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Discussion Starter #1
( this is my origonal post, I am still having problems, please goto last post for additional info on problem.)

I have a 99 civic Ex W/ 1.6 Sohc Vtec motor, with 56,000 miles on the car. So far i have replaced or changed, over the last 4 months.
Fuel Filter, Cap, Rotor,Plugs,plug wires, Spark ignitor, O2 sensor ( after cat). all toll between labor and parts and towing have spent close to 500 or more. the problem I am having is it misses, backfires and doesnt have alot of power. I changed all the main things ( fuel filter, plugs, wires ) 4 months ago and nothing , then check engine light came on , and it really ran bad. so I made a appointment at the honda dealer ( 90 miles away) on the way there it broke down on me had to have it towed. they changed the spark ignitor , it ran fine till about 25 miles from the dealer and they were already closed by then. so I had a friend check it over and he found the cat was plugged. he gutted it out and it ran fine for about 2 months then it started running like crap again. then I changed the O2 sensor had the codes cleared in the computer ( which when we changed it , it tripped the Knock sensor code ) we cleared that and it ran fine for about 30 miles. check engine light came on again and it ran crappy again, my friend cleared the code yesterday , it still ran kinda crappy but the light stayed off till this morning. both times that the check light came on Friday and yesterday,, it was fine till I turned the cruise control on. then like 5 seconds later that light came on. we have tried everything we can think of and even the honda dealer wont touch it cuz of my intake and exhaust ( which Ive had for over a yr). they told me to goto whoever put them on which i did myself, they dont like working on cars with mods done. If anyone has any ideas or thoughts Id appreciate it .. I tried to be as thorugh as possible with all the problems , if not or I left anything out , just ask me about it i guess,, thanks( this is my origonal post, I am still having problems, please goto last post for additional info on problem.)
 

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what I need to know is what codes are you throwing now? I need to know this so I can come up with a hypothesis. (Hopefully you know how to find out what you codes your ecu is throwing at you. If not, hit me up, I will help you as much as I can)
 

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Discussion Starter #3
no im not sure how to do that , but I have an idea I can get them off my friends analyzer machine right.. i know when he puts the computer thing on there that it tells whats wrong and the codes it reads from the computer in the car.. if thats what your talken about Im sure I can get them or at least the one it has right now cuz Im gonna stop at his garage tommorrow after work again , we can hook it up and see. is there a certain # or something that ya need to know or just the name of the code or something?
 

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hit me up via email and I also added you with the yahoo instant messenger. my email is [email protected]
 

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oh I forgot to say this, you do not need the analyzer machine. You can do it yourself at home with a copper wire. Really easy. I will go into more detail once I get in touch with you
 

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sounds kinda like the issue i'm having. check engine light on, first thought it was the hole in my exhaust. Got that fixed, worked great for awhile, then came on again. Car idles very low at times, and sometimes stalls. Honda says it's running lean which I know is very bad for the engine. Ran some fuel system treatment through, and changed the fuel filter. Still idling low, and I'm just waiting for the light to come back on. I need to check my plugs and pull the code once the light comes back on.
 

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Discussion Starter #7
well I put a high flow cat and 2 1/4 inch pipe on the car, engine light is off but the car is still backfiring and on occasion it it lacks power or surges when I accelerate. usally only in 2nd and 3rd gear. 5th gear it lacks alot of power and when i let out of the gas it backfires not loud but it does.
I have put almost a 1,000 into it since may and still cant seem to get it too work right , Ive got someone who specailizes in imports to look at it but he doesnt work with higher performance cars much so he is stumped.. read my above post for what has been done to it before and if anyone has any ideas let me know thanks..
 

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My honda dealership is fuqed up. The check engine light came on and they told me they didnt know what was wrong. Now the car sucks gas like there is no tomorrow. Driving about 200 miles and im on fumes, thats if i drive slow, if i race it about 100 - 150 mpg. I drive a 00 EX. Only 35,000 miles. THe dealership said they dont know whats wrong and reset the computer. Im waiting for this weekend to take my car to another dealership about an hour away to see if they can possibly fix the problem. Any ideas would be greatly appreciated.
 

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Discussion Starter #9
last thursday , I took it to a import speacialist whom I had do the exhaust , he spent 2 hours doing diagnostic work and found a crack in the distributor cap.. changed the cap and rotor, which cost me 167.00 and I drove it home and Im still having problems with it. it backfires really bad and 5th gear has no power, sometimes 1st and 2nd gear shake when i take off and it acts like its going to stall.. also I noticed I have a bad build up of carbon on the muffalr, so Im sure its either running rich or lean , not sure which or why. ( read my first post to see what I changed) Ive spent 1200 in parts labor and towing now. if anyone has any ideas on what to check or try please tell me.. also if there is anyone in Pennslyvania here, does anyone know of any good import mechanics that deal with higher performance hondas. cuz I live in rural northcentral pa , and no one here knows anything about them. \
thanks
 

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I was having that problem right after i put my turbo on, and spent days and days troubleshooting the turbo, but then i found a crack in the diaphram of my fuel pressure regulator. Try replacing that. If that's the case, it's making your car run waaaay to rich at idle and as a matter of fact all the time, cuz the vacuum of the manifold is sucking in gas thru the crack in the fpr. Just a hunch, give it a try. L8z
 

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have you checked the timing at the dist. how about checking to make sure the cam and crank are in time with each other. the timing belt may have sliped a notch or two. this could acount for the backfire. the plug could be firing before the intake valve is completly closed. the belt in combination with the dist. being off could account for the lack of power and the running rich as the spark would not be happening at the correct time to burn the fuel charge completly. hope this helps.
 

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TCivicEX said:
what I need to know is what codes are you throwing now? I need to know this so I can come up with a hypothesis. (Hopefully you know how to find out what you codes your ecu is throwing at you. If not, hit me up, I will help you as much as I can)
damn nice car looks just like mine cept i have GSR rims.....where you from?
 
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