help with codes
- mitmaks
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Re: help with codes
what was the problem with sensors?
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Re: help with codes
they threw codes and didnt work properly. while i dont believe in paying $300 a sensor at the dealership, i do highly recommend buying oem for o2 sensors. denso is the oem manufacturer for mazda. you can buy there oem sensors for like $60 i believe, or there universals which i have and highly recommend for about $30. check denso's webpage for the part numbers you want.
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Re: help with codes
I was reading repair manual and it says to check water thermosensor and ECU, doesn't even mention O2 sensors.
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Re: help with codes
you have codes 17 and 24 which are for o2 sensors. when mine were bad i was getting misfiring at lower rpm and higher loads. have you isolated what cylinder is misfiring? is it random like once or twice while accelerating or is it more constant where it will happen while its idling?
your not giving us much information to go off of so we cant be very helpful...
did you do a fuel volume test? or a max pressure test? just checking if the pump can make pressure isnt the whole story. pumps can fail and still make adequate pressure but cant supply enough volume.
coolant temp sensor shouldnt affect idle like that, but you can try and disconnect it and see if it gets better.
your not giving us much information to go off of so we cant be very helpful...
did you do a fuel volume test? or a max pressure test? just checking if the pump can make pressure isnt the whole story. pumps can fail and still make adequate pressure but cant supply enough volume.
coolant temp sensor shouldnt affect idle like that, but you can try and disconnect it and see if it gets better.
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Re: help with codes
it runs great at idle. It's when I'm driving it it seems like its lacking power or it stumbles. I checked and every cylinder is getting spark, also fuel psi is where it should be.
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Magnum s/s lines, strut bars, carbon fiber bezel, indiglow gauge, Sony Xplod, inverted c/f hood, SRD lower tie bar '93 GS SE '95 Cobra SVT #2722 '68 Charger R/T 440
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Re: help with codes
Where is the rear O2 sensor plugged into? I tried tracing it laying underneath the car but can't see where it goes.
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Re: help with codes
i *believe* its on the same line as the egr plugs?
btw bad o2s will lead to lack of power, bad fuel consumption and poor performance. they wont however affect idle, starting or cause any weird problems. i honestly believe your problem is your o2's. theres no point in testing other things until you replace them. your car is telling you they are bad, but you dont want to listen?
btw bad o2s will lead to lack of power, bad fuel consumption and poor performance. they wont however affect idle, starting or cause any weird problems. i honestly believe your problem is your o2's. theres no point in testing other things until you replace them. your car is telling you they are bad, but you dont want to listen?
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Re: help with codes
replaced o2 sensors, still same issue
Magnum s/s lines, strut bars, carbon fiber bezel, indiglow gauge, Sony Xplod, inverted c/f hood, SRD lower tie bar '93 GS SE '95 Cobra SVT #2722 '68 Charger R/T 440
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Re: help with codes
Any ideas? I'll try another set of fuel rails with injectors
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Re: help with codes
Thank god for your post.mitmaks wrote:it runs great at idle. It's when I'm driving it it seems like its lacking power or it stumbles. I checked and every cylinder is getting spark, also fuel psi is where it should be.
I just realized why my car isnt turning on and why I am not getting fuel.
I disconnected the Fuel System relay thinking it was the automatic tranny computer.
2008 Mazda 3
1993 MX3 GS
KLZE, Fidanza flywheel, KL31 CAMs, South Bend Stage I Clutch, Pacesetter STS, SS AutoChromes, Magnaflow muffler, 2.25' Exhaust, CAI, Blaster Coil HEI, KLDE Valvetrain, 5 Speed Swap
1993 MX3 GS
KLZE, Fidanