LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Porsche >> 1987 >> 944 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> DME Control System >> Adjustments >> Speed Sensor Clearance
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Speed Sensor Clearance

NOTE: Adjusting speed sensor automatically adjusts reference mark sensor. They cannot be adjusted separately.
  1. The speed sensor bracket is mounted on the crankcase flange with 2 bolts. To adjust clearance, loosen bolts and turn sensor holder. Clearance should be .030-034" (.75-.85 mm).
  2. To adjust clearance with engine installed in vehicle, remove speed sensor. Using a depth gauge, measure distance from sensor holder's upper surface to tooth head on starter ring gear.
  3. Measure length of speed sensor. Subtract speed sensor length from holder-to-flywheel tooth distance. Difference should be .030-.034" (.75-.85 mm).
  4. If not to specification, loosen screws and turn holder until holder-to-flywheel tooth distance is equal to the length of the sensor plus the specified clearance. Tighten screws, and install speed sensor in holder.
scientia non olet · About LEMON Manuals