[Per]

At the ecm on the side of motor on passenger side of motor those plugs or the sensor on the coolant tank, edit check coolant level goes with out saying !!! When checking the sensor or the plug

[Doug]

Is your coolant level where it needs to be?

[Bernie]

Thanks guys I’ll check check the plugs at the ecm, but Per you may have what is going on. The first time it happened I was south bound out of Birmingham hit some rough spots while climbing a hill, the other time we were exiting the Mobile tunnel on an incline while hitting rough spots in the road. I did my precheck but the rad fluid could be right at the top of the sight glass. I’ll check in the morning aND let you know. Thank you both for the reply, you’ve helped tremendously. ..

[Corey]

I had exactly same symptoms in June running between Montreal and Quebec. Turned out to be error code 043, coolant level sensor on expansion tank. Prevost swapped it, all good. Your cruise control probably dropped out too each time just before the check engine/stop engine lights illuminated.

[Archived]

Dan defined the starting point. Rather than use a hit and miss method of checking grounds and connectors pull up the code and start from there.

There are only three stop engine faults on your vintage coach: High coolant temp, low oil pressure or low coolant level. THEY WILL SHUT YOU DOWN so take them serious.

[Jim/Chris]

Thanks guys, I must of been absent in class the day they told us how to access the codes. Could I be enlightened on how to do that?

[Archived]

Also, I’m at a rv park getting ready to leave and viola, the coach will not start. The starter tries to engage, the engine turns but it seems like the starter disengages as I continue to try and crank.

I’ve called Coach Net to possibly give me a jump, is that the right move?

[Dick]

I figured out how to get the codes. They were just as you stated Jon, #44 and #43. Would either of these cause my last problem of not starting? Thanks all in advance

[needtocamp]

Before you call CoachNet for a jump:

1. How old are your chassis batteries? If more than 4 or 5 or 6 years, one or more could be a problem.

2. Have you checked all the battery terminals to ensure they are tight and there is no corrosion?

3. Was anything left “on” since the last time the bus engine ran that could have drained the batteries?

4. If you have multi-meter, have you checked the batteries to see what the voltages are?

We had brand new Interstate chassis batteries installed in our new to us coach by Jeff Rowe in May of 2014. In October of 2014 I had a similar experience to yours. At Jeff’s direction tried to charge the batteries, still no start. Pull them all out, took them Interstate distributor, Interstate determined one of the batteries had a bad cell and replaced it under warranty.

If you have a bad battery, jumping the bus won’t solve the problem. I don’t know if a coach with bad batteries will start with a jump, if it will start if it will run at highway speed, and don’t know if it will keep running with a bad battery or leave you stranded on the highway.

Regardless, good luck and keep us posted. We’re all sitting here worried for you and wondering how this will turn out!

[Archived]

Check to see if the “check” and “stop” engine lights come on when you turn on the key. If they do not come on the engine computer is not powering up. The engine will crank but not start. Check CB21 (6amp) and relay R23, both in the rear junction box. CB21 is the power for the wake up signla and R23 must close to get that voltage to the ECM of the engine. This loss of 12 volt power intermittently could cause the check and stop lights to flash in the dash.

[needtocamp]

Loose connections at the relay or circuit breaker could be amplified when on rough roads and stillhave a poor connection on normal roads.

[Archived]

I replaced r23 with r9 to no avail before reading the last post I’ll check all connections. The two lights on the dash sel and cel both respond when key is turned on the go out after doing the check.

[Archived]

In always wanting to please my wonderful wife, I listened to her in not towing a toad, well we’re here with two bicycles and no other wheels isn’t love grand…….

[Will]

I’m sure Kathy is a very nice person. The primary purpose of the toad is to carry the bikes.

I was introduced to Prevosts by a good friend 25 or so years ago. He had a GMC RV (Toronado front end) and a 33′ Bluebird prior to his new Liberty. He ALWAYS pulled a toad. I asked why. He said, “what is something happens to the bus?”

The only times I don’t pull a toad is when I’m pulling the race trailer or going no further than 20 miles from HOME.

[John]

I can assure you the toad will be with us whenever the bus is headed 50 miles plus from home. I’m wearing the big boy pants NOW. (as long as Kathy let’s me)