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Date: 6 Aug 2000 22:32:58 GMT
From: kenbellnopsamx.com (Ken Bell)
Subject: '88 9000T - no start when hot


I've begun having a puzzling problem with my '88 9000T. Over the last several months (I drive it infrequently, maybe only 20 times or so in that time) it has become more and more likely to not restart after the engine becomes normally hot (say, one hour of city driving). At first, it would restart if I let it sit for 15 minutes or so. Today (outside the NY state inspection station :-) it took 4 hours. This seems to be heat related, huh? While waiting there today, I opened and reclosed the gas cap, just to see if there was any pressure build up (no), replaced the rotor and distributor cap (long over due), made sure the ignition wires were seated properly, and reseated all the relays, even rapping the fuel pump and injector relays to make sure they weren't sticking. A couple of weeks ago, I replaced a long suspect ignition coil. The battery appears in good condition and provided over 11 V while cranking (well, at least the last time I tried, when the car finally started and I drove home; the car then drove very nicely, even up hills). The alternator provides about 13.3 V at idle, sometimes runs up to about 14 V when the car first gets on the road. I'd appreciate ideas on where and how to look next. I'm considering the fuel pump, Hall effect sensor, ignition module, and mass air flow sensor. Am I headed in a reasonable direction with these, or might there be something else, maybe even something cheaper, to check first? Can I test the ignition module, MAF and Hall sensors with the usual DIY equipment (i.e., a multimeter and lots of free time)? I suppose it could also be a bad starter, however the last time (before replacing the ignition coil), the car cut out several times while tooling around the city on a hot day looking for an open inspection station, so I'm guessing that unless there are two problems, it's not the starter. Thanks. -- Ken Bell :: kenbellnopsamx.com :: (212) 475-4976 (voice)

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