97 civic exhaust problem

zandrewe

New Member
5+ Year Member
#1
So i went to autozone because my check engine light went on and they said its either
bad cat, misfire or vaccum leak... any body has this same kind of problem?
 

XpL0d3r

I had a Civic once.
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#2
My guess is you either have a bad cat, a cylinder misfire, or a vacuum leak?
 


zandrewe

New Member
5+ Year Member
#3
i don't know much about this stuff
but i went to check if i had an exhaust leak and it was fine,
whenever i drive and i let go off the gas pedal it has sounds like an exhaust leak but its come from the engine,
could it be the belts?
how do i tell if i have a misfire (would changing spark plugs help?)
and how do i detect vacuum leaks?
 

B18cbubble

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#4
what is the check engine light (CEL) code number? should be something like P0304...or something like that for example. are you obd2 or obd1?

this is for obd2 http://www.troublecodes.net/honda/hondaobd2.shtml

if its a vacuum leak, you will have to just look for it and listen. you might throw a code for it.
you wont throw a CEL for belts, but that could be the noise. good luck!!
 


96EXCIVIC

Registered a*****e
5+ Year Member
#5
if u have a misfire get new spark plug wires or spark plugs
i had a misfire n new wires helped
but make sure its not something else first cuz it would suck to pay for something u dont need lol
 

Jersey8

B20: Detroit Muscle!
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#7
P0420. ive had that before
catalyst efficiency below threshold.
its either your rear 02 sensor is shot, or your catalytic converter is shot. if you bring it to a shop they can test the o2 sensor to see if its working properly and then from there will be able to find out which is the problem
 

zb12691

Ebuilt Ricer
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#8
i think those are three different problems. like there would be a different code for each problem. a working cat should be if im not mistaken about 200 degrees hotter after it than before. thats what ive heard. did they tell you a dtc number?
 

zb12691

Ebuilt Ricer
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#9
my bad i didnt read it all, 420 the o2 sensors go bad on those. i work at a dealership and we replase a lot because of that, but than again we do a lot of cats to
 

zandrewe

New Member
5+ Year Member
#10
well i'm not really really sure if its 420 but
the guys from autozone said that its throwing off codes sumthin about the catalytic converter,
where can i get another catalytic converter for cheap? or another 02 sensor?
 

zandrewe

New Member
5+ Year Member
#11
well i'm not really really sure if its 420 but
the guys from autozone said that its throwing off codes sumthin about the catalytic converter,
where can i get another catalytic converter for cheap? or another 02 sensor?
 

zandrewe

New Member
5+ Year Member
#12
well i'm not really really sure if its 420 but
the guys from autozone said that its throwing off codes sumthin about the catalytic converter,
where can i get another catalytic converter for cheap? or another 02 sensor?
 

96EXCIVIC

Registered a*****e
5+ Year Member
#16
but its 90 dollars my mechanic said it might be around 70 80 bucks n then i get there n it was 90 n i was like damn it lol
 

zandrewe

New Member
5+ Year Member
#17
yea i heard ob2 02 sensors are more expensive rite?
because obd1 only like 40 or 30 bucks or mabe less rite?
but i''m gonna change spark plugs and wires hopefully this weekend and i'll let you guys kno wat happens
 

96EXCIVIC

Registered a*****e
5+ Year Member
#18
if u get spark plugs get the iridium ones they cost more but they also last longer n they perform better as well
i bought denso iridium ones n u can tell not much but u can tell lol
 




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