1999 Peterbilt 379 Engine cooling Problems
- Complaints
- 2about this part
- Share
- 40%of 5 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 1999 Peterbilt 379, 40% of the 5 complaints for this model year. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Vehicle fire ignited in engine compartment. While driving the driver noticed smoke coming from the engine compartment. The driver pulled the vehicle over and drifted about 1/2 mile with the engine off. The consumer exited the vehicle and saw flames under the engine area. The driver retrieved a fire extinguished and attempted to put out the fire but was unsuccessful. The cab of the semi sustained heavy fire, smoke and water damage.”
NHTSA complaint #10052201, filed 2003-12“The crankshaft broke when slowing for a scale house, leaving the truck disabled. The truck was towed to a shop. The cluch and transmission input shaft had to be replaced.”
NHTSA complaint #10074269, filed 2004-05Related service bulletins
- 10168703Nov 6, 2019Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
Engine cooling: other model years
Other parts of the 1999 Peterbilt 379
← All problems reported for the 1999 Peterbilt 379
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology