Idle issues
evol911
familEE
Well, I have a random IACV problem. Every now and again I get the fluctuating idle when the car is warm so I have to unplug the IACV, reset the ecu, so on and so on.
But I'm having another completely seperate problem and for the life of me I can't figure it out. First, my car idled fine before the engine swap. I can't find any vacuum leaks, TB gasket and IM gasket were replaced. Only problem is the finnicky IACV. My question: Would the IACV make the engine drop down low then back up to the set(stock idle) RPM after letting off the gas? If I'm driving down the road and I come to a stop, I clutch and let off the gas, when I let off the gas the idle drops down below 500 then normalizes at the set idle(roughly 800-900). Sometimes it can bob below 500 up to 1000 back down to below 500 then finally even out. This will also happen if I rev the car. Its almost like its going to die on its way back down the RPM's
I'm sure it has to do with the IACV, haven't tested it with my Ohm meter so maybe I should do that. Didn't know if there were some other things I was missing to check out.
But I'm having another completely seperate problem and for the life of me I can't figure it out. First, my car idled fine before the engine swap. I can't find any vacuum leaks, TB gasket and IM gasket were replaced. Only problem is the finnicky IACV. My question: Would the IACV make the engine drop down low then back up to the set(stock idle) RPM after letting off the gas? If I'm driving down the road and I come to a stop, I clutch and let off the gas, when I let off the gas the idle drops down below 500 then normalizes at the set idle(roughly 800-900). Sometimes it can bob below 500 up to 1000 back down to below 500 then finally even out. This will also happen if I rev the car. Its almost like its going to die on its way back down the RPM's
I'm sure it has to do with the IACV, haven't tested it with my Ohm meter so maybe I should do that. Didn't know if there were some other things I was missing to check out.
Comments
on a side note, i ended up with a unique manifold- it had an extra nipple for coolant flow, didnt plug anywhere and other ones i saw online didnt have it. so i just had to block it off :roll:
http://www.honda-tech.com/showthread.php?t=2153910
#12 FITV ********* #13 EACV(IACV)
Solenoid on the left = FITV ********* 2 holes on the right = IACV(EACV) holes
Please notice this is my old PM6 IM not the PM7
My DOHC ZC doesn't have a FITV on th IM nor did it have one on the TB. And most of the D-series motors I have seen didn't a FITV, not to say that there is no such thing.
Now that I have made myself clear on the problem I'm having, has anyone had this problem of the idle just falling off after letting off the gas. I suspect its a faulty IACV seeing how I can cover the IACV hole in the TB and the car dies meaning no vacuum leaks at the least. Just thought maybe I was missing something adn it never hurts to ask questions.