Won't Start at times

[thorgal]

Yes, I have tried that and all appeared fine. If i can recall...sitting idle was about 12.45v, when I started it, volts drops momentarily to around 11v or so, once started it is around 13+ volts. I was wondering, is it possible to spray starter fluid on these LR3's, like we use to do to carburetor cars?

What do you mean , it reads 13+ volts?. Good working alternator should pull, under load, at least 14.25 and up...A brand new battery should read 12.60( six cells, each cell 2.1 volts=12.6.your alternator might be failing slowly , if it is only above 13 V, that is too low, as it should produce almost two volts more, when working ..just a thought...

 

[roverman]

I'm confused, if it always cranks and sometimes doesn't start and the battery is new-ish, and was tested, why look at the battery, or the starter for that matter?

 

[mj1672]

What do you mean , it reads 13+ volts?. Good working alternator should pull, under load, at least 14.25 and up...A brand new battery should read 12.60( six cells, each cell 2.1 volts=12.6.your alternator might be failing slowly , if it is only above 13 V, that is too low, as it should produce almost two volts more, when working ..just a thought...

i will retest and gather the correct votages.

I'm confused, if it always cranks and sometimes doesn't start and the battery is new-ish, and was tested, why look at the battery, or the starter for that matter?

i read on the forums where a faulty or cracked battery could read 12v but cause startup problems among other weird things.

 

[mj1672]

I seem to remember reading that its a bad idea to put any additives in these cars, it has a chance of messing up the mixture ratios

i just wanted to spray a little starter fluid into the engine to test if my fuel pump was getting gas into the engine. Of course i wanted to test this when the engine didn't start.

 

[mj1672]

Truck started this morning, but decided to put my scanner on it even though Check Engine light was not on. Well, for the 1st time i see P0628 - Fuel Pump Control Circuit Low. Is the fuel pump easy for an amateur like me to get to? If not, I will take it to the shop.

 

[mj1672]

I grit my teeth and took my truck to the LR Dealership. Finally, they were able to see the trouble and diagnosed it as a faulty cam shaft sensor. The damage to my pocketbook is only $325 or so. thanks to everyones suggestions.