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Engine & cooling

Tiffin Phaeton Engine problems by year

13 complaints filed with NHTSA about the Tiffin Phaeton's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Engine complaints by model year

YearEngine complaintsCrashesInjuriesRecalls
20201000
20191000
20181100
20151000
20141000
20122004
20112005
20102002
20081000
20051000

Engine recalls

Latest Phaeton engine complaints

2012 Tiffin PhaetonEngine & cooling

This vehicle like many thousands has a def system that uses diesel exhaust fluid in addition to diesel fuel. This pollution control scheme, installed by both freight liner and cummins diesel, when it fails, it orverides all engine speed controls and only allows the vehicle to drive at 5 mph. This is unsafe, dark, heavily traveled roads with large semi tractor trailers, bus's, passenger cars and trucks running at 70- to 90 mph coming up on a 5 mph vehicle presents a serious safety issue for human beings, children,...

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and all others and is outrageous that it is allowed and it is forced onto all diesel powered motor homes as well as millions of other vehicles. Do we have any real safety people who are being paid to make our vehicles and roads safe, that give a damn. This speed control limit is a terrible way to enforce a pollution controls system on the american people. Will anyone have the backbone to correct this unsafe, dumb, system, anyone. I was left stranded on a highway yesterday, nov. 1, 2022 Near vero beach, florida in my diesel pusher motor home. I am mad as hell, and all of you should fix this insane problem.

Filed Incident EngineNHTSA 11491959
2018 Tiffin PhaetonEngine & coolingCrash

The contact owns a 2018 Tiffin Phaeton RV. The contact stated that while driving approximately 60 MPH, the dashboard instrument cluster lights suddenly began to flash off and on and the Diesel Emission Fluid (DEF) sensor light remained illuminated before the vehicles decelerated independently to 5 MPH. The vehicle was driven to a nearby service center(unknown) and the Diesel Emission Fluid sensor was replaced, and the failure was remedied. The manufacturer was notified of the failure. The local dealer was not contacted. The failure mileage was 22,000.

Filed Incident Engine and engine coolingNHTSA 11431608
2019 Tiffin PhaetonEngine & cooling

Engine Fault Codes 3364, 3031 & 1761. DEF Head Senor Failed. Derated the engine. Travel speed reduced to 5 MPH. Replacement Part backorder from Tiffin Motorhomes. Limited information when availability.

Filed Incident EngineNHTSA 11425781
2020 Tiffin PhaetonEngine & cooling

The epa came out with requirements in 2013 that all diesel engines have a pollution mitigating def (diesel exhaust fluid) system. Apparently, the epa required the industry to measure the following three items with respect to blue def. - Level of def - temperature of def - quality of def I have been told that the epa granted an extension of the third requirement, quality of def, since no one could manufacture the equipment necessary to do so. This extension apparently lasted until 2017. These def sensors being...

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installed are failing at an alarming rate, many within only a few miles. When def sensors fail the engine can go into derate mode which is 5 mph. This problem is leaving many large diesel engine owned vehicles stranded, from motorhomes to large over the road trucks. Currently, the only company that makes the def sensors is shaw development. Shaw development will not take calls or emails requesting information regarding this problem. Again, the def sensor requirement was a regulation passed by epa in 2013, stating the def concentration (quality) be measured in the def tanks of vehicles. However, the def sensor manufacturers cannot seem to manufacture a part that is reliable and not put engine into a potentially dangerous derate mode. Shaw development is currently on the sixth generation of the def sensor which are still failing on brand new 2021 vehicles. That is six attempts to make a part that continues to leave people stranded. I have no argument with the need for this smog reducing mitigation equipment. What I do have a problem with, is the epa requirement to measure the quality of def when no one can produce a reliable product to do so, and the effect that it is having on the transportation industry. I would like to ask that you request the epa to suspend this requirement until someone can produce a reliable product to measure the quality of def.

Filed Incident EngineNHTSA 11415275
2015 Tiffin PhaetonEngine & coolingFire

Cummins inc. Issued a field action, atc1747 to prevent pressurized engine fuel leaks. We received a letter from cummins dated july 28 2016 strongly encouraging cummins complimentary installation of fuel supply line isolators on #1 and #6 fuel injectors. Cummins is now saying that we didn't act on the offer quickly enough and they've retracted their offer to install the fuel supply line isolators at no charge. Our rv engine is still under cummins factory warranty with only 5,000 miles, and we have already had a...

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serious pressurized fuel system leak at the fuel injectors, that was repaired under warranty. We want cummins to install the fuel supply line isolators to prevent a fire in our rv engine, while the engine is under warranty.

Filed Incident EngineNHTSA 10945574
2010 Tiffin PhaetonEngine & coolingFire

Tl* the contact owns a 2010 tiffin phaeton. While driving at 70 mph, the contact noticed exhaust fumes in the vehicle and the check engine warning light illuminated. Upon further inspection, the contact noticed that the exhaust flex pipe fractured and that some wiring and the battery compartment enclosure had melted. The vehicle was taken to a dealer, who diagnosed that the exhaust flex pipe needed to be replaced. The vehicle was repaired however, the failure recurred . The manufacturer was notified of the failure. The failure mileage was 14,737. The vin was unavailable.

