45 MPH

[jdoran1973]

The comment about it happening when getting stuck in traffic is interesting. Not sure if you have a trans cooler but something may be getting it too hot. Take it to. A good truck shop and have them do a sac . Cheaper then blowing something major

[tonybalis]

The engine is a big Cat. I have not tried fuel filters or air filters, but will tomorrow. I have a sneaky suspicion it has to do with my batteries and them not charging. By the time I stopped the house batteries were dead. Could I be just running on batteries and not charging them through the Alternator.

[palehorse89]

Originally Posted by tonybalis

The engine is a big Cat. I have not tried fuel filters or air filters, but will tomorrow. I have a sneaky suspicion it has to do with my batteries and them not charging. By the time I stopped the house batteries were dead. Could I be just running on batteries and not charging them through the Alternator.

The House batteries will not affect how the engine runs Tony, are the Chassis batteries up to full charge? When did you change the fuel filter's last? Sounds like there might be a problem with the "House Battery" charging side of things though?? Check the voltage on your "Chassis Batteries" and see what they are.

[wblynch]

Check your gauges fuse. If house batteries get too dead and engine alternator gets overloaded trying to charge them it could blow a fuse or fusible link.

No charging from the alternator puts you running on a dying battery.

Transmission might be electrically controlled and refusing to shift into higher gears or lockup.

[nwdetectorist]

Vacuum Advance Issue

All the posts, at least at first scan, seem to point to filters.
May I suggest something altogether different.

A break in the engines vacuum advance lines, or the sending unit for vacuum advance unit on transmission failing for whatever reason can affect vehicle speed and mimic filter issues. I would definitely have some vacuum advance/engine vacuum tests run to look for the problem.

just saying
no, I am not a mechanic by trade, just a survivor

Good Luck

nwdetectorist

[dons2346]

Originally Posted by nwdtectorist

Vacuum Advance Issue

All the posts, at least at first scan, seem to point to filters.
May I suggest something altogether different.

A break in the engines vacuum advance lines, or the sending unit for vacuum advance unit on transmission failing for whatever reason can affect vehicle speed and mimic filter issues. I would definitely have some vacuum advance/engine vacuum tests run to look for the problem.

just saying
no, I am not a mechanic by trade, just a survivor

Good Luck



nwdetectorist

It is a diesel. No vacuum lines involved

[dons2346]

Originally Posted by tonybalis

My Country Coach Da Vinci today was maxing out on the speed at 45 MPH, any idea what going on?

First it doesn't make any difference as to what model you have, knowing it is a CC helps.

Do you have any red lights on the dash?

What temps are you seeing on your Silverleaf and if you don't have that, what do the dash gauges say?

Is the transmission up shifting, can it get into 6th gear?

My first guess is fuel filters. Have you recently taken on fuel?

Second guess is air filter. What does your air filter indicator look like? Is it into the red zone?

What kind of road were you driving on? Level, up hill, down hill, etc?

[87Rockwood]

Are you in cold country or warm country? Could be the fuel is jelling up on you.

[nwdetectorist]

Originally Posted by dons2346

It is a diesel. No vacuum lines involved

doH!

I guess this is why I am a shade-tree mechanic.
Because I want to be able to repair the little things on my MH;
I had better stick to gasoline powered.

Thanks,

nwdetectorist