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Name this problem, Thanks for Anyone who helps out

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Name this problem, Thanks for Anyone who helps out

Old 06-14-2005, 02:38 PM
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Default Name this problem, Thanks for Anyone who helps out

Hey guys, i just swapped a b16a into the project crx. Heres a complete break down of my cars history since ive had it. Its a 1988 crx dx. So i have been using my dpfi harness the whole time
Got it in stock form, ran fine, put a zc ran fine, turbo charged the zc ran fine, then i swapped in a b series ls vtec... i was running it off an ls ecu with no vtec well it was breaking in. I eventually hooked up vtec off a b16 chipped ecu. It never really ran right... and one day it finally went poof, it was smoking a bit, but more then that it was really jumpy, like sometimes it would go when u would press the gas and other times it would do nothing... just make a sputtering sound.
So now i have a b16a jdm swap from h motorsonline. The motor doesnt smoke or anything but im having the same exact problem. Ive checked all grounds and all my wiring... it seems to check out. My battery is relocated to the back and is an old optima. The car idles ok and revs fine in neutral or at a standstill. As soon as i start to go the car starts sputtering... pauses for a few seconds and then just takes off... back and forth. Do fuel pumps go half bad? because it seems to do this mainly if i step on it. Map sensor maybe?
So if anyone has run into this problem, your input would be much appreciated.
Thanks
Mike
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Old 06-14-2005, 02:58 PM
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Default Re: Name this problem, Thanks for Anyone who helps out

what is this "b16 chipped ecu"? I'm guessing the fuel and timing values are completely wrong. you can try changing the map sensor... did you try switching the wires on the tps like some people have to when doing the mpfi conversion?
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Old 06-14-2005, 03:02 PM
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No no no, you got me all wrong, sorry if i forgot to mention, the car ran fine with the stock ls ecu. It even ran ok with the b16 ecu. It never fluttered or sputtered. I switched those tps wires a long time ago, the car has run fine many times before, just hasnt run right since that day it started sputtering while i was driving.
Thanks for the try, its a stock b16 pr3 ecu now and stock b16 engine
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Old 06-14-2005, 06:06 PM
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Default Re: Name this problem, Thanks for Anyone who helps out

sounds like your getting to much gas u got a wideband? what does it say when your gettin on it?
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Old 06-14-2005, 06:15 PM
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Nah no wideband, sorry, its a completely stock fuel system... 240 injectors, stock fpr, stock pump, new fuel filter, stock rail.
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Old 06-14-2005, 06:26 PM
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no fuel pumps dont go half bad. Then iono what your problem can be iama keep on thinking what it could be. at first i was thinking maybe one of your injectors arent plugged in all the way cause the car would idle fine but given it gas it would sputter, but u say it revs fine until you actually put a load on it.
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Old 06-14-2005, 08:56 PM
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I'd start testing tps and map values next, make sure you're in factory specs.
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Old 06-14-2005, 11:23 PM
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Thanks guys, im going to replace the map with a spare and the tps.. i will electrically test them first, i believe tps is like .5v at close throttle and 5v at wot, how about map? You know the specs off hand?
thanks
mike
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Old 06-15-2005, 01:12 AM
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Default Re: Name this problem, Thanks for Anyone who helps out

If I had to guess it sounds like a fuel issue, but you said you changed the fuel filter, so I don't know.


When this happened with the ls/vtec and you eventually busted the headgasket, that would go along with fuel too. I know you were ripping it, then the fuel isn't right, heat, kaboom. Thats my theory.
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Old 06-15-2005, 01:16 AM
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That could very well have been what happened, but whats the issue now? This is a bone stock swap with a stock ecu and all stock components?
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