madpipr

surging idle, but smooths out when given throttle. will free rev just fine. havent driven it yet, but want it running right before i do.

car had a d16z6 in it. spun a rod bearing, so i grabbed a cheap b7 block.

never toich anything with the intake manifold or anything like that. just pulled the head off,and put it on the b7 block with a new headgasket.

can ran fine before, no surging idle, just a hell of a knock.

the only thing i can figure is there was an extra water "port" on the water pipe on the back of the b7 block that i capped off and ran the hoses like the z6 had. thats the only difference. the hoses were for the iacv though.

any input is helpful. yes i searched. i havent spent much time looking at the car, just lookong for a good starting point.

HondaPartsHero

Check to make sure your IACV is connected and verify you have the right connector hooked up, wires should be blue/yellow and yellow/black.
https://honda-tech.com/forums/showth...IACV&t=2626908

madpipr

Yeah. I swapped plugs. Surging idle fixed.

Cuts off after running for 3 minutes. Only runs when I give it gas.

Still have code 14 also.

madpipr

Found a ground cable I forgot to hook up.

Now just idles low and cuts off about 50% of time after I give it gas and let off.

Vacuum leak? I don't see anything, but I don't know what else to think.

pityocamptes

propane, unlit,around intake ports will tell you if you have a vac leak...

24TEN

iTrader: (2)

Are you still running the stock camgear?

madpipr

Yes. Stock cam gear. But everything lined up alright. I advanced my distributor a little to help compensate.

Drove it today finally. Runs good once it gets going. Has a slight stutter until about 1800 rpm, then smooths out. Goes in to vtec at like 4500. I'm going to have to make sure it's a stock p28 computer. Bought the car for $350 with the spun rod bearing.

Doesn't die every time I let off the gas, but a couple time it just drops idle too fast and dies. I do have a lightweight fidanza flywheel, but that shouldn't affect it I don't think.

madpipr

Also has a code 1 (o2 sensor). But even with it unplugged, still does the same thjng.

24TEN

iTrader: (2)

As I understand it, you still have to make up the difference between the different block heights. The difference in degrees is something like 4.5degrees I think. Might be the reason you still have the stutter.

madpipr

car runs like a dream when cold.

as soon as it warms up, it wants to die off throttle. runs great while it's moving.

suggestions?