Author Topic: ECU's and Electronics  (Read 2075 times)

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Offline Bfit

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Offline Bfit

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Re: ECU's and Electronics
« Reply #13 on: September 27, 2018, 08:06:54 AM »
?
Freedom's just another word for nothin' left to lose
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Offline Vettech

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Re: ECU's and Electronics
« Reply #14 on: September 27, 2018, 09:39:26 PM »
Its sold.

Removed +ve cable assembly. Wires and cables in wrappings and corrugated tube.

Still full of all manner of fuel, P/S fluid, coolant, dirt, sand.......

Sensing wires giving all manner of varying resistance.
Dissmantled the plug, cleaned, soldered the crimp, retensioned etc

Appears the Alt sees 12v on this lead, if low it upps the Alt output.
If this lead has resistance, then the voltage becomes low.

Re-assembled the plug/cable and replaced, appears fault lifted, but then again this was an "intermittent" fault to stsrt with........
Vettech.

Offline Bfit

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Re: ECU's and Electronics
« Reply #15 on: September 27, 2018, 09:53:37 PM »
Have you changed the battery in the multimeter
Bfit
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Offline Vettech

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Re: ECU's and Electronics
« Reply #16 on: September 27, 2018, 11:16:00 PM »
Volt and ammetres do not require batteries.

But this here Ipad does - good night.
Vettech.

Offline Bfit

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Re: ECU's and Electronics
« Reply #17 on: September 28, 2018, 06:58:28 AM »
Arr and then there is ohms , resistance ,
To battery or not to battery thatís is the question
Bfit
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Offline Vettech

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Re: ECU's and Electronics
« Reply #18 on: November 20, 2018, 03:37:12 PM »
This car was fine for many years, but then started to eat H4 headlight globes, some one said the Alt output is set tooo high. Was fine each time I checked.
If going over 80kph I would always put headlighrs on - new cars call this "daytime running lights", so blowing globes Would be inevitable.

But if Alt and wiring was defective, causing short stints of over voltage, then no wonder the globes went.

But this would eventually cause kaos with the electronics.

I've now replaced both Batt, wiring and Alt.
Voltage is 13.8 - 14.4, does not miss a beat, irrespective of loads. (A/C Highbeam etc)

We also have a Jaycar $14 el cheapo digital display voltmetre taped to the dash and reading volts at Cigar lighter. In field of vision, easy to read.

Car now cuts out more than ever, but Alt output is constant, we are now down to the last faults, most likely caused by long term high Alt outout.

Now it goes to Ford........... there is no choice, the ECM Iookes tobe epoxy filled, changing electrolytics or capacitors is out of the question.

Vettech.