chrisxuereb12378

Hi, trying to get a 951 started. Disabled the aftermarket alarm, and bypassed the dme relay for trouble shooting purposes. We also replaced both crank position sensors. We get one strong spark on cranking and that’s it... ideas?

Dan Shea

does the tach bounce when cranking?

chrisxuereb12378

I’d have to check. Will get back. 🙏

GPA951s

Try un plugging the crank trigger sensors and plugging them right back in... That happened to me once.... must of been crud build up on the contacts.. They are VERY sensitive..

shortyboy

check if you switched them by accident. then proceed in jiggling the wires to see if it starts. If it does, you need to replace the harness.

chrisxuereb12378

No it does not! :-/

chrisxuereb12378

Thing is that there is continuity between the ecu plug, sensors, coil etc. Plugged a spark plug directly to the coil and we get one spark and that’s it. Thinking it could be frail wiring :-/

chrisxuereb12378

We finally found what wa wrong. Turned out to be a faulty knock control box 951.618.113.02