These are some of the problems to look for when car won't start / crank.
1. Check the battery - note that even at normal voltage like 12.5 ~ 12.7 volts there is a possibility that it won't be able to start a car. That's why mere a multimeter device won't help in this case. You need a real battery health checker to check the health and capacity of current it still holds.
2. Grounding cable - grounding cable can be a problem especially that leading to a starter / crank motor. It can be damaged (burnt) due to aging and frequent high current delivered to the starter.
3. Fuse - check each of the fuse for continuity using a multimeter device.
4. Faulty fuel pump relay - use visual inspection first to check sign of burnt or damage. And interchange with other existing relay for testing purposes and start.
5. Ignition switch - faulty ignition switch also can lead to car won't start.
6. Bad fuel pump / spark plugs wiring
7. Faulty fuel pump / spark plugs
8. Faulty crankshaft and camshaft position sensors as well as their wiring could also prevent a car from starting.
9. Automatic transmission if it the gear on D (Drive) it also won't start the car. Shift it back to P or N and start again.
hello bro....im glad found this blogspot. Thanks for sharing.
ReplyDeleteim planning to do this diy => https://www.youtube.com/watch?v=9KdihbGiTo4 . i just wondering where is fuel pump relay? And what if i pull out the relay? possible as what shown in the video?
Hi thx for dropping by...I understand that maybe looks quite easy for you but as a newbie especially in DIY project safety should be the no.1 priority. As for my personal advice I would rather take that injector out and clean it one by one which is way safer than the one showing in the video.
DeleteAlthough the fuel injector cleaner maybe less flammable than gasoline but it can pose a greater danger especially spraying into finer mist by the injector. By doing this you will also have your fuel line expose in the engine bay and there is also vaporized fuel gas inside the charcoal canister.
However if you are willing to go ahead you could remove the EFI fuse. It should be stated on the fuse box EFI fuse which will stop the fuel pump from running.