Okay first....the setup.....

94 Civic w/ D16z6 and greddy turbo kit (no blue box, instead fmu).

The z6 was just recently swapped in favor of my b7 and now i have this problem. when i drive the car....pretty much at any throttle position once the car hits about 4200 rpms the car starts hesitating and bucking BUT the rpms will still rise slowly. No check engine light but when i jumped the ECU and checked for CELs a CODE 7 (TPS) would come on so i fooled around with the plug on the TPS and checked for CELs again and instead of the code 7 i got a CODE 16 (Fuel Injectors).

So my couple questions....when i jumped the ecu the first time how come it didnt show 7 and 16? It only showed 7 and the second time i tried it only showed 16. When i search for bucking problems a lot of people said that its probably TPS. And my other question.....When CODE 16 shows up what does that mean? Injectors are jacked? Where should i start checking with the injectors?

 

I had a CEL 16 also. In my case, it was a sensor on the cylinder head (B18B1). The two wires were accidentally pulled out of the connector and was touching each other (at the time, I was installing the water thermostat). Check all your connectors. Weird... because that particular sensor has nothing to do with the fuel injectors except for the fact that it <U>shares a common 12V power source</U>. The power source is the "dead-end" plug @ the driver side shock tower.

 

oh okay....i'll check my connectors? any other suggestions or help?

 

anyone have any help for me?

 

sounds like wiring to me, too. You could always check the volts going to the TPS and see if they aren within spec.

 

It does sound like a wiring problem. You can test the TPS, the procedure is in the repair manual. Does it feel like the car hit a wall and slowly falls in RPMs even with wide open throttle?

 

no see it doesnt fall which is why i'm stumped....at appox. 4200 rpms it feels like it hits a wall....and then stutters and bucks but the rpms go upwards. slowly though.....so with every buck (about 1/2 to 1 seconds apart) the rpms will jump up about 200 or so.

 

Hmmm...change the cap/rotor for good measure. The CEL may be one thing and the bogging may be another problem.

 

well cap and rotor are already new.....rotor was changed with motor so has like.....1 mile on it and cap is fairly new as it was purchased with my MSD ignition system.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by d15b7racer &raquo;</TD></TR><TR><TD CLASS="quote">well cap and rotor are already new.....rotor was changed with motor so has like.....1 mile on it and cap is fairly new as it was purchased with my MSD ignition system. </TD></TR></TABLE>

wait- MSD? I bet you dollars to ******* do-nuts that the MSD has a part to play in this whole mess. Every time someone messes with the ignition coil, **** starts to fly. I hate aftermarket ignitions on Honda's....although you need it more than most.

 

A friend of mine had the same problem, he too thought it was a wiring problem but come to find out it was his FMU hooked up wrong.

 

oh crap...now that you mention it......my friend rerouted my fmu for some odd reason....maybe thats what it is. thanks man!! i'll check it out and post results.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1slowhatchie &raquo;</TD></TR><TR><TD CLASS="quote">A friend of mine had the same problem, he too thought it was a wiring problem but come to find out it was his FMU hooked up wrong.</TD></TR></TABLE>

okay so i checked the way my FMU was hooked up....it was changed from before but i dont think it was the problem. The fuel lines were definately correct but the only difference was that the vaccum source was changed from the FPR to a source from behind the intake manifold. Would this cause my problems?

 

Umm...yeah.....



Sorry, had to do it...

 

check for any kind of fuel interfearence fron the tank back even though there should be enough fuel in the rail to go through first then check injectors