Ive done everything i can think of, checked cam and ingition timing, dizzy, changed plugs and wires, cleaned out EGR, injector cleaner and the car is still running like total ****.

sometimes it will start and run rough for about 15 sec then it will smooth out and run ok. It will backfire and sputter when you take off from lights and will again smooth out once you start moving. after the car runs for a while the cat turns red and it back fires. WHAT COULD IT BE

I looked at the computer and it blinks 5 times which is a map sensor, well im not entirely sure where that is on this car its alot different than the integra.

someone please tell me where it is....89 SI
please stick with me i need this fixed asap, its my daily

 

im not sure where your map is but when the cat gets red like that usually means that its clogged. does the car have a really bad smell to it

 

ya, but that wouldnt cause it to run this bad would it?

 

ya it would run pretty bad with a clogged cat.

p.s. i just started thinking, correct me if im wrong on this, but with a clogged cat wouldnt that change the manifold pressure cuasing it to throw a map sensor code?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nonvteclude &raquo;</TD></TR><TR><TD CLASS="quote">ya it would run pretty bad with a clogged cat.

p.s. i just started thinking, correct me if im wrong on this, but with a clogged cat wouldnt that change the manifold pressure cuasing it to throw a map sensor code?</TD></TR></TABLE>

I dont know if it would throw a map code, but a clogged cat does cause the car to run like crap. I had a clogged cat on another car and it idled terribly and had no power. I changed out a few other items trying to fix it, but nothing worked. When I changed the cat there was an instant differance.

 

well mabye ill have to give that a shot

does anyone know for sure if that would cause a MAP code?

i forgot to add that the exhaust ends and the cat if that means anything the rest of it fell off,i bought it like that

 

change the cat, if the engine can't pump out the spent exhaust, then it won't create a vacuum in the manifold. Some of the exhasut is probably revertin ginto the intake manifold and causing a backfire as well.

 

is that why it runs so shitty at idle is because it cant pump it out, and why it runs better at higher rpm?

arent cats pretty pricey to replace?

 

?
up before sleep

 

naw there not too expensive.you can get a direct bolt on magnaflow for your car for $91 at http://www.horsepowerfreaks.co...t_Fit

 

how about your ignition coil? has that been replaced? with a bad one of those it'll spit and backfire like crazy with any load on it.

 

i think the coil on these is in the dizzy though isnt it, so i would have to replace the whole thing

 

or would it be the box that the one spark plug wire is hooked to the goes to the dizzy

 

correctemundo. haha yes its the wire that comes from the distributor. say that has a short to it or its just plain bad, the car will run awful, or hardly at all.

 

Maybe this is what you're looking for...

 

hey thanks man that helps out a ton, but i do not remeber seeing that map sensor on the wall, ill go check

where is that info from?

 

ok i just went out and looked and there is no map sensor there on my car

it has the box with all the hoses coming out of it though on the passenger side, can you get a pick of that maybe.

and i changed out the wire that goes to the ignitor unit so maybe it sould just be the ignitor. can someone please find me trouble shooting info on the ignitor, i dont have a helms yet sorry.

thanks alot

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prelude_h22vtec &raquo;</TD></TR><TR><TD CLASS="quote">correctemundo. haha yes its the wire that comes from the distributor. say that has a short to it or its just plain bad, the car will run awful, or hardly at all.</TD></TR></TABLE>

will it still run like crap under a load as well?

 

If you want more info, just go tho http://www.hondahookup.com. register yourself, go to the manuals section and you can download your manual with all the info

 

I talked to a technician today and he said some of these hondas have the map sensor in the computer? I searched all over shop key today and could not find a single thing on the map sensor except how to trouble shoot it, it did not tell me where it was.

oh ya i looked on hondahookup and i signed up but they have not sent me email yet for some reason

 

yo...to check the cat isssue....take your cat off and bash it out...aka gut it...then reinstall and see if it runs better...if it does...then change the cat or love your extra 2 hp...if it doesnt work then reinstall love your extra 2hp and report back to us...

 

the map sensor is in the big black box right by the throttle body with all the vacuum lines going to it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CGags13 &raquo;</TD></TR><TR><TD CLASS="quote">yo...to check the cat isssue....take your cat off and bash it out...aka gut it...then reinstall and see if it runs better...if it does...then change the cat or love your extra 2 hp...if it doesnt work then reinstall love your extra 2hp and report back to us...</TD></TR></TABLE>

did that it did not work

 

You said you used injector cleaner, but have you tried replacing the injector(s)?
Could be fuel pump / fuel delivery issue? Has the filter been replaced? How about the charcoal canister.
and pressure regulator?
Timing been checked?
Also, since it's all vacuum tubes, could be a leak. Get a rubber hose and stick 1 end in your ear and use the other end to follow the hoses and listen for a sucking sound.

Don't forget about the O2 sensor. Think you have 2, one on the exhaust manifold ( a biscuit eater to get to) and one on the exhaust system before the Cat
When you start the car, what exactly does it do. As soon as the key is backed off, does it idle for a few secs, then start to idle poorly? Or does it immediately start off bad?
That year introduced a idle controller in addition to the fast idle controller, so what it does when you start it makes a difference. Also, when driving 1 idle controller would be in use as opposed to stopped in traffic.
Does it work better after warmed up?
How does punching it from idle work?

Lot's of things to look at, go from cheapest/easiest to fix to more expensive.
Oh, one last thing. ECU. and hope it's not that.

ALT

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmcivicferio &raquo;</TD></TR><TR><TD CLASS="quote">the map sensor is in the big black box right by the throttle body with all the vacuum lines going to it
</TD></TR></TABLE>I agree,The map sensor is in the black box on the passenger side firewall.Most likely you dont have the vac line hooked up to the manifold or the vac line has a hole in it.