Date: Tue, 02 Jul 2002 18:53:01 -0400 From: KeithG <noonenopsamspring.com> Subject: Re: '93 900s won't run - fuel pump?
It sounds like you may have a ground problem. The big ones are the first to check. disassemble and clean the battery negative, the connection to the chassis (front cross member), connection to the engine at the transmission, the 2 bolts at the head, the alternator ground strap and any others which you find which may be a bit corroded. These are important, though. The ignition module ground is also important. It would probably be with the rest of the grounds at the head, or on the fender (I am not sure). Jumping the relay is accomplished at the fuse box or at the relay itself. The relay uses a small current to close a switch of much larger current. The large current (to run the fuel pump) is from tab #30 to tab #87 or #87b. This is detailed on the townsend site 'no start LH 2.4 checks' http://216.78.172.244/engine_folder/nostart24.htm The hall sensor would be best checked by seeing if there is a pulse train (low voltage) coming from the hall sensor to the ignition module. Regards, KeithG Mark wrote: > I seem to have avery similar problem with my 900 turbo. Difficult to > start - then would cut-out randomly when either windows were lowered or left > indicator used - would fire up OK as soon as I stopped using > windows/indicator. Then it just refused to start at all. I laid it up for > a few months and then thinking that I should at least turn the engine over, > I removed the fuel pump fuse so as not to fill the cylinders wih fuel - and > it started - for about 4 seconds. Replacing the fuse and it didn't start - > removing it again and it did. > > What exactly is meant by 'jumping' the pump relay and how do I do it. > > Also Keith - from your other post - how do I check the hall sensor - what > equipment do I need to check it? > > Cheers > > Mark > "KeithG" <noonenopsamspring.com> wrote in message > news:3D21AE62.8060008nopsamspring.com... > >>True enough. It may have spark, yet the signal may not be getting to the >>ECU for it to turn on the fuel pump. Have you tried to jump the fuel >>(pin 30 to 87b or 87, I forget which) pump relay? If this allows it to >>start, then try swapping the relays ECU to Fuel Pump (or use a known >>good one) and report back. >> >>Regards, >> >>KeithG >> >>Eric Durkee wrote: >> >>>Hmmm...I thought since the car will fire when I shoot some starting >> > fluid > >>>in, that the ignition is okay. IF that hall sensor is not working >> > properly > >>>would you get any spark at all? I can't determine for certain from the >>>manual, but I assume since the Hall sensor replaces the point type >> > ignition, > >>>that if it wasn't working then you would get no spark at all. >>> >>> >> >> > > > >
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