by Cayden Conor
Kevork Djansezian / Getty Images News / Getty Images
Several cars have jamming engines. An interference engine means that tolerances are so tight that if the timing is out of place even a little, the valves will hit the pistons. This could cause damage from a blow to the piston or could completely destroy the inside of the engine. When working with timing belts and chains, you need to know if the vehicle is equipped with an interference engine, and you should turn the engine by hand at least twice to make sure the timing marks are aligned after replacing the belt or chain.
While many of Toyota’s models are free-standing, several feature interference engines. Whether a Toyota has an interference engine or not depends on the engine that Toyota puts in the vehicle. The Tercel from 1980 to 1988 and the Corolla use the 1.5-liter engine with engine codes 3A and 3A-C. In 1987 and 1988, some of the 1.5-liter Tercels had an engine designation code of 3E or 3E-E, which is also an interference engine. This engine is found in the Tercel through 1994. The 1998 to 2000 Land Cruisers, Sequoia and Tundra use the same interference engine: the 4.7-liter V8 with engine code 2UZ-FE. In 1988, the Supra was equipped with the 2JZ-GE engine, a 3.0-liter V6, which is also an interference engine.
All Honda cars from 1984 to 1996 have interference engines. Engine codes include ES2, ES3, A18A1, A20A1, and A20A3 on the Accord and Prelude from 1984 to 1989. The engine could be a 1.8 or 2.0 liter engine. From 1990 to 1997, the Accord and Prelude used a 2.2-liter engine with an engine code of F22A1, F22B1, or F22B2. From 1995 to 2000, the Accord 2.3, Odyssey 2.2, and Odyssey 2.3-liter engines with engine codes F22B6, F23A1, F23A4, F23A5, and F23A7 are interference engines. From 1995 to 1997, Honda also used a 2.7-liter V6 engine in the Accord, with an engine code of C27A4. Over the years, at least through 2000, according to AutoData timing belts for domestic and imported cars, vans, and light trucks, all Honda vehicles featured interference engines.
Dodge has used a combination of engines over the years. The 2.0-liter Neon and 2.0-liter Avenger engines from 1995 to 1999 are interference engines. If the eighth character of the VIN is a “Y”, then the timing belt uses an automatic tensioner. The tensioner should be checked when you check the timing belt, but most technicians prefer to replace it. Because it is an interference motor, if the tensioner were to fail, it would damage the motor. The 1995-2000 Avenger with the 2.5-liter V6 is also an interference engine. This engine, unlike its four-cylinder brother, has an engine code, namely 6G73. The 2.4-liter engine used in the Stratus and Caravan from 1995 to 2000 (engine code EDZ) is also an interference engine. Another common engine found in Dodge vehicles is the 3.0-liter V6 found in Caravans, Mini Ram Vans, and Ram 50s, with engine code 6G72. Dodge used this jamming engine from 1987 to 2000 in many of its trucks and trucks.