Filed Incident Engine and engine coolingNHTSA 10712388
2014 Tiffin PhaetonEngine & coolingFuel system

Cummins fuel filter ff 63009 date code 14200, appeared to have failed, leaking fuel onto the exhaust pipe as well as stalling the motor home at the crest of a small mountain.Leaking fuel did not cause a fire but did smoke. If engine had been in regen mode there could have been a fire....Contact with cummins revealed that they have had some of these filters fail with no apparent visual defects but did show under pressure. *Tr

Filed Incident Engine and engine cooling · Fuel / propulsion systemNHTSA 10662206
2011 Tiffin PhaetonEngine & cooling

The motor home manufacturer is tiffin motor homes, red bay alabama, the coach is built on a freightliner chassis built by freightliner chassis. The problem is exhaust fumes entering the interior of the coach producing a strong diesel exhaust fumes odor and probably carbon monoxide. Our research into this problem indicates that the exhaust fumes are entering the coach during the regeneration cycle . We believe there are two issues involved. #1 There is an exhaust leak somewhere between the turbocharger and the...

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def catalyst system. (We believe this is a freightliner problem because they built the engine, exhaust system and chassis). #2 There are leaks in the floor, sidewalls, compartment openings or access panels allowing the fumes to enter the coach. (We believe this is a tiffin motor home problem because they built the coach). We will attempt to resolve both issues with a visit to tiffin and freightliner. We are concerned from a health and safety point of view. [[redacted]] information redacted pursuant to the freedom of information act (foia), 5 u.S.C. 552(B)(6). *Tr

Filed Incident EngineNHTSA 10545631
2012 Tiffin PhaetonEngine & cooling

Tl* the contact owns a 2012 tiffen phaeton. The contact stated that the cabin was filled with exhaust fumes. The vehicle was taken to the dealer where it was being repaired. The failure mileage was 2,000.

Filed Incident EngineNHTSA 10543275
2010 Tiffin PhaetonEngine & cooling

Tl* the contact owns a 2010 spartan motor home equipped with a 2010 tiffin phaeton chassis. The contact stated that the check engine warning light illuminated and exhaust fumes entered the cabin. The vehicle was taken to the dealer where it was determined that the bellows pipe had failed. The vehicle was repaired. The manufacturer was contacted about the failure. The failure mileage was 14,000.

Filed Incident EngineNHTSA 10525222
2011 Tiffin PhaetonEngine & coolingFire

While driving on i-68 west bound in the state of maryland, about mile maker 67 notice a wood burning smell and saw smoke in rear of motor home. Pulled to the side of road at exit 68. Went to rear of motor home and saw fire thru rear hatch on driver side around engine by exhaust. Called 911, fire department arrived but motor home was a totally lose. Also recall was done on 08-22-2011, mileage at recall was 6125 miles. May relate to nhtsa campaign number 11v416000 component engine, engine cooling and exhaust pipe. *Tr

Filed Incident Engine and engine cooling · EngineNHTSA 10512094
2005 Tiffin PhaetonEngine & cooling

2005 Allegro (tiffin) phaeton on freightliner xc chassis with catapillar c7 engine: traveling from sarasota, fl to san diego, ca starting august 18, 2009 the engine began overheating on an ever more frequent basis until august 27, 2009, when traversing the mountains west of san diego on interstate 8 we were forced to stop on the side of the highway every one half to one mile to cool down the engine to a workable level. These frequent stops created a hazard for everyone else traveling that stretch of highway and...

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created a risk of engine failure and/or fire in a generally remote area. During one such stop we did scrape the side of the vehicle on a guard rail under a railroad trestle. The damage has not yet been estimated but I expect it to be approximately $3,000. The problem was eventually traced by freightliner san diego to a too short crankcase blowby vent on the engine that allowed crankcase oil mist to be sprayed on the forward side of the radiator by the cooling fan. Subsequently, dust and dirt thrown up during driving was absorbed by the oil and essentially blocked the air flow over the radiator. After some miles (ours was at about 49000+ miles) the blockage becomes great enough to cause almost total failure. Given its location the side of the radiator affected is not visible to inspection without significant effort. The solution was to remove the radiator and the air charge cooler, clean them and reinstall them. In addition, freightliner provided a replacement for the crankcase blowby tube that is longer and sends the oil below the radiator (i.E., This is a known problem at freightliner). I do not have the original tube. The cost for the cleaning was $2,403.78 And the part was $256.58 (Done at separate facilities).*Tr

Filed Incident Engine and engine coolingNHTSA 10289786
2008 Tiffin PhaetonEngine & cooling

We took delivery on a tiffin phaeton 2008 motorhome (vin last digits 8cz81559)nov. 9, 2007. We first drove it on the road nov. 23, 2007 And within 30 miles had overheating, low coolant, engine shutdown problems. Freightliner said to keep driving as long as it would go. We had multiple incidents with the same problem and kept getting the same answers. On june 25, 2008, we coasted to the side of a busy four lane 50 miles south of kansas city and had to be towed to cummins since freightliner had 6 tech's off to...

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school. When diagnosing the problem, cummins said freightliner had a field safety campaign 388a-f issue and the problem described had occurred. The horton fan, fan hub, belts, wiring, cac, etc. Had all been torn off with the shear of the fan bolt and wobble and final breakage. It took 6 days to get parts and fix. We left july 1st and made it as far as denver when on july 4th, it occurred again. Denver freightliner said it was the same problem and all new parts had to be ordered and replaced. It took 7 days this time. We had no notice to the recall and had to lose time and money twice within two weeks. *Tr

Filed Incident Engine and engine coolingNHTSA 10235343

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data

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