ok so i was crusing around a corner and then my car dies. i try to start it but it acts like a dead battery. so i attemt to jump it, no luck with that. not sure but i belive my alternator is out.
-it was at full cranking power when being jumped.
-just replaced the belt.

-Alternator or battery? or something else?

thanks for the input.

 

check the voltage at the battery with the multimeter while the car is running if you can get it running. charged the battery or use another one just to check it.

 

yeah thats the next step.but it would have started while being jumped regardless of the battery.
how would i check the alternator?

 

with the car running measure at the battery the voltage should be 13 or above if its less or voltage dropping then weak or dying alt, also check the white wire comming off the alt, ive seen those break and it causes the alt to stop charging.

 

OK get the battery recharged at autozone or something or buy a new one or borrow a friends more than likely if while you were driving it just died its the alternator being that if it still worked it would of been fine till you turned the car off then you would of been screwed being that the alternator would keep the car running without the battery in the car at all.

 

i actually had this problem when i first got my rex! i was driving home from my buddies like three days after i got my car and it was my dizzy! check your cap and rotor first and/or check to see if you're getting spark and if its strong! from the spark plug wires! If you get the car started before what i said above. take off the negative on your battery if the car dies its your alternator! good luck let us know how it goes!

 

88 brings up a good point,
So when you tried to jump it, it didnt start? If not then you are looking at another problem. I had a similar prob to 88 where the screw on the rotor of the dizzy come out and so no spark, If it doesnt start at all check the big 3 spark, air, and fuel. Most likely spark, always remember to check the cableing.

 

when you jumped it did you have the positive cable on the battery and the negative cable on the engine? that could cause the car not to start. with a dead battery.

 

Thanks to everyonw who replyed!
i will definantly be checking all things mentioned.
i have had 2 broken caps due to the carbon part that has the spring on it that goes into the coil being broken off, but never while i was driving.
i will charge it up and try and start it then look to the distributor.
let you know in the mourning.

 

ok so i just got back from the car and i have no fuel or spark. no 2 second prime from the pump and the plugs are white and not firing.
my guess is main relay.

 

Is the car cranking and not starting?

When it died originally did it still crank but not start?

When you tried to boost it did it crank?

A failing main relay will typically cause your car not to start, but won't cause it to die while driving.

If the car has been cranking the whole time and not starting, check your timing belt.

If your battery was dead and that caused your car to die, then your alternator isn't charging it. You can pull the alternator and get is tested for free at Autozone.

 

Little comment on when the alternator dies, for future reference: If the charging system warning light (the lamp with the battery icon in it; very misleading, because it is not a battery failure light) in the instrument cluster never comes on (except at start for the lamp check), then your alternator is likely fine.

A pretty decent guide for checking the coil, igniter, and main relay is at http://www.tegger.com/hondafaq/faq.html#startrun

 

if you're not getting spark it could be a good change that your dizzy or a part of your dizzy (cap, rotor) is done.
what i would do and have done in the past to trouble shoot is take the cap off of my dizzy and crank your engine (just for a quick second) when you crank the engine have a buddy check to see if the rotor spins on in the dizzy. no spin usually= Bad dizzy! unless the screw isn't in the rotor.

 

That could also indicate a broken timing belt.

Check the timing belt.

 

i have a similar problem like that..except i replaced the starter and the dizzy ..i get spark but it dont start i been looking at this and done all and my car still wont start...
its a 92 da ..

 

yup if your nor priming first thing id look at is the main relay, good luck.

 

super low crank untill it was being jumped.

timing belt seems new with no missing teeth and it is tight.

 

Another thing; its not priming and i cant hear the pressure in the rail but i will crank then crack a fuel line and it will squirt out.

Also my ecu has a solid red light.. not blinking.

 

Can you get a working main relay off of a friend or something?

I have to agree that no spark/no prime is usually main relay related.

 

yes i tested my relay in my friends ef and turns out it is bad.

still unsure on the alternator. the battery signal light never did come on but even after charging it acts like a its dead, witch leads me to belive needs a new battery.


I will get my new relay and plug it in, then jump it and have the battery tested somewhere.
Thanks.

 

Bad day, picked up new relay and it didnt start. checked my fuses again and 15 a fuse for the ecu keeps blowing. that fuse is for the wire from the main relay to the ecu. i dont get it.

also no red light from the ecu now.

what could this be? short somewhere?
please help out, i have owned the ef for 2 1/2 months and have only driven it for 2 days.

 

RonJ@HT had a good catch in another alternator thread yesterday: "When you turn the key to ON (II) without starting the engine, does the charge/battery light turn ON?" If not, the charging system warning bulb is blown or possibly something else is wrong with the charging system.

The steady ECU light you had earlier points to a malfunctioning ECU. Again when you turn the key to ON (II), does the CEL come on?

You need an ECU test harness and a shop manual to really narrow down what ECU wiring is amiss. The following (for the CRX) may not match your Honda exactly but might give you some ideas:
http://media.honda.co.uk/car/owner/m...SH200/6-21.pdf

 

yes battery light comes on and their is a cel.
i have that same diagram from alldata.

 

k so jumped the wire from the fuse box to the main relay and still poping fuses so not a short unless its at the conections.

any ideas?

 

bump anyone?