coil frustration
#1
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hi everybody,
New 1997 XK8 owner. Have seen quite a few threads where people have had problems starting the beast, but i cant find any that relate to mine. so if anyone can help it would be appreciated. goes a bit like this.
Turns over well but sometimes it starts with one turn sometimes it needs a dozen.
Checked compression with no real concerns.
Fuel pressure fine.
Tried resetting "flood" mode. No change.
Changed crank sensor and spark plugs.
Checked voltage on common feed to coils - no supply- but when supply is present,car starts.
Does the coil supply come directly from ECU or via a relay?
Thanks for reading.
New 1997 XK8 owner. Have seen quite a few threads where people have had problems starting the beast, but i cant find any that relate to mine. so if anyone can help it would be appreciated. goes a bit like this.
Turns over well but sometimes it starts with one turn sometimes it needs a dozen.
Checked compression with no real concerns.
Fuel pressure fine.
Tried resetting "flood" mode. No change.
Changed crank sensor and spark plugs.
Checked voltage on common feed to coils - no supply- but when supply is present,car starts.
Does the coil supply come directly from ECU or via a relay?
Thanks for reading.
#2
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The electrical schematic shows two leads from the ECM plus a ground and a lead from the fuel injector relay located in the ECM enclosure. That relay is the center one toward the front of the car.
If you want the schematic send me a PM with you direct email address so I don't have to go through the attachment process on internal messages.
If you want the schematic send me a PM with you direct email address so I don't have to go through the attachment process on internal messages.
Last edited by test point; 09-25-2009 at 05:19 AM.
#3
#4
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Maybe not the key but the switch could indeed have a problem. Without pulling the schematic back out there has got to be a switched B+ from the ignition switch to the ECM that you could test for erratic voltage.
Have you removed the ECM, sprayed the connectors with a dielectric spray and reconnected? Couldn't hurt.
DISCONNECT THE BATTERY FIRST!
Have you removed the ECM, sprayed the connectors with a dielectric spray and reconnected? Couldn't hurt.
DISCONNECT THE BATTERY FIRST!
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