Guest zmettler Posted December 28, 2004 Share Posted December 28, 2004 after 15-20 mins of driving my 78 280 dies. i change the plugs out because they foul then it runs fine again for awhile. any ideas Quote Link to comment Share on other sites More sharing options...
savageskaterkid Posted December 28, 2004 Share Posted December 28, 2004 ummm, wow, ur post is helpful-u gotta describe the problem a bit better, wht usually happens b4 the car shuts off, does it start idleing really low, and then die, or wht. on ur exhaust is there alot of black garbage-wich means that ur running too rich, mayb a head temperature sensor problem. u should also check the spark from the wires- hold it up against the exhaust manifold, and look for a blue spark, if its a yellow spark-its too weak and u need new wires or cap and rotor. If u dont get enough spark-then it mite b idleing too low and then just die out, im having an idle problem at the moment, and the spark plugs r the next thing to b replaced, other than that-i have a full new spark setup BTW, wht is ur idle around, i believe the stock idle for a Z is around 1000 RPM If ur idle is off, then that could help pinpoint y ur car dies You said ur plugs were fouled, wich means theres alot of unburned gas in there, could mean bad spark, or bad mixture-having a bad head temp sensor can cause ur engine to flood itself, meaning that theres too much gas and not enough air-wich could explain y ur plugs r fouled. i had the problem once b4 Quote Link to comment Share on other sites More sharing options...
BrandonsZ Posted January 28, 2005 Share Posted January 28, 2005 MY f150 did that and it turned out to be the igniter. When I got hot it shut the truck off. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted January 28, 2005 Share Posted January 28, 2005 MY f150 did that and it turned out to be the igniter. When I got hot it shut the truck off. I think BrandonsZ is right. On a ZX the ignition module is right on the side of the distributor. Usually it goes like this: drive around for a while, suddenly no spark and the car just dies. Let it sit for an hour or so, fires right back up and drives again until it gets hot, dies again. Have you tried just waiting and then firing it again without cleaning the plugs? Quote Link to comment Share on other sites More sharing options...
savageskaterkid Posted January 29, 2005 Share Posted January 29, 2005 the same problem happened to me, it ended up getting so bad that it wouldn't start at all. I took the thing apart, then reconected everything VERY TITE, and BAM, works everytime Quote Link to comment Share on other sites More sharing options...
srgunz Posted January 30, 2005 Share Posted January 30, 2005 I helped fixing that same problem on a 78 Z. It turned out to be the pick up coil (module) under the distributer cap. Quote Link to comment Share on other sites More sharing options...
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