Quote:
Originally Posted by SS-Traveller Winter's here, and startup issues are common. Usual causes:
1. Battery: Check water level, tighten cables, check gravity. Try jump starting to see if the engine fires.
2. Starter: Carbon brushes. I agree that the brushes supplied may not have been of superior quality. Might need a check. Take a video of what happens during a morning start and post it here (or show to Ayub). Need to figure out if the battery is at fault or the starter motor.
Also as a general pointer:
3. HT electrics: Check HT cables and condition of spark plugs.
4. Newer cars: Check MAF sensor.
Troubleshooting the electrical system is outlined in Post #3 at the beginning of the thread:
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It still has me flummoxed. And worse.
Problem
When the car is warm (preferably after having put in at least 4-5 km, of spirited driving), if you turn off the ignition, and try starting the car, it will just tick over and die. Try again, and it will roar into life, and putter on effortlessly - as if nothing had happened.
Background
After a self overhaul in Feb, 2013, and a new Exide battery, I thought I had seen the end of this problem on our 2003 Santro AT. Unfortunately not.
At Ayub's
I tried showing the problem to Ayub's guy yesterday - and could not replicate it. Anyway, brought the car back to Ayub today - and luckily after a few turns of the key, the problem clearly showed. Ayub ruled out the self (after all he had overhauled it 10 months ago), and also ruled out the Alternator (charging voltage measured @ 13.9 V). He recommended a battery replacement under warranty.
At Exide service center, Okhla
So I took the car off to the Exide service at Okhla (COCO). The guy there measures the voltages. Then he opens the water inlets to measure the sp. gravity and remarks
'is mein bahut zyada paani hai'. As-if... Anyway I tell him in my meekest tone, the battery is as-bought, so the water must be from the Exide company. He vehemently disagees and measures the sp. gravity in all the six cells - a very consistent 1.20 in all six! Then he fills out a form and asks me to visit the service engineer.
I tell the engineer, that the battery needs replacing , he beams and says the battery is in perfect condition, and that my self or alternator need service.
I pretend ignorance of the technicalities instead of outright disagreement, and get Ayub on the line. A war of words ensues between them. The end result is , Ayub tells me to get the battery inspected/replaced by the Exide dealer instead of the company.
The engineer also points me to the fine print on the warranty card specifying an alternator voltage of 14.2 V~14.4 V. I think of telling him, that 2% voltage drop in alternator charging voltage should not be that big a deal, but then I zip it, and start back for home.
While driving home and then at home
It occurs to me, that the field report of the battery was filed away by the engineer, and I was not provided a copy. Moreover if it had excess water, should it not have made for sp. gravity readings out of range?
It further occurs to me that getting a reading of 1.20 in all 6 cells is a bit of a hard to believe. Unless the Hydrometer was screwed up, or the readings were screwed up (intentionally?)
Anyway I don't have a copy, so there's nothing I have to form the basis of a formal dispute.
Then again, Ayub saw 13.9 V steady charging voltage. Was his multimeter in error?
I decide not to do anything, until I take a few measurements of the voltages and if possible get the sp. gravity rechecked independently.
Back at home:
1) Resting voltage at terminals : 12.59 V
2) After starting the car, charging voltage at terminals in steady state: 14.05 (reasonably close to Ayub's 13.9 V but still not in the
ideal band 14.2V~14.4 V)
3) Got the wifey to recreate the problem by cranking the engine a few times. When the problem does occur (on crank), the voltage drops to 8.99 V ~ 9.29 V for a fraction of a second. Then the engine roars into life and the voltage goes to 14.05 V
4) When the problem does not occur (on crank) , the voltage drops to 11.40 V for a fraction of a second. Then the engine roars into life and the voltage goes to 14.05 V
Questions
1) Where in South Delhi can I get the sp. gravity checked reliably? I prefer not to depend on Exide for this measurement - just to rule out the obvious conflict of interest w.r.t. warranty replacement cost.
2) Does my alternator need a service?
3) Will 'charging' the battery up at the local dealer for a full 24 hours help?
4) Is the self really OK?
5) I don't think there's anything else that's the issue - but does anything else seem likely to be the culprit?