ZC engine ....help :(
 

My ZC swap is not runngin right. I have replaced the timing belt gave it a basic tune up and this is what i got. Stock zc with a intake. It misses(feels like it shuts off actually) right at 2100 like clock work. ABove or below that rpm it runs great. under light throttle however between say 2700-3300 it feels like it is hesitatin and missing, almost like hitting a fuel cut. any sensors....or anythign i could have missed? please help me!

Re:ZC engine ....help :(
 

what car/year/model

what ecu

Re:ZC engine ....help :(
 

1988 crx si i know i need the pg7 ecu but i have been running the stock one for like 12k miles and it has been fine up till now!

Re:ZC engine ....help :(
 

is it throwing any CEL's?

I had the same problem with a B20 swap, and I noticed that if I left the tank under 1/4 full it would do it. Keep more fuel in it, and no problems.....could be a vapor problem, I dont know, but I just keep it around 1/2 tank and im fine.

BTW, this should go into the hybrid/tech section.
ask a mod to move it.

Welcome to HMT.com!

Re:ZC engine ....help :(
 

scaaeg, hmt.com is:
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This is homemadeturbo.com

Don't confuse the newbs! ;)

Re:ZC engine ....help :(
 

???

Re:ZC engine ....help :(
 

Sup byatch!

Re:ZC engine ....help :(
 

So everything was running fine then this started to happen? or did u change something and it started to happen after that?

Re:ZC engine ....help :(
 

everything was fine up till this. AFter this started i changed the fuel filter...no effect.....adjusted the timing....no effect....changed the cap/rotor/wires/plugs...no effect.....then my timing belt blew.....slapped a new one on there...no bent valves....same problem though....I am at a total loss for what could be happening...:( oh i ran two tanks of heavy fuel system cleaner through the car as well...no effect1 :(
I have a new fuel pump, i need to install it though i thought that might be causeing this(what do you think?) it is strange because it is totally RPM dependant!

Re:ZC engine ....help :(
 

Re:ZC engine ....help :(
 

fuel amount also has no bering on it, empty full half quarter all levels are the same1 :(

Re:ZC engine ....help :(
 

hummm.....the fuel level solved my problem.

-- You said you have a new filter, and a new pump to install. I would put that new pump in there, and see what happens with that. It has to be something within your fuel system. It might not play a part in it, but have you checked your TPS or anything like that?

Re:ZC engine ....help :(
 

havent tried any sensors yet maybe i should it has had a cel for a year now.....forgot what the code was but i was told not to worry about it....ill try to fix that ----!

Re:ZC engine ....help :(
 

But maybe now you have more than just one CEL, check this, maybe it'll give you an answer

Re:ZC engine ....help :(
 

my B20 swap is throwing 5 codes. :o
its a ghetto car though

Re:ZC engine ....help :(
 

code 9.......thats the only one i got....it flashed once then paused and then kept flashing 9 times and pausing

Re:ZC engine ....help :(
 

Check the dist plug wires. make sure all is connected.

if it's all connected get a new dist.

Re:ZC engine ....help :(
 

ok so the problem went away fro a day and a half but now it came back at a lower rpm like 1700 give or take. but it is everytime the needle crosses the same point...just dies, above or below runs like a champ! on a side note i just filled up for 1.99 a gallon woo hoo!