Question for a car Guru?

Question

My battery is fully charged tested). The alternator works (car battery stays fully changed), the starter works (car starts if I jump start it). My car will start with a jump start, but won't turnover without one. The battery terminals are secured tightly.

Does anyone have any ideas of why this is the happening? The voltmeter and my battery changer both say the battery is at full strenght.

Anyone who can answer this question is truly a car guru.

I just found out that the car also has a blown IG Fuse It's a bent male 50 AMP fuse that has to be special ordered, perhaps this info helps...

Answer 1

I would say the battery should be replaced.I have run into this problem a number of times with a battery that has a bad cell.This will show the correct voltage but little or no battery amps.

Answer 2

Is This car a GM product with side post terminals? If so, it is possible that the actual contact area of the terminals are not making a good connection to the battery, so when you jump start it, the jumper battery connects thru the bolts on the terminals thus supplying adequate voltage to start the car, and then once it's running, the alternator supplies enough juice to keep it running. Try using every accessory all at once after starting and disconnecting the jumper cables, and note the voltmeter reading. Other than that, are you connecting the jumper cables directly to the battery or are you connecting to an auxilary terminal for + and to a good ground for -? If that is the case, I would suspect maybe your ground strap may be bad. In any case, make sure all the terminals are clean on both ends.

Answer 3

Your battery is dead! There are two ways of measuring voltage: "constant voltage" which is the one your measuring and the "cold cranking amps" (CCA), that's the power of measurement that's used for when your gonna start your car and your current battery is not reaching the minimum amperage to turn over your car, that's why you need to jump start it. GET A NEW BATTERY it's cheaper than a new alternator or a starter. :)

If you want to test this out put a voltmeter on the battery and try to start the car...your gonna see the voltage drop.

Answer 4

The amount of current required for the starter is much greater than the current needed to charge the battery. Thus a bad cable/connection could actually allow one but not the other. That is where to start, checking the battery terminals, cables, and positive/ground connections for corrosion/tightness.

Answer 5

maximum those vehicles are all jap vehicles ^^^ different than some.. supras the suited tho torque measures how annoying something is grew to become around. as an occasion, think of a wrench or spanner attempting to curl a nut or bolt. the quantity of "twist" (torque) relies upon on how long the wrench is, how annoying you push on it, and the way nicely you're pushing it in the dazzling path GT skill gran turismo often badged on pastime type vehicles like a mustang to a mustang GT skill the different one often has extra capability below the hood, the extra sporty one. rapid and superchargers are the two an analogous on what they do, the only way you get extra capability out of a vehicle is thru including extra air and or gas to the combustion. turbos and supers and extra air, and while extra air is further, extra gas should be further, extra capability. turbos suck in air while the exhaust gases spin the turbine, the blades are inverted and suck air in, previous it via the intercooler the place the compressed air is now cooled, cooler air has extra density, extra capability.. supercharger does an analogous sucks air in, works of the crankshaft belt, and sucks air in additionally, their bascially an analogous. Nitrious is purely a chemical pushed into the combustion with gas the air gas to grant extra bang, extra capability while u desire it.. the massive factor your guna learn in tuning engines is that its all approximately air and gas combination, A/F ratio.

Answer 6

it is very posible that your starter is not getting a good connection at the solenoid or the internal solenoid connecton. The only way to check this problem is with a "vat 40" or a comprable tool. A reputable shop can test it properly for a minimal price, just explain the problem to the mechanic, not the service writer.

Answer 7

This happened to my mother's 2001 Olds intrigue a while ago. An auto electrics shop said it was a corroded battery cable. $15 and one day later, start up perfect.

Answer 8

if your sure your cables are positively perfectly clean on the battery and cable ends your battery cables have to be bad, replace both the positive and negative battery cables.

Answer 9

sounds like you have dirty battery terminals...clean them and check all the connections...at the starter ...the ground wire from the battery to the engine...this almost sounds like it could be the problem...or your battery cables themself are bad...I'd look at the negative battery cable first...grab it and give it a good hard tug...then check the connection of the negative battery cable where it bolts to the engine.