LH jetronic relay failure symptons and replacement
09-22-2008, 03:07 PM
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LH jetronic relay failure symptons and replacement
Over the weekend my 928 S2 failed to start. 
It would crank, but it would not fire. After using the WSM I found the relay feeding the LH jetronic brain failed. Only getting 7.2 VDC on plug X pin 9. Ordered 4 new relays from DR.
For 2 months before this failure, I noticed the engine running a little rough, less power, and when the car was cold, it would take a long time to start. Now, after replacing this relay all is well again.
This got me thinking, as these relays age it is probably a good idea to replace these "mission critical" relays. Every 10 years or so???
Has anyone had any similar experiences?
It would crank, but it would not fire. After using the WSM I found the relay feeding the LH jetronic brain failed. Only getting 7.2 VDC on plug X pin 9. Ordered 4 new relays from DR.For 2 months before this failure, I noticed the engine running a little rough, less power, and when the car was cold, it would take a long time to start. Now, after replacing this relay all is well again.
This got me thinking, as these relays age it is probably a good idea to replace these "mission critical" relays. Every 10 years or so???
Has anyone had any similar experiences?
