Car problem help :(

[ZERO]

The normal solution to this problem is to check/replace: oil change,air filter,pcv valve,plugs,wires,distributor cap and rotor,bottle of injector cleaner,fuel filter,check fluids

Yea I have done almost everything on that list, actually every single thing except pcv valve, whats annoying is no one knows, they are all clueless. I am not using low quality fuel, I was told water in the fuel, or lower octane, I have been putting nothing but premo in it for the past few weeks. The only thing that makes less sense for it to be the computer is the fact that it will not do it until the engine warms up. I take that back it may still be doing it, but its no where near noticeable. It will not backfire unless I just jam the throttle down when its misfirng, then about 10 seconds later it will backfire. It does do it in other gears, but because the car is accelerating so much in 2nd I feel it alot more there, and when it starts misfiring, it will literally throw me forward in the seat, almost as if I had hit the breaks. -- thats on a bad day. Whatever it is, it is heat related. Once the engine warms up good, say at a few stoplights back to back, it will start doing it, every time. Again thanks for your help guys

Oh and the thread you linked, that guy is talking about reving the engine up sitting, my car will not do it unless it is under load. It revs just fine all the time, even if it just misfired, If i was to hit the clutch in and rev it, it would rev without a problem, its only under load and heat really.

Fuel is too rich combined with a high temperature causes pre detonation. Based off of what you said any of the following can fix your problem(or a combination):

• Adjust cam timing or reprogram computer to the correct timings based off pre detonation.
• Use lower quality fule to prevent pre detonation
• Reduce the compression
• Reduce the internal tempature

Actually if you use a fuel that is to high of quality it will simply not burn correctly and will cause shit to build up in the pistons. It can also cause the problem he is having. Using higher quality fuel will improve MPG and HP but you need to reprogram the engine computer to use it.

If you use a fuel of too low quality you can have start problems and will lose performance. For example my boat on premium will have problems starting from cold. If I put 110 octane mixed with 92 at 50/50 it will work correctly.

[XxMastagunzxX]

Just check the things I said.

[Spasm]

Well It says to use the premo right on the speedometer. So thats what I am using because that is what it says to use. I am taking it to an honda acura specialist wednesday, they charge 70 dollars just to diagnose the problem though, so it is not going to be cheap When my mechanic changed the plugs, he said it looked like the engine was not burning too rich, just because of how the plugs looked.

[Kavinsky]

tell him to check the entire system if it was just this or that it would have been fixed by now, you cant diagnose it based on one part.

Maybe its doing the opposite, too much air and too little fuel.

[Spasm]

Not exactly sure what the mechanic told me on the phone, but they found like 3 problems, something to do with an O2 sensor that someone put in wrong. She told me that a o-ring was leaking oil onto this O2 sensor and was messing it up. I believe this is what she said, and there is something else, and I cannot remember what it is. Something to do with the timing belt. I dunno but I'm looking at 350 right now without the timing belt problem fixed.

[loka]

Not exactly sure what the mechanic told me on the phone, but they found like 3 problems, something to do with an O2 sensor that someone put in wrong. She told me that a o-ring was leaking oil onto this O2 sensor and was messing it up. I believe this is what she said, and there is something else, and I cannot remember what it is. Something to do with the timing belt. I dunno but I'm looking at 350 right now without the timing belt problem fixed.

Ac's and Honda's seem to have this problem frequently (with the o-rings leaking). As for the timing belt, it probably slipped or was worn out. Despite the 140k mileage indicates it isn't time to change it, problems will always arise and 99% of my engine issues that I had with my old Integra was always the timing belt or o-ring. This is probably why your car was hesitating and not wanting to REV up correctly.

BTW I noticed your using premo on an LS? I had a GS-R and that used premo, but an old friend of mine was using regular on her LS...

[Spasm]

Ac's and Honda's seem to have this problem frequently (with the o-rings leaking). As for the timing belt, it probably slipped or was worn out. Despite the 140k mileage indicates it isn't time to change it, problems will always arise and 99% of my engine issues that I had with my old Integra was always the timing belt or o-ring. This is probably why your car was hesitating and not wanting to REV up correctly.

BTW I noticed your using premo on an LS? I had a GS-R and that used premo, but an old friend of mine was using regular on her LS...

They said the timing belt had nothing to do with the misfirng, I called them back and got more details. Whats happening is someone wired in the 02 sensor manually. The plug was missing. It was spliced in using electrical tape. So whats happening is my engine is warming up and when it gets hot, it leaks out the o-ring onto the wiring of the O2 sensor. So the O2 sensor is causing crazy fuel to air combination that in turn is causing the problem. They told me that the timing belt needs changed but it was not causing the problem, and that I could get it fixed there or later. I will prob get my bro to do it because this place charges so much money. My LS def says premium unleaded fuel only on the speedometer.

[loka]

They said the timing belt had nothing to do with the misfirng, I called them back and got more details. Whats happening is someone wired in the 02 sensor manually. The plug was missing. It was spliced in using electrical tape. So whats happening is my engine is warming up and when it gets hot, it leaks out the o-ring onto the wiring of the O2 sensor. So the O2 sensor is causing crazy fuel to air combination that in turn is causing the problem. They told me that the timing belt needs changed but it was not causing the problem, and that I could get it fixed there or later. I will prob get my bro to do it because this place charges so much money. My LS def says premium unleaded fuel only on the speedometer.

Honda has this habit in telling you to change the timing belt 20ks earlier.

[XxMastagunzxX]

Yeah but if your timing belt breaks and your motor happens to be an interference motor then you can fuck it up bad.

They said the timing belt had nothing to do with the misfirng, I called them back and got more details. Whats happening is someone wired in the 02 sensor manually. The plug was missing. It was spliced in using electrical tape. So whats happening is my engine is warming up and when it gets hot, it leaks out the o-ring onto the wiring of the O2 sensor. So the O2 sensor is causing crazy fuel to air combination that in turn is causing the problem. They told me that the timing belt needs changed but it was not causing the problem, and that I could get it fixed there or later. I will prob get my bro to do it because this place charges so much money. My LS def says premium unleaded fuel only on the speedometer.

Your catalytic converter could be stopped up. It could be the crankshaft position sensor. See if you can find a used one. Maybe an o2 sensor problem? Also check your ignition coil and Ignition control module.

I win.

[Spasm]

Yeah but if your timing belt breaks and your motor happens to be an interference motor then you can fuck it up bad.









I win.

I know about the belt thing, but they charge too much to do it, I just needed them for their dianostic ability really, me and my bro can do a timing belt and he won't charge me much at all, if anything. Just notcied something wierd, LS models are supposed to redline at 6800 rpms and my in dash speedometer redlines at 8k rpm, makes me wonder if someone changed the speedometer to the gsr model