Diesel Data: Automotive Repair

Poor Accel in D, S, and R; Stall Speed Low; Engine Doesn't Rev to High RPM; Trans Doesn't Upshift Under Hard Accel (A/T)




Poor acceleration in D, S, and R; stall speed low; engine does not rev to high rpm; transmission does not upshift under hard acceleration

Engine output low

VTEC rocker arms defective

Restricted intake

Restricted exhaust

Torque converter clutch piston defective

Low fuel pressure

Notes

Check the stall speed A/T Stall Speed Test.

Notes

Check the engine control system.

Notes

Check fuel pressure Testing and Inspection.

Notes

Check for exhaust restriction.

Notes

Check for intake restriction.

Notes

J35Z6 engine: Check the VTEC rocker arms VTEC Rocker Arm Test.

Notes

J37A4 engine: Check the VTEC rocker arms VTEC Rocker Arm Test.

Notes

Replace the torque converter.