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On a 1985 Chevy G20 van what else could be wrong with not getting spark Has new battery new plugs and wires new distributor cap and rotor The only thing left to change is the pickup coil?
Wiki User
∙ 12y ago
If you have electronic ignitin (no Points) It probably is the module, which you can replace quite easily. Two screws hold it down to the distributor base just below the rotor. Make sure you have current to the system also.
AnswerDid you check the distributor itself? A bad distributor means no spark. AnswerMake sure your battery isn't touching the frame of the car.You might need to check the wire that hooks up to the distributor. see if it is sending a current. If it is sending a current you nedd to make sure it is pushed all the way up into the distributor cap before you waste money on a coil. If it is pushed all the way in change the coil. If you change the coil and it still doesn't work, check the ignition module, it looks like a little chip under the rotor. Oh yeah. Make sure your battery isn't touching the frame of the car.++answer++
check you fuses on mine the ecu fuse blew causeing no spark at the coil replaced it and started first time again
Check your pcm module which is located under the drivers seat. I also own an 85 G20 van that had a 305 in it. if it came unplugged or has poor connection, the engine will not fire at all. If your van is stock, the engine has what is referred to as a computer controlled fixed timing, I personally hate this system because it controls the timing, the shifting of the transmission,the carburetor and your instrument cluster. I recently replaced the engine in mine with a 350 out of a 75 Impala and a tranny out of an 84 Pontiac firebird just to get rid of the electronic control system. This is beside the fact that the 305 it had ended up with a cracked block and I was looking for a reason to install a 350. I really hate 305 chev engines for their lack of power and well known problem of oil burning because of crappy valve guides. However I had to install aftermarket gauges except the speedometer. I stayed with the simple stock HEI ignition on the 350 i put in it because it will plug in with the main power wire of the van's stock distributor without relying on the PCM module. However this is a time consuming and costly modification because the vans stock tranny is electronically controlled also which means it will have to be replaced with a standard vacuum or governor controlled tranny. So if you want to get rid of that annoying PCM system, do your homework before you get into the project, but all I have to say Is I am quite impressed with this complete mod, the power,performance and reduced maintanance.
Wiki User
∙ 12y ago
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