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90 spirit won't run
"Daniel J. Stern" > wrote in message n.umich.edu... > On Tue, 7 Dec 2004, Wes Faul wrote: > > > > I think you have an electrical problem. Somehow, that injector isn't > > > being given the right signals. > > > I've checked the TPS, replaced the AIS, checked the Speed/Distance > > sensor. What other electrical sensors/relays, etc... do I need to check? > > The ASD relay shuts off the ignition, doesn't it? So it shouldn't be > > that. > > The ASD relay controls the ignition, yes, but also the fuel pump and also > the injection. It is the "master shutdown switch". > > > When depressurizing the fuel system, the chiltons > > Ooohboy. Chilton books will get you nowhere in a big hurry. You need a > factory book. They're not hard or expensive to get. > > > says to ground one terminal of the fuel injector, and touch the other > > terminal to the positive battery terminal. > > Good way to fry a fuel injector. That's what I figured. > > Has the throttle body itself or the fuel injector been swapped? Although > physically interchangeable, different-year versions of this same system > run at different pressures. Starting in '91 or '92, the system pressure > was increased to 39psi, and the later injectors aren't compatible with the > early lower-pressure system. I didn't replace either of them. I've had the car for about a month, and it ran fine until this. I figure it has to be something electrical, though. It was running fine when I parked it. Then, when I went to leave, it wouldn't start. > > Try this: Remove the battery negative cable from the battery and > leave it disconnected for two minutes, then reconnect it. Get in the car > and crank it, then check the codes and report what you find. I'm beginning > to suspect you'll see an 11. After I replaced the TPS, I unhooked the battery to reset the codes. Since then, I haven't had any codes except 12 and 55. Wes |
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