1999 Daewoo Lanos

Tiny
HAIRYTYLER
  • MEMBER
  • 1999 DAEWOO LANOS
  • 6 CYL
  • FWD
  • MANUAL
  • 46,000 MILES
My car started shaking a few seconds after it started I moved off but felt I needed to put my foot down to get going car did this twice it was like it was losing power pulled over and car stopped, started it again drove off car very shaky even when driving along I was worried it would stall but it didnt but was shaking like made
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Monday, January 19th, 2009 AT 5:58 AM

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Tiny
DAVE H
  • EXPERT
Have the vehicles PCM read for fault codes. Most good autoparts stores (autozone etc.) Will do this free. Repost with the fault codes for a better diagnosis

IGNITION SYSTEM OPERATION
This ignition system does not use a conventional distributor and coil. It uses a crankshaft position sensor input to the powertrain control module (PCM)/engine control module (ECM). The PCM/ECM then determines Electronic Spark Timing (EST) and triggers the electronic ignition system ignition coil.
This type of distributorless ignition system uses a "waste spark" method of spark distribution. Each cylinder is paired with the cylinder that is opposite it (1-4 or 2-3). The spark occurs simultaneously in the cylinder coming up on the compression stroke and in the cylinder coming up on the exhaust stroke. The cylinder on the exhaust stroke requires very little of the available energy to fire the spark plug. The remaining energy is available to the spark plug in the cylinder on the compression stroke.
These systems use the EST signal from the PCM/ECM to control the electronic spark timing. The PCM/ECM uses the following information:
Engine load (manifold pressure or vacuum).
Atmospheric (barometric) pressure.
Engine temperature.
Intake air temperature.
Crankshaft position.
Engine speed (rpm).
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Monday, January 19th, 2009 AT 8:23 PM

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