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The Competition Discussion of other vehicles similar to the Sprinter; Transit, Promaster, etc.
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Old 12-18-2017, 07:20 PM   #1
lindenengineering
 
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Default Engine overview Gasoline Promaster

Of course I am referring to the gasoline Pentastar engine.

Problems recorded to date.
Head problems:-
Valve seats falling out of #2 & #6 cylinder heads.
The factory is replacing heads under SOME date configs & circumstances.

Closed coupled Cat configs.
We are noting some heat degradation of heads caused Cat overheat since its close coupled to the heads & unitary manifold architecture.
Any metal failures up stream in the engine has an effect of damaging the Cat matrixes.
Beware!

Excessive oil consumption
Some instances some cylinder bore washing caused by misfires and ultimately Cat degradation.
Latest rings using a spring loaded super-slotted style IN STEEL instead of the three piece bore conformable EARLY STYLE seems to have promise.
There are better pistons available now with improved drain and graphite coated for better wear resistance.

Head Gaskets
Now multi layer Viton coated available in the aftermarket .

Oil cooler/Oil filter arr!
Big issue with the oil filter sleeve detaching itself on oil changes.
Either replace the whole thing with a new one or get a Dorman repair part--Its works.
Filter cooler assy is still fraught with oil leaks especially at the sensor fittings --Beware!

Rod bolt failure
Original bolts were wasted, new bolts were straight shanked
And
So you guys thought Sprinters are bad!

Dennis

Last edited by lindenengineering; 12-18-2017 at 07:28 PM.
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Old 12-18-2017, 08:44 PM   #2
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Default Re: Engine overview Gasoline Promaster

So a FIAT (fix it again, Toni) is really a FAD?
(fix at Dennis')

--dick
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Old 12-25-2017, 03:30 PM   #3
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Default Re: Engine overview Gasoline Promaster

Interesting. Could you tell us approximately at what mileages these issues are occurring?

I've been on the Promaster forum for most of its existence and I've not heard of any of them.
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Old 12-25-2017, 08:24 PM   #4
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Default Re: Engine overview Gasoline Promaster

Here's a tube video
I had a 2014 town and country with a 3.6 with 32,000 that started to leak from a crack in the seam of the housing it pumped out 2.5 quarts of oil before i pulled over and shut it down. I fixed it and sold it. I consider myself lucky.
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Old 12-25-2017, 10:18 PM   #5
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Default Re: Engine overview Gasoline Promaster

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Originally Posted by MsNomer View Post
Interesting. Could you tell us approximately at what mileages these issues are occurring?

I've been on the Promaster forum for most of its existence and I've not heard of any of them.
They are across the board.
The last one I had a go at was just over 130,000 miles and it had an engine wash out due to prolonged misfiring due to misplace valve seats.
The oil cooler leakage is quite common and happens in the warranty period --and out of it!

Engine blow ups are not common but they are there and remember many of these vans are used by company drivers who abuse the rig.
Dennis
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Old 12-27-2017, 05:47 PM   #6
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Default Re: Engine overview Gasoline Promaster

My USPS postman poked his head in my van the other day while I was working and we talked van for a bit. USPS is using ProMasters and while he likes driving it, he said they are in service a lot for failing transmissions and engine rocker arm problems that usually requires cylinder head replacement. A quick google search for "Pentastar tick" will produce a lot of hits.
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Old 12-27-2017, 06:57 PM   #7
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Default Re: Engine overview Gasoline Promaster

It appears my decision to get a Transit was the correct one.
Hyundai might be the next van. Or Tesla van if they come out in 5-10 years.
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Old 01-03-2018, 10:41 PM   #8
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Default Re: Engine overview Gasoline Promaster

Well like anything maintenance is the issue or key to successful operation.
In this case the Ram Promaster suffers with driver abuse in many if not most fleet instances !

Notably drivers who throw any old oil in it, when it seems Euro`style blend specs and frequent changes seems to be beneficial than 20,000 miles (in a casual attitude ) in many cases.

Driving with misfiring always will kills Cats just like any other gasoline vehicle with bore washing as consequence. So no surprises there.
Above all they like brake jobs--wear like crazy!
Dennis
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Old 01-06-2018, 12:50 AM   #9
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Default Re: Engine overview Gasoline Promaster

Quote:
Originally Posted by surlyoldbill View Post
It appears my decision to get a Transit was the correct one.
Hyundai might be the next van. Or Tesla van if they come out in 5-10 years.
Interestingly, one of the things people don't take into consideration with regard to electric vehicles is cold weather range limitations. I know someone who has a Nissan Leaf and does a one way 75 mile commute but is unable to make the inbound trip because of the limitation of the battery when it's cold. He works for an electric company and gets free top-ups when he arrives at work, but simply can't make it there with the bitterly cold weather we've been getting on the east coast lately. He ends up driving his hands gas-engined Honda Odyssey instead.
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Old 01-06-2018, 03:27 AM   #10
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Default Re: Engine overview Gasoline Promaster

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Originally Posted by photogravity View Post
Interestingly, one of the things people don't take into consideration with regard to electric vehicles is cold weather range limitations. I know someone who has a Nissan Leaf and does a one way 75 mile commute but is unable to make the inbound trip because of the limitation of the battery when it's cold. He works for an electric company and gets free top-ups when he arrives at work, but simply can't make it there with the bitterly cold weather we've been getting on the east coast lately. He ends up driving his hands gas-engined Honda Odyssey instead.
Good thing I don't live somewhere that gets cold. If I were to live in 4-season country, I'd want a plug in hybrid for sure.
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