new battery wont start with a jump
 

Hello iam a noob when it comes to cars, But i have just brought a mazda rx8 and wow it looks so nice. Anyway a few weeks ago the battery was failing so i brought a new one for £80. I dont use the car much at the momment but start it up every 4 or 5 days, soon as i turn the key it roars sounds cool.

But then i did not start the car for about 10 days, So i turned the key and the engine went click, click and failed to start. So thought i get some jump leads, So next i try and jump my mazdarx8. But now it was not going click click, the instrument panel lights were out, But the headlights work and indicators were fine. But the car failed to turn over.

I also accidently touch the battery terminal with the jump lead and see a bright spark, Maybe i have to clean and check leads on battery, But they look clean and the car was starting fine 10 days ago. Please can someone help :sad:

I would guess that you blew a fuse when this happened . Hope you didn't reverse the polarity ?

Sorry i only just touched the battery terminal when i removed the jump leads, Thats when i see the spark, Which think proves the battery is ok.

Put a voltmeter across the battery to see what its charge is really like. A nice spark when you connect a jumper battery, with correct polarity, means your battery is down. Hooking it up backwards would give a more spectacular event.

Ken

Thank you so much will try this tomorrow.

I hoping you are not going to try for the "spectacular event " LOL

Like it, Quess i soon find out :)

Wonder is there a button or switch that kills the engine to stop car from being stolen?

Did you do as advised ?

check the battery voltage or just have it towed into a shop.

since it hasn't cranked it likely isn't flooded, yet.

yes i check battery voltage in the morning :)

Charlie, do you have access to a battery charger,if so, disconnect the negative cable,some ppl say disconnect both Neg and Pos, but just Neg will do, let the charger trickle charge overnight.Clean both terminals with vinegar, wipe clean and apply a coating of vaseline to the posts.Clean the cable connectors the same way. Connect them to the battery after it has charged. Then get back to us if you still have a problem.

Hiya sorry about the delay in replying have cleaned all conections, try jump start still not work, my steering wheel locked and when i put key in ingtion i getting no lights on the dashboard. Seams there no power at all.

you are either not getting a proper connection on the jump.......or you have blown a fuse..not to many other options.

Thank you for reply, What fuse and where is it please :)

If you have nothing...check main fuse...on the front L corner of the underhood fuse box. Otherwise check them all :)

so a week after i suggested you had blown a fuse ..................... you still haven't checked the fuses ????????????????????

I think he's still looking for his voltmeter.

Ken

Ok battery is perfect been tested by voltmeter, So tomorrow i remove and change 120a fuse.

If this fails quess it could be a serious problem :):wallbash:

No point changing a fuse that isn't blown . Do you know how to tell ?

It wont be the main fuse as you said the lights still worked . It will be one of the fuses in the fuse box on the right on the engine bay .

From your posts so far ....................... my advice to you would be to leave your car alone and let a mechanic deal with it .

[QUOTE=Brettus;4573728]No point changing a fuse that isn't blown . Do you know how to tell ?

It wont be the main fuse as you said the lights still worked . It will be one of the fuses in the fuse box on the right on the engine bay .

From your posts so far ....................... my advice to you would be to leave your car alone and let a mechanic deal with it .[/QUOTE

Thank you so much for your advice, would it be a blade fuse then like engine 15a.

It will be one of those . There is a gadget attached to the fuse box lid for pulling out fuses . You can tell if it's blown because it will look ............... blown ;)

So i try the 15a Engine control system, power steering, Which power steering not working at moment, This could be the dead fuse :)

Not sure what the IG KEY 15a fuse, just say various circuits.

Not sure about EGI COMP1 EGI COMP 2.

EGI INJ Must be fuel injection.

But think i replace the 15a enginge control system and the IGKEY 15a fuses.

I will ask you this one more time ...

Do you know what a blown fuse looks like ?

not sure what blowen fuse looks like ?