There are lots of methods to creating more power in 4.0L Jeep engines. Some are easy bolt-on upgrades, while others require extensive modifications and engine ...

The controversy between carburetors and EFI has always been about complexity and price. Carburetors are simple—EFI is not. Carburetors are cheap—or at least cheaper than EFI. Those points have not ...

The Jeep 4.0L engine found in TJs, XJs, ZJs, and WJs is a trusty powerplant, and the '91-and-newer high-output versions make respectable power for a long time if well cared for. We recently ran across ...

Modern electronic diesel engines use ultra-low sulfur diesel (ULSD) fuel and have sophisticated fuel management systems that include integrated throttle control. Use of these engines results in ...

GM has issued a Special Coverage notification for certain 2021 Chevy Colorado pickup units describing a coverage extension related to a throttle body issue in trucks motivated by the Duramax ...

This technology, which is being added to the 694cc and 747 cc Command Pro EFI models, electronically controls air intake to optimize an engine’s power and load response.

Throttle body cleaning is a necessary part of vehicle maintenance since the throttle body plays a significant role in the smooth running of the engine. The purpose of the throttle body is to control ...