Mr. Wonderful

Im putitng my car back together and this is the only thing holding me up. My car is a 99 cx which was completely disassembled for a respray. In the process i added power doors from a 99 Si, as well as a dash and floor harness from a Si as well.

All of the power components are working as they should be but i am getting absolutely no power to the engine. All lights and flashers work, as does the radio, cluster, and climate control, but nothing in the engine does and the fuel pump doesn't respond.

When i attempt to start the motor nothing happens. I don't know if this is a relay problem, and ecu problem, or what. I don't even know what the main relay is. So if anybody could give me a couple of options, or things i can do to figure it out, it would be much appreciated.

Thanks for your time.

Mr. Wonderful

bedtime bump

slacks

fuses,,, should be the first thing to check
it's possible the power doors might have blown a fuse somewhere? you never know

Solster

Fuses and that ever Pain in the A** the main relay my car worked just fine but No fuel pump and motor no power and it was the mail relay under the dash was bad. try that first.

Mr. Wonderful

how do i check if its good or not ?

CivicUtah

u can go to wal-mart and get a fuse-checker for a couple bucks.. theres probably a easy way tho idk..

xsuperxsonx

i had this same problem ... theres a main relay ...on the passenger side underneath the dash next to the glove ...box ...take out the two screws from underneath the glovebox and youll see it to the right side ... the main relay controls all fuel and ignition power ....you might want to check that out first ....its $64.00 bucks at honda-tech ....

Mr. Wonderful

ok. i checked every fuse on the car and they are all fine. i swapped ecu's to no avail. So the only thing it can be is the relay right ? i took it apart and looked it over and everything looked alright but i know you cant determine whether or not its ok by looking at it. So if there isn't anything else that it could be, i'll just get a new one tomorrow and give it a shot.

If anybody has any more advice feel free to chime in. thanks

Sloshy

Are you sure that green plug by the ecu is connected, i've had so many ppl call and asked me to come over cuz thers no power to the engine and its that plug the forgot to plug it up

Mr. Wonderful

yeah its connected

stock_honda_coupe

The main relays are known to go out on hondas. I would buy one, see if that fixes it. if the main relay checks out good, then you'll just have a relay sitting around for when it does fail.

Mr. Wonderful

thanks

pgpbubble

Have you checked your thermostat ground?

Mr. Wonderful

update

Replaced all fuses and the main relay, switched out both fuse boxes, checked all connections and grounds. Nothing changed. I have no idea what this could be.

gotnos2

Looks like we are at the same exact point.. My car is doing the exact same thing and im so pissed off.. i replaced both fuse boxes.. main relay.. motor harness &dash harness..

Ill keep asking around also.. if i find out, ill let you know.. if you find out please let me know.. thanks man

Mr. Wonderful

will do man. thanks

i figure its going to be either something really big and expensive or so small and stupid i'll want to /myself

gotnos2

i seem to think its small.. i have a 0 mile motor just waiting to run.. and it cant because the damn thing wont start.. did you take out or unplug any of your fuel pump plugs or the grey plug that runs under your car along your drivers side fuel tank?.

Mr. Wonderful

yeah. i dropped the tank entirely

gotnos2

i seem to think my problem is coming from back there.. like something with fuel pump grounding out or something.. or maybe something with that harness.. or possibly the grey plug one that runs near tank under car.. I replaced everthing dash forward, so i tend to think its coming from back that way..

CivicKGC

seemz like you've checked most of the thingz but havent seen anything about you checking your spark plugz or the plug wirez.. just a thought.

Mr. Wonderful

nah they're good.

good looking out though

gotnos2

even if your plugs and wires were bad, the starter would go and it would try to crank over.. But we are not even getting the starters to try to crank over..
Do appreciate your help though..

gotnos2

Help this man out too..

DCSportEJ1Civic

it just doesnt turn over, or doesnt start? you could try jumping the starter straight to the battery to see if its working or not. is it possibly a bad starter? maybe seized from sitting or something?

Mr. Wonderful

its doesn't do ****. no fuel pump or oil pump. the engine is getting no power at all. im lost for sure