cavalier non start?
Hi just wondering if anyone can help.i have a 1995 cavalier 1.8 petrol that will not start.fuel supply ok but no spark at plugs, checking wiring to crank sensor there is 3 wires none of these 3 have a live feed from engine ecu when ignition is turned on/cranking over(but coil does have live feed) i suspect that this is causing non start.
if anyone knows of common faults please let me know
thanks

markscav
September 2008

markscav, September 2008

cas is common failure point.output signal should be 4 volt a/c at pin a2 on ecu no live feed.disconnect cas plug and mesure a/c volt at sensor,4volt means ok.other common failure is coil amp pack, find under coil..same symptoms.older cars i find i change more ign amp packs.

caine, September 2008

The crank sensor if memory serves me right does,nt have a live feed as it,s basically a hall effect speed sensor.
Common problem on these cars is the distributor which will cause the problem you have.
Richard
rbtrans@hotmail.com

Richard, September 2008