itsaguything
Member Since: 25 Apr 2019
Location: Ottawa
Posts: 90
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You’re right, its a case of cause and effect. Glad you went to sdd to check for codes. Though I’d prefer to sort the root of the issue before just indiscriminately replacing parts. And perhaps the old battery and alternator failed load tests, Though that wasn’t mentioned.
I have decided that on my vehicle, the alternator is wrongly sized and inadequate for the job. This is based on the situation where if in the evening and I have many electrical system components running, the headlights will dim should the car be at idle and I am concurrently in reverse. (I solved these problems on my boat by installing another alternator for the secondary battery bank, though many thought it was not necessary). But we only have 1 battery... and this situation does not result in a dummy light on the instrument panel. (I’m a meter or gauge man. I detest dummy lights as the illuminate when its typically too late)
In days of past I would have suggested a second glance at the voltage regulator. A resistance test on the cabling. A confirmation of good grounds and a confirmation of the health of the mains. In my experience, as vehicles age, the grounds are typically not good. And voltage regulators (resistors) start to lose their efficiency. Also as cabling wears...
Of course, common culprits like water ingress, electrical shorts, etc need be ruled out.
Clearly hunting the suspect takes a methodical approach and a good amount of time. Thus the reason some unfairly claim servicing at any shop is expensive. I for one would head to a professional that knows the vehicle exceptionally well, has a database of tech notes available and the proper diagnostic tools to efficiently sort the issue out. or the game of yank and replace every part until by chance it gets sorted... Guy Pensa
Cars with Personalities
Getting itchy. What's next?
2014 Land Rover HSE Lux (blend of practicality and aggressiveness)
2007 XKR (Jaguar Racing Green) (woo hoo!)
2004 XJR (Jaguar Racing Green) (deceased)
2002 S-Type R (British Racing Green, of course)
1951 Riley RMD (Black, time for that restoration)
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3rd Apr 2021 11:44 am |
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