May 22, 2010 01:31PM
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Registered: 13 years ago
Posts: 1 |
May 22, 2010 05:21PM
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Registered: 15 years ago
Posts: 1,538 |
There are a couple of things you'll need to establish... Do you have spark at the plugs? Are they wet? If you have no spark, then there are a couple of potential areas to check. One is the main relay(opposite end from the fuel pump relay) and the other is the coil. If the plugs are not getting wet; ie no fuel; then there could be issues with the fuel pressure regulator or the wiring harness that feeds the electrical signal to the injectors. There is a connector under the intake manifold near the diagnostics plug that can become filled with water and corrode until nothing works; check that too. One more place to check is the engine to chassis ground strapping; it's found on the driver side by the engine mount. Let us know what you find and we'll hopefully get you back up and running in short order B) |
May 25, 2010 11:33AM
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Registered: 15 years ago
Posts: 636 |
The other mystery item that can cause a no spark situation, and I always mention because it took me months to find, is the crank position sensor. This is attached in front of the oil filter housing, and points right at a visibly toothed metal disc. Make sure that sensor isn't all crudded up, and is within a half inch or so of the disc. You might also visibly check the wiring, though that appears to be a lot less of a problem. For me it was all gummed up with dirt, rock, oil for glue, and a distance slightly more than spec.
If that sensor isn't getting a reading for whatever reason, the ECU won't give the command to fire a spark, even though all electrical components will test okay. However, I'd start with Archeo's advice first, as it is far more likely to be those things ----------------------------------------------------------------------------------- 1989 - E30 - M20 - Manual. Approximately 270,000 miles 2000 - E46 - M52TUB28 - Manual. Approximately 110,000 miles |