hey everyone im having some problems with a 1990 ef civic si with sohc zc engine
first ill start with the idling problem wen i start it in the morning it idles fine wen cold u drive it for a little bit and it revs from 750rpm to 1500rpm i changed the o2 theres coolant in the car new distributer..does anyone have any suggestions ??

now to fuel start problem doesnt happen all the time. wat happens is every so often i would go 2 start the car and it would read half tank and i definately know theres gas in there and the gas gauge would drop way under empty and the car would cut out does anyone know wat this problem could be

and last is when i fill up the civic the gas gauge only read 3/4 any suggestions???

 

anyone??????

 

sounds like you could have a wiring issue on the harness that goes to the gas tank.

the float could be bad if it only reads 3/4 when full.

 

do u think it could be grounds and the float thats causing that

 

It could be. Use a test light to see if you have a good ground and jiggle the wires while the test light is on there to see if its loses ground.

 

do u know where i should be checking for the grounds etc???

 

sounds like you need a Helms manual bro.

your should be able to access the harness that goes to your fuel pump by taking out the rear seat. its held in by a 10mm bolt just to the left of the center line under the back rests.


the idle problem sounds like a bubble in your coolant system. jack up the front of the car with the rad cap off and keep adding coolant until you dont see any bubbles. it could take up to 45 minutes. make sure the car is at normal operating temps when u bleed it.

 

thanks i know where the harness is i was wondering where the grounds are do i pull the plug apart and test from there ???

thanks for the coolant trick ill try that out do u think i should flush it out and re do the coolant ???