alright, I have a 91 CRX with a d15, with an intake and k&n filter, and a straight pipe going from head to halfway back (no cat or muffler, pipe half length, she's loud) This thing has less restriction than I can Imagine, but its running a little lean now. Ever since I did that, if I run it, turn it off for a minute, and then try to turn it back on it wont start for a minute or two(which sucks for a pizza guy). It'll just sit there and crank like crazy. The starter and battery were both tested and they are fine. I dont want to spend the $ on an AFC, but my buddy told me that if I disconect the oil temp sensor, it'll run a little richer. Is that trueand if so, where's that sensor. If not, what can I do?

 

its in the back of your block above the oil filter

 

Do not disconnect this. It will do nothing positive for you other than throw a cel.
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oil temp has no affect on a/f ratio's. ignition timing and fuel pressure also affect it.

 

hey I don't know what you guys are smokin, I found it on the left side of my block. It richened it up just enough to fix the starting problem, thanks for the effort though

 

I didnt think a 4g had an oil TEMP sensor?

 

Hehe, you sure about that buddy?
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sounds like a coolant sensor,that would make it richer ,thinking the cars cold and give a bit of extra fuel .
not oil sensor on the side of any honda motor that i no.


p.s how much oil do u put in that big square thing that looks like a thin intecooler

If where smashed than whats your excuse?

 

Okay now what did you do? my car has the same problem, and its irritating.

 

i've had two different things cause that. one was the main relay needed some connections resoldered, the other was the cap and rotor was screwed up. the button that touches the coil was burned off.