Dodge RAM 3500 Engine and Engine Cooling Problems

Source: NHTSA · Updated Sep 4, 2026 · 124 complaints analyzed

Owners have filed 124 complaints with NHTSA about engine and engine cooling problems on the Dodge RAM 3500 across 18 model years. The 2007 model year has the most (17). The words owners use most often: “cooling fuel diesel” (10% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Cooling fuel diesel: mentioned in 12 of 124 complaints (10%)
  • Catalytic converter: mentioned in 7 of 124 complaints (6%)

At what mileage do engine and engine cooling problems happen?

Based on 68 complaints that reported the odometer reading.

Under 10k miles17 · 25%
10k–25k miles12 · 18%
25k–50k miles8 · 12%
50k–75k miles4 · 6%
75k–100k miles10 · 15%
100k–150k miles9 · 13%
150k+ miles8 · 12%

How serious are the reports?

Of 124 complaints, 4 mention a crash, 10 a fire.

Dodge RAM 3500 engine and engine cooling complaints by model year

Peak: 2007, with 17 complaints
1995: 3199531996: 771997: 6199761998: 771999: 121999122000: 552001: 5200152002: 222003: 4200342004: 662005: 102005102006: 662007: 172007172008: 13132009: 1200912010: 662011: 4201142012: 1010

n = 124 complaints · Source: NHTSA

Model yearEngine and Engine Cooling complaintsShare of that yearMedian miles
2012 RAM 3500103%230,750
2011 RAM 350042%50,675
2010 RAM 350064%500
2009 RAM 350011%—
2008 RAM 3500138%21,000
2007 RAM 3500178%20,000
2006 RAM 350062%85,000
2005 RAM 3500105%78,500
2004 RAM 350063%5,375
2003 RAM 350041%5,056
2002 RAM 350025%29,000
2001 RAM 350054%87,420
2000 RAM 350059%35,500
1999 RAM 35001212%101,000
1998 RAM 350077%158,500
1997 RAM 350065%103,000
1996 RAM 350076%50,000
1995 RAM 350033%—

When owners reported it

Peak: 2015, with 12 complaints
1995: 119951997: 21998: 219981999: 32000: 220002001: 42002: 920022003: 102004: 820042005: 102006: 420062007: 92008: 820082009: 102010: 820102011: 62012: 420122013: 32014: 520142015: 12122016: 220162025: 12026: 12026

n = 124 complaints · Source: NHTSA

Related recalls (2)

Engine and engine cooling:engine:diesel; fuel system, dieselOct 8, 2014 · NHTSA campaign 14V635000 · 315,325 vehicles

Model years: 2010, 2011, 2012

Problem: Chrysler Group LLC (Chrysler) is recalling certain model year 2010-2014 Ram 2500, 3500, 4500, and 5500 trucks manufactured March 27, 2009, to September 5, 2013. In the affected vehicles, the electrical connectors of the diesel fuel heater may overheat.

Risk: If the connectors overheat, the fuel heater may leak fuel, increasing the risk of a fire.

Fix: Chrysler will notify owners, and dealers will replace the harness side connector with a silver plated beryllium copper terminal service kit, and inspect the fuel heater for leaks, replacing it as necessary, free of charge. Chrysler issued interim notification to owners on December 8, 2014. The recall began on April 27, 2015. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is P65.

Engine and engine cooling:engine:dieselDec 5, 2008 · NHTSA campaign 08V641000 · 108,429 vehicles

Model years: 2007, 2008

Problem: Chrysler is recalling 108,429 my 2007-2008 dodge ram 2500 and 3500 pickup trucks equipped with 6.7l diesel engines. A silencer pad can sag and contact the exhaust gas recirculation (egr) cooler.

Risk: This could result in an engine compartment fire.

Fix: Dealers will add a bracket to support the engine compartment silencer pad adjacent to the egr cooler. The recall is expected to begin during december 2008. Owners may contact chrysler at 1-800-853-1403.

What owners report

Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.

The contact owned a 2012 Dodge Ram 3500. The contact stated that while the vehicle was parked, a fire started under the hood. The fire was extinguished by the fire department. The hood was completely consumed by the fire. The fire department declared the vehicle a total loss. The contact stated…

Received Sep 4, 2026 · NHTSA complaint 11762214

The contact owns a 2012 Ram 3500. The contact stated that while that while the vehicle was in for service, the independent mechanic discovered fuel leaking from the fuel filter heater assembly. The contact was advised that the fuel filter heater assembly needed to be replaced. The vehicle was not…

Received Mar 11, 2025 · NHTSA complaint 11647551

2010 dodge ram 3500. Consumer writes in regards to replacement parts not available to repair recall notices 14v-635 and 13v-529. *ld

Received Mar 23, 2016 · NHTSA complaint 10839470

Tl* the contact owns a 2010 ram 3500. The contact received notification of nhtsa campaign number: 14v635000 (engine and engine cooling, fuel system, diesel); however, the part for the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the…

Received Jan 7, 2016 · NHTSA complaint 10818626

2010 dodge ram 3500. Consumer writes in regards to diesel fuel heater electrical connector recall notice issues. *smd the consumer was informed there was a waiting list. *jb updated 09/10/15*lj updated 12/11/2015*js

Received Jul 8, 2015 · NHTSA complaint 10732110

Frequently asked questions

Do all Dodge RAM 3500s have engine and engine cooling problems?

No. NHTSA has 124 owner complaints about engine and engine cooling for the Dodge RAM 3500. Complaint data shows that the problem is reported, not how many of all cars sold are affected.

Was there a recall on the Dodge RAM 3500 engine and engine cooling?

Yes: 2 safety recalls list engine and engine cooling. Check your VIN on NHTSA.gov to see whether the fix was done on your car.

What do owners say about engine and engine cooling problems on the Dodge RAM 3500?

The most frequent phrase is “cooling fuel diesel”, in 12 of 124 complaints, followed by “catalytic converter” (7).

Other Dodge RAM 3500 problems

See all Dodge RAM 3500 problems.