Jump to content
SAU Community

Recommended Posts

Hey all not sure if this is in right section but i have a problem i have a r34 skyline and it has a high flow fuel pump directly wired to battery. When you first start it in morning cranks and fires stright away but when you drive it somewhere like i went to servo other day and turned it off and then tried to start it again and was very slow cranking like the battery was going flat so i changed the battery thinking it might have been old but nope its got the stock size 430cca do i need a bigger battery or is something else? Alternator? Its been doing it since i have owned it and sometimes it doesnt even start just cranks slow then clicks like battery hasnt got enough kick or is flat. Any help would be great thanks.

 

Aaron

Link to comment
https://www.sau.com.au/forums/topic/470512-battery-problem/
Share on other sites

Have you checked voltages with the car off, cranking and running?

Test those and report back

Im going to suggest it might be the starter motor if it is worse when the car is hot. And you have changed the battery. Interested to know the charging voltage (with car running)

  • Like 1
Link to comment
https://www.sau.com.au/forums/topic/470512-battery-problem/#findComment-7830564
Share on other sites

As 89 CAL said starter is likely, but I would also check the earth straps, esp. to the block.  Starter motors can go lazy if the motor has a poor earth.

 

Easiest way to check this is [is your battery in the boot?] use both jumper leads end to end and connect from your negative terminal to the motor direct then try starting again.  If it works then its an earth strap, if it doesn't then its probably the starter motor.

Link to comment
https://www.sau.com.au/forums/topic/470512-battery-problem/#findComment-7830743
Share on other sites

Have you checked voltages with the car off, cranking and running?

Test those and report back

Im going to suggest it might be the starter motor if it is worse when the car is hot. And you have changed the battery. Interested to know the charging voltage (with car running)


Pretty sure the $20 is mine. I was first in with starter motor [emoji108]
Link to comment
https://www.sau.com.au/forums/topic/470512-battery-problem/#findComment-7832667
Share on other sites

27 minutes ago, 89CAL said:

 


Pretty sure the $20 is mine. I was first in with starter motor emoji108.png

 

No way - your starter motor suggestion was before the $20 bet was placed. I'm claiming it as I called him out on his fuel pump comment:) I think I'll buy about 12 litres of E85 (unless the price has gone up again) to run through my fuel pump.

 

Maybe he'll give us both $20...

Link to comment
https://www.sau.com.au/forums/topic/470512-battery-problem/#findComment-7832674
Share on other sites

On ‎25‎/‎05‎/‎2017 at 8:48 PM, breaker1845 said:

Twenty bucks says its a weak earth to your fuel pump. Fix that problem and it'll crank everytime if your battery/starter is good.

breaker18445 he send it me guys............it is offishal, you want $20 please to open visa account in your name and send me direct to the numbers [card number, CCv, and pin] and me will collect release $20 to you of eech

Link to comment
https://www.sau.com.au/forums/topic/470512-battery-problem/#findComment-7832774
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Sounds like you've got an interesting adventure ahead here with local support if you have trouble! My guess is that, unboosted, you will be OK with a small upgrade like -9. What will happen is that once the stock ECU sees more airflow than it expects it will add a heap of fuel and pull a heap of timing to be safe because it can't understand how it could get that much air without there being an issue. You will see clouds of black smoke and it won't pull hard through the midrange and top end. So, overall it will be a bit frustrating but should be OK. If you are still nervous set the base timing back 2o through the CAS, but it will be even more sluggish everywhere. As said above through...this is not my guarantee your engine won't be blown into a million pieces, leaving you looking for very hard to find parts A better idea is get a computer with logging ASAP, wire in a wide band O2 sensor and a use remote tuner. I've done multiple cars this way and while it is not as good as a specific tune on a dyno they can get it 90% right. I'd suggest if you can afford an R33 GTR these days you can afford an ECU and tune. And if you can't afford that you sure won't be able to afford the rebuild if it goes bad in the meantime,.  
    • Yeah it would be nice if someone took the time to put that sort of information together, but there are a lot of variations in looms. I think you are making this way hard for yourself if you just want to get it running....sourcing an SR20 with the right wiring will be a billion times easier than matching the RB loom to an S15 chassis. If you do end up going this way, you just need to trace every wire in the loom with a multimeter, 95% of them will go to a location you can confirm at the ECU.....and then post it up for the next person who needs it  
    • Just top it up with water, and keep a general idea of how much you added. It is normal for water to be pushed into and pulled out of the reservoir through the cap, and it should not be more than half full or it will be likely to overflow when hot. Any decent mechanic can do a pressure test of the cooling system to confirm if you have a leak. Keep in mind if it is only leaking a little and when hot it may well evaporate before you see it hit the ground
    • I'd ask the shop what they used and use that. Mixing coolants is sometimes OK, sometimes not, and you have know the details of each coolant to know whether it's a good idea or not.
    • Is it alright to top up with just another green coolant?
×
×
  • Create New...