb boat on top, total weight on this is 6500 lbs with 4 electric brakes and the motorhome itself is under its GVWR loaded {20,500lb chassis} and the frame in back has been reinforced and hitch upgraded, it can now handle 7500 lbs towing and air bags added to motorhome, Ford rates the motor/trans at 32,000 lbs total working rate.
Ford chassis specs for GCVWR with towing is 26,000 lbs
{Fleetwood down graded GCVWR to 25,500 lbs towing cause of there cheap frame extension and 5000 lb hitch}
โOct-16-2018 01:03 PM
way2roll wrote:
I hear you on the tranny hunting gears.
That said, I would wonder if your still not overweight in what you are towing. A lot of RV's are almost to capacity leaving the factory let alone loading them up with people, fuel etc, then adding a car to mix. nevermind a jeep and a boat. I think the hitch rating just to tow on that year F53 is 5k and that's if your capacity can support it. Not sure what kind of boat you have but guessing the jeep and boat combo is over 5k. Maybe you know this and have compensated with an upgraded hitch and frame reinforcement.
โOct-16-2018 11:13 AM
timmac wrote:way2roll wrote:
The F53 is equipped with the tow haul feature to handle scenarios exactly as you described without having to manually shift into a lower gear. Did you try that?
Also, is it possible that towing a Jeep and a boat didn't exceed what your RV is engineered to handle?
My tow haul works good when going down hill but when going up a large hill it wont stay in the gear I want when I change speed so this time I just put it in 3rd gear so trans would not hunt, and to those that say I was killing my motor I was not at 4500 rpm the whole time sometimes it was 4000 rpm going up this hill and there was also head on wind and my whole setup weight is 26,500 lbs not over weight as to Ford motor/trans specs.
โOct-16-2018 09:02 AM
way2roll wrote:
The F53 is equipped with the tow haul feature to handle scenarios exactly as you described without having to manually shift into a lower gear. Did you try that?
Also, is it possible that towing a Jeep and a boat didn't exceed what your RV is engineered to handle?
โOct-16-2018 05:32 AM
โOct-16-2018 04:55 AM
charwan wrote:doxiemom11 wrote:
I didn't know you were ever supposed to use overdrive when climbing, and have always heard that keeping your rpm's down also will help keep the engine and transmission cooler. I think you will kill your engine/transmission if you keep pushing it that hard when you climb. Why do you think they always say - sit back in your seat, relax and enjoy the climb.
Well let's see if he has sense to just slow down to 4000 and pull the hill or start spending money as others have suggested. I still say he's killing his MH as you and I have suggested. Just because they tell you the V10 will do 4500 doesn't mean it will do it forever.
โOct-15-2018 08:29 PM
doxiemom11 wrote:
I didn't know you were ever supposed to use overdrive when climbing, and have always heard that keeping your rpm's down also will help keep the engine and transmission cooler. I think you will kill your engine/transmission if you keep pushing it that hard when you climb. Why do you think they always say - sit back in your seat, relax and enjoy the climb.
โOct-15-2018 05:53 PM
carringb wrote:
There's no reason 4500 RPM will cause overheating. It's designed to run that fast. I do it, and much faster, for extended pulls up long grades.
โOct-15-2018 02:42 PM
timmac wrote:
Well I did not change my thermostat when I flushed my system maybe I should have done that as well,.....
We must be willing to get rid of the life we've planned,
so as to have the life that is waiting for us.