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Hey all, ive been having this issue for a little while now and i have tried a few things to fix it but to no avail.

So, whenever i hit a speed bump or a pothole the car goes too die, the revs pick up then it throws the check engine light making the car run super rough at idle to about 3k then it revs normally after that, until you stop again.

The codes are; 3 & 14, which are map sensor and IACV, i have replaced the map sensor and it didnt fix it and also cleaned the iacv which didnt fix it either.
I'm out of ideas and have know idea what too look for now.

The car is an ef6 crx with a d15b sohc vtec motor. i hope someone has had the same problem that knows what fixed it.
cheers Greg.
 

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ej8
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Harness, inspect the wires.
2x ^

I had a broken map sensor wire. It would run fine most of the time then out of the blue it idle like crap and afr was in the 10s.
Since it was obd2 I check the voltage and it was like 3 volts at idle.
If the wire leading back to the ecu is broken it will raise the voltage throwing a code.

In the iacv. Try to unplug it then plug it back in. But check it's wiring also.
Use a volt meter. Move the wires around when testing also.
 
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