My problem is that when driving the motor starts to pop at or above 4000 rpm. It's a 94 accord with a 95 jdm h22a.

 

Someone help, it want rev. No vtec, no second runners, no nothing.

 

did you check your plugs. sounds like its breaking up much like a boosted car would if theres too much gap in the plugs.

 

Bosch platinum 4 plugs, new msd wires, new blaster coil, and new fuel filter, still doing the same thing. Once it gets to 4grand it starts popping, and my tach is all over the place.

 

Are you sure you got everything on the ECU hooked up correctly? I know that on 94 there are two wires that were different from the 95-97s. The EGR and something else I believe.

 

Yes, it's wired correctly. It has ran fine for about two years. I just install a new tranny and clutch about three months ago, and it ran fine for about 1500 miles now it just started this mess.

 

Started out of nowhere huh? Damn, that makes it hard to diagnose. Dunno what to tell ya.

 

I thought it might be a wire or harness lose but I've checked everywhere and every thing looks ok. I've also done a compression test and everything checked out ok. I haven't heard of many people having problems with msd boxes so I doubt if its the problem, but if I have to I will buy another one just to make sure that it is ok.

 

Is there a check engine light, does the motor have many mods, what ecu?

 

check your grounds. make sure they are clean and tight. sure it sounds odd, but bad grounds contribute to a bunch of phantom ghost problems that pop up out of no where. just my $.02

 

It sounds like your hitting the rev limiter and your car is running in safety mode. I know prelude act like that if you try to hit Vtec before the car is warmed up. I dont remember what the fix is, but try searching prelude safety mode or something.

 

ditch the bosch 4 plugs. try a fresh set of NGK coppers. thats a $7 fix that might work. I've heard mixed results on the bosch +4s. that multi-electrode crap is just a gimmick.

check your ICM. Based on what you've already replaced, it's basicly has to be one of those 2 things. I think autozone will check your ICM for you for free, not 100% on that though.

 

ICM or do you mean ecu? It's not throwing any codes, and I've ran bosch plugs in every Honda I've ever owned, so I doubt if thats it. I'm thinking about pulling the head, as crazy as sounds I think it might be the head gasket. If not, I'm at a lost.

 

ICM is Ignition Control Module - aka part of the distributor, this is what it sounds like to me.

 

im pritty sure if your compression test showed up ok that its not your HG... how is your oil pressure? because vtec wont engague if the pressure isnt just right.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jweller &raquo;</TD></TR><TR><TD CLASS="quote">ditch the bosch 4 plugs. try a fresh set of NGK coppers. thats a $7 fix that might work. I've heard mixed results on the bosch +4s. that multi-electrode crap is just a gimmick.

check your ICM. Based on what you've already replaced, it's basicly has to be one of those 2 things. I think autozone will check your ICM for you for free, not 100% on that though.</TD></TR></TABLE>

thank you!!!!! not sure about the check, but it is easy to do with an ohm meter. Bosch sucks . the multi electroieds are worse, because you cant gap them properly

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hammer99ex &raquo;</TD></TR><TR><TD CLASS="quote">did you check your plugs. sounds like its breaking up much like a boosted car would if theres too much gap in the plugs.</TD></TR></TABLE>

there are veary few motors like fords trition v10 that require multi electroied plugs, but that is few far bettwen. NGK/Denso are much better plugs, hell even autolites are alot better then bosch. it seems ever other time when I do a tune up with bosch plugs, I am doing it agian in a month, because of a fouled plug.

 

also check your igniter. minewent out and did the exact same thing.

 

Just getting off work, but I took the msd box off my 88 civic, and swap with the accord one. Going to test drive to see if there's any differrence.

 

P.S. I guess I'll try the igniter and plugs also.

 

Changed ICM, rotor, and cleaned air filter this morning hopeully this is it.

 

Did not work, I'll take of it. Man what was I thinking.

 

Did you check your firing order?

 

Man I'm insulted by that question. Give me something else.

 

i just asked u a ? good lord u dont have to be a ***** about it. an im not the stupid one that puts bosch spark plugs in my motor what a loser.

 

I've never had any problem with bosch plugs, which has absolutely nothing to do with helping me solve my problem. Ok, back to the subject, I swap out hte map sensor and the ICM, still doing the same thing. I'll move on to the injectors now I guess. Hey 96Accordh22, is your firing order correct?