ok, i just got my ecu back and vtec wont engage, and it wont rev past 6500 rpm's.. i am getting engine codes 14 (idle air), 21 (vtec), and 41 o2 heater circuit.. i have the spoon chip installed so it should go up to 8K..anyone ever had this problem??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackedoutcivic &raquo;</TD></TR><TR><TD CLASS="quote">ok, i just got my ecu back and vtec wont engage, and it wont rev past 6500 rpm's.. i am getting engine codes 14 (idle air), 21 (vtec), and 41 o2 heater circuit.. i have the spoon chip installed so it should go up to 8K..anyone ever had this problem?? </TD></TR></TABLE>

The problem is that it has CELs. Here this is a post from Kamin:

Ok, I have noticed ALOT of people recently asking about why their vtec isn't working. I'm just going to do some of the basic steps in checking to see why the **** vtec isn't working &lt;IMG NAME="icon" SRC="http://images.zeroforum.com/smile/emsmile.gif" BORDER="0"&gt;.
1) Oil level, its gotta be FULL. I'm talking at the upper mark on the dipstick.

2) Solenoid, Ok this is a 2 parter. A) take a wire (any wire) disconnect the grey plug on the vtec solenoid and touch the wire to the pos. battery terminal and the solenoid side of the grey 1 pin connector. there should be an audible click from the solenoid. B) If A checks out, remove the solenoid and clean the filter screen. (self explanatory)

3) Speed, the car must be going over 10 mph so the spedo must be working. that means the VSS has to be working. vtec is temperamental isn't it? &lt;IMG NAME="icon" SRC="http://images.zeroforum.com/smile/emwink.gif" BORDER="0"&gt;

4) more oil, check the oil pan. if its dented POUND IT OUT!. this is why mine wasn't working. the pan was dented in far enough to hit the oil pickup for the pump to cause low pressure situation in the head, no pressure no vtec.

5) ECU Swap out to another ECU that you KNOW vtec works on.

6) Car must be at I belive its 80 degrees or higher so let car get to a normal operating temprature.

7) If none of the above work, you might want to pull the solenoid off the head, remove the solenoid filter and verify the piston moves freely.

Thats a basic troubleshoot for it. if i missed anything or got anything wrong just reply and ill change the info.
If you go through all this and it still doesn't work its oil pressure (the pump) or wiring related. so check all the wires for vtec.
Thats it i hope it helps some people.
Joe

END PASTE

 

cool, i'll try that.. anyone else have any ideas?

 

anyone else?

 

Its a bad ECU sell it to me!! lol

Nah seriously its not working because your wiring for vtec is wrong. Check to make sure your solenoid is wired up correctly, especially if its not grounded..