2 days ago, i started my car and it was loud as fck with the CEL light on. Then it goes away within 1-2 mins, up until today driving mid way the check engine came on. Car is loud, its idling between 1,500-1,900 rpm, while in neutral it would not let me rev past 4k. In gear it would also won't allow me to rev more then 4k, but when i hit the 4k mark i see black smoke coming out in the back. the car smells while idling, i hovered my hand over the exhaust and wet black dots were covering my hand. Theres loss of power too


Anywho i've checked all the wires see if their all plugged in, resetted the ecu, and took a look at the throttle body and it all seems fine.

kind of stumped right now, any ideas would be awesome.

 

Since you have a CEL on you should start there first. Scan it, get it scanned, or jump the service connector.

 

whats jump the service connector?

 

check the codes thread in this forum that will help u figure out how to check ur code and identify it, then we can go form there...

 

yeah check the cel but i would say most likely this has to do with a bad o2 sensor

 

could it be the knock sensor?

 

Stop guessing. Go pull the CEL codes:

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/how-pull-cel-d4-srs-abs-codes-code-lists-1901557/

 

took it to the mechanic, he said no codes showed up. its still acting the same way.

 

bump

 

that sucks. clean the IACV. (idle air control valve) with brake parts cleaner.

 

mechanic also said it could be the ecu, but i mean how often does ecu's break.

 

its ur idle air control happen to me b4 and is more common on older honda so yea hope this help

 

wtf??? u said the CEL is on but when he checked it theres no codes???

theres no way
do it urself!

 

xx2^^^

 

put a paper clip into the 2 pin connector, the CEL light just stays completely on, without blinking. gonna clean out the iacv, n hope for the best.

 

cleaned out the iacv, it idled better but still sounded loud as ****. same **** is happening over my hand over the exhaust and my hand becomes wet with gasoline. Checked the spark plugs and they were pitch black, the car still isn't able to rev past 4k.


could it be a sensor? Checking the CEL light it shows no codes.

 

turns out to be a bad ecu.

 

^^^ so its fixed? Thats it?

 

yea its fixed, stupid ecu.