Hi and thanks for reading, I am new to this site and thought I would see what everyone had to say here before I take this thing to the dealer to get raked over..

I have a 2003 motorhome with a cat 3126, Well I put this thing away last fall it ran fine, sits for 4 months now it has no power at all,will not go much faster than 20mph.. I tried changing the fuel filter did not help,,

Also check engine light is on and the engine protect light comes on right after startup..

also does not start right away either.. AS I said it ran fine when I put it in storage..

Thanks

 

sounds like it is going into limp mode
don`t know anything bout cats but here is a bump for ya and hopefully someone with some experience with these can help ya

 

it is in limp mode, better take it 2 a CAT dealer...i used to work for CAT

 

Thanks for the response, I understand the limp mode,, BUt what I do not understand is how you can park something runing fine come back 4 months later no run.. a little strange.

First time I have ever dealt with that with a diesel..

I know it needs to go in just was hoping somebody had an idea before I go lay down 115.00 an hour.

Thanks

 

To be honest this site is targeted toward the big 3 diesel pickup applications. I wish I could help you out but Ive been here from the start and I dont ever recall much, if any discussion of CAT problems.

Things to look at are the throttle position sensor, fuel filter (which I see youve already changed), and air filter.


I did a search for you and found this: http://www.woodalls.com/CFORUM/index...g/19923088.cfm

 

Thanks sorry to intrude... I do have one of those 07duramax but that runs fine.. wish my cat ran that good

 

Your not intruding at all - we welcome everyone. I am cetainly not trying to direct you to another site - just trying to find you an answer for your Cat engine problem..

 

Wonder if the harness got attacked by mice or they built a nest inside the engine.

 

Dont know what kind of climate he lives in - could be algae in the tank, or even fuel line issues.

 

Another thing you can try is clean all the harness connections that you can get to.

You also check all the fluids before you fired it back up??