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1997 Pontiac Sunfire no spark

Tiny
LEFTY469
  • MEMBER
  • 1997 PONTIAC SUNFIRE
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 145,000 MILES
Stopped car and it would not restart. Motor turns over. Have compression in all cylinders. Have replaced crank senser. Have replaced coil packs and pcm. Still no spark. Where do I look next?
Thursday, November 26th, 2009 AT 8:24 AM

3 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Welcome to the forum. What is the litre size of engine? Did you check primary voltage to the ignition module? Did you visually check for spark at the plugs?
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Thursday, November 26th, 2009 AT 10:17 AM
Tiny
LEFTY469
  • MEMBER
  • 2 POSTS
2.2 engine. Did check or spark
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Thursday, November 26th, 2009 AT 11:06 AM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
You said you changed the pcm, was that a misprint? I'd check the circuits at the ignition control module, first. The coil pack plugs into the ignition module. Pink wire is voltage, goes hot with the key on. Black wire is ground. The purple wire with white tracer carries rpm signal to computer. With engine cranking, that wire has a pulse on it. Without rpm signal, it won't start.
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Thursday, November 26th, 2009 AT 12:01 PM

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