tetfemal

I swapped out a motor that blew a head gasket out of a 98 honda accord ex with a motor I purchase from a jap engine importer. Before I dropped in the new engine, I replaced the water pump, timing belt, rear main and front seal, new ngk spark plugs, spark plug wires, oil filter, and oil. The new motor didn't have the engine temperature sending unit on so I pulled it off the old motor.

After everything was said and done, the car won't start. After I triple checked everything, I can not figure out why.

While wiring up the car, I noticed that a green sensor on the transmission and the green connecter on the wire harness didn't match up. Which is weird because I remember unplugging it before the old engine was pulled out and I am using the same transmission and wire harness. Can someone identify this sensor and tell me if it can prevent the car from running? (Disregard the sound in the video, that's another car/problem in of itself)








Also, there is a another black connector that I could not find where it plugs into. It looks like an IAT sensor connector that is usually on the tube that connects the air box and throttle body, but there is no sensor there.

tetfemal

Should I try using the old crank position sensor from the old motor or it shouldn't matter?

Also, I am using the ecu that came with the car

tim73

Did you by chance take any pictures? Something isnt wired right. You may have crossed up something. Look at old engine...make sure everything is the same as new engine. That green one I think goes to the ECT sensor in teh tstat housing. theres a black two wire one, undernear the dizzy...thats another temp switch(I think for the cooling fans)

Take pictures, zoomed out a little, so I can see it relative to the engine. Also, look at wire color, that will tell you what is wrat...get a good wiring diagram, with wire colors.

tetfemal

No, just those couple of pictures posted. I'll re-look at the wire to see if a wire was crossed

Lost Again

Can we assume this is a 4 cyl? Many times there is a ground wire that gets missed - G101.

See #16 in this pic.

tetfemal

I finally got a chance to look at the car again today (Im in graduate school in Orlando but live 3 hours south). Double check the wires and everything seems to be in there correct location. The green plug on the transmission is still an issue. There is no connector on the wire harness that matches that plug.



The green plug on the wire harness is paired with the sensor on the thermostat house and the distributor plug. Can some confirm what the green plug on the wire harness is for?



The other plug on the wire harness (black/light blue) is paired with the map sensor and TPS. There is nowhere it plugs up to as well. I think its an air temperature sensor plug, but the sensor is not there.





It's getting fuel and the it's sparking, but I can't figure out what the problem is for the life of me. Here is a video of the car trying to start up.

http://vid67.photobucket.com/albums/...ps143ddd9d.mp4

tetfemal

anyone?

Lost Again

Just me but first I think you have the map and tps plugs switched.

MAP wires - YEL/RED .. GRN/WHT .. RED/GRN

TPS wires - GRN/BLK .. RED/BLK .. YEL/BLU

Having those switch usually will let the car run at idle but will die if you press the gas. In the last pic I can see the map sensor and it looks like the wires are GRN...RED... and something?

Lost Again

Ok, next it would be nice to know the wire colors going into the plugs you "can't find a home for".

Example, the gray connector you have on the t-stat housing I think it belongs to the ECT sensor - two wire sensor on the end of the head under the dist....but again I can't pick out the wire colors good enough to be sure.

tetfemal

I'll take note of the colors of the wires next time i'm working on the car. The ECT sensor is plugged up. If I'm not mistaken, the ect sensor and the temperature sending sensor are paired together correct?

Lost Again

In the 98, there was still two switches on the end of the head. A single pin switch for the gauge and a two pin switch for the computer (ECT).

BTW - I'm not kidding about the MAP and TPS being switched.

tech8

The connectors for the TPS and MAP sensors are switched. The TPS connector is blue, while the MAP sensor connector is gray.

tech8

From the picture, my guess is that the connectors for the radiator fan switch and the VTEC oil pressure switch were cut and spliced back in; but, inadvertently switched.

For the picture, one wire for the green connector is Blu/Blk, if the other wire is Brn/Blk, then the wiring is for the VTEC oil pressure switch.

tech8

The Blk connector looks to be for the EVAP canister purge valve. Wire colors should be Blk/Yel and Red/Yel.

Lost Again

Thanks "tech" - that didn't look correct and I was trying to piece it together.

I know you don't care or want anything to do with me but like I said I've been looking at different things trying to figure out that cooling fan switch - never noticed/thought about the connectors being spliced onto the wrong wires