battery charge

[Racin Jason]

man i cannot figure this out. my car will start every time its cold but as soon as it gets warm,it wont start it drags the battery down to 8 volts...any help would be sweet thanks

[Black Horse]

Sounds like a bad ground somewhere.

[sean]

Had a car do this exact same thing. The smaller wire coming off the neg side of the battery was corroded and thin. I replaced it with thicker wire i had in the garage and it didnt have the problem again. Also I had a car that the starter was getting really hot as the car ran. ( to close to the exhaust) and if i shut the car off it wouldnt start the car again until it cooled off.

[Racin Jason]

forgot to mention battery is in rear same problem with every starter,battery and solenoid. im gonna try the starter wire,or wrapping the starter

[sean]

Im not sure wrapping the starter would work as well as wrapping the heat source close to the starter. Wrapping the starter seems like it would insulate the starter and keep it hot. Dont know though. Just always wrapped the thing that was causing the starter to be hot.

[Racin Jason]

i will wrap the downpipe,header already done
thanks for the input guys,....

[sean]

let us know how it goes. If that doesnt work I would say its a ground as long as the battery is charging properly. How long ago did you do the battery relocation and how long have you had this problem?

[Stangman]

How's the ground from the block to the firewall? That's an important one as well.

[Rick93coupe]

Where do you have the battery grounded at?

[mike w]

I had a similiar situation with my car, i fought for many years. It was suggested to me on another web board to run a wire from the negative side of the battery to the mounting post of the starter. Made a huge difference in my car.

[Racin Jason]

ok, i have 2 4 ga cables going from each side of my block,battery is grounded by a bolt into the framerail,drilled and tapped hole..starter maybe bad,,,charging fine,,checked it...only when it gets warm..

[Rick93coupe]

So from block to frame up front and battery to frame in the rear? If so thats not really a good enough ground. Run an additional line from the battery up to the block where the other ground is.

[Racin Jason]

hey rick,,mike has said good things bout you.. i could use some input..hit me up and maybe we can meet and check the car out....... i live in kettering

[Racin Jason]

it did make 500.75 at 8 .6 lbs.not to bad