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Old 12-10-2012, 06:51 PM   #1
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How Many Have Their CAT Engs UPDATED?

My 2002 Winnebago has a 3126 CAT engine, I have the coach in for service and one complaint I had on list was that the dash heater and AC doesn't blow real well, and the heat doesn't really get too warm.

The tech believe's the cause is the tstats - and while checking on another complaint of mine - (hard start problem below 50degrees) the tech calls Caterpillar and they told him this engine has had 5 updates since it was built and it's never been updated one time per them (they could tell somehow).

So I called caterpillar and asked them about this whole 5 updates to my 3126 CAT engine since the build of the engine. The guy was really informative. He told me that there are engine updates that come out after the engine is originally built. Much like many computer programs have after they are released.

He goes on to ask me a few questions, and one was about fuel usage. When I told him I got 3.7mpg on a 1200 mile trip, he told me updating will increase my MPG and he said, keeping the engine updated will also give me a longer life on the engine.

Has anyone hear came across this? Have any of you checked your engines or had them updated?

By the way - the cost to update the engine is $122.00 and takes a whole day. They also told me that an update may very well fix some other issues, such as the hard start.

Any info would be appreciated.
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Old 12-10-2012, 07:37 PM   #2
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I would recommend following CAT's advice. The $122 sounds very reasonable.

Most of these engines get about 8mpg, so the update should save you big $$ in fuel mileage.
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Old 12-10-2012, 08:01 PM   #3
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I was doing some research today on the 2004 EPA, CAT 350 HP C7 for RVs. Great help form the CAT technician and I found out it has had something like 23 ECM upgrades!
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Old 12-10-2012, 08:14 PM   #4
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I'm also interested in this matter, keep us posted on this please.
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Old 12-10-2012, 08:24 PM   #5
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I'm surprised that there is any cost for the updates!
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Old 12-10-2012, 08:36 PM   #6
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Quote:
Originally Posted by Pusherman View Post
I would recommend following CAT's advice. The $122 sounds very reasonable.

Most of these engines get about 8mpg, so the update should save you big $$ in fuel mileage.
Lets hope this mpg update works. Lets see, from 3.7 to 8ish mpg. You will save $122 on first fillup and have money left over for martinis and lobster
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Old 12-10-2012, 08:39 PM   #7
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If the update takes all day,$122 is next to free! Ask what their hourly rates are!
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Old 12-10-2012, 08:46 PM   #8
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I will keep you all updated, my appt with with them is next Tuesday. They need the coach all day to complete the upgrades. Their labor is $129 and hour, but the guy told me just to update engine would be the $122. I told him "computer programs update for free and most often we program owners have no choice". That didn't get me a free update. The interesting thing we noticed on our trip was that the heater blower on dash didn't seem to work well, as did the ac part of it. Engine Updating helps cure that problem he said. Now, my DH is a retired mechanic, not diesel, and he said that is very possible updating will correct a lot of my whinny issues.... GRRRR I told him I am the driver, he's the rest of the of the stuff! My first lesson was finding out what Engine I had and then going from there, little does smart a$$ hubby realize - women have ways of eating even... that started this evening since he hates peas, we had peas for dinner.
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Old 12-10-2012, 08:57 PM   #9
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UPDATE: I called CAT back and was told by updating your CAT engine and keeping it updated, the updates put all the parameters back into place, the TWO major things I will notice they said is the improved MPG and the Hard Start.

So if any of you CAT engine owners have not updated your engines since build time, contact your local cat dealer or freight liner dealer or ???
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