Baby99EX

Hi, We took the thermostat out, now it won't turn over, is that why? nothing else was changed and it started and ran fine right before this.....thanks....

mk378

It won't crank, or it cranks but won't start? In the latter case, check the ground wires on the thermostat housing.

tony_2018

ecu ground wire missing.

Baby99EX

what??

civic402lx

Check what he said. Ground wireS, on the t-stat housing. Google it if you dont know what it is.

mk378

There should be 3 or 4 small black wires that come together into a single lug connected to a bolt on the thermostat housing. Those wires ground the ECU system. If it is not connected, the car will crank but not start.

Baby99EX

It won't evan crank now, but i will try to get that bolt on the thermostat housing........

mk378

If it doesn't crank, that's a different problem. Check that you didn't pull the wire off of the starter by accident. If the starter makes noise but doesn't turn, check that the engine is not seized.

Baby99EX

its NOT rom having the thermostat out tho right??

mk378

No. Taking the thermostat out doesn't really help anything though.

I assume it has been overheating, which is why I suggest checking that the engine is not seized or hydro-locked by turning it by hand with a socket on the crank bolt.

Baby99EX

It was the starter ground......i took it off, sanded it with sandpaper put it back on and it started right up......thanks fellas.

tony_2018

Starter doesn't have a ground wire, it grounds through the starter chassis

Baby99EX

Umm, it has a screw on it that goes to a ground and thats what it was was a corroded terminal.......