Hey guys new to the accord forum after moving from a f150 to a car but having some trouble with my 2001 Honda Accord ex 3.0 after installing a heater core yesterday. Everything seems to be hooked up and all the lights light up when I turn the switch on and it turns over but won't crank so where did I go wrong or any advice if you've experienced this. Could anyone send me pics of their wiring harness diagram to see if everything is hooked in the right place just to be sure

 

Can you scan the computer for error codes?

 

I can somehow see if I can but I don't have a scan tool or tuner anymore so I'll have to see what I can do

 

Check your ground connections. Especially #101 that attaches to the engine from the body. Also double check that everything is back in place like it was before you started.

 

Could you show me all the ground connections and where they would be? All the wires are where they suppose to be

 

Does the check engine light remain on when you try to start the car?

What did you have to remove to replace the heater core in your car?

 

I tried a scan tool to read the code and it wouldn't even read the code but the check engine light stays on. I had to remove the center console, whole dash and majority of the wiring harness

 

It's going to be tough to figure out where or what is not connected.....what does the green key ing"do when you turn the car to on - again trying to narrow down a circuit that is "missing"

When you scanned for codes were there none or was there "no communication"?

 

Now the check engine light isn't on anymore and I checked to see if it was getting power to the all the fuse box and it's not getting power to the fuse box under the hood

 

That sounds like a battery terminal connection, or a blown 70 amp main fuse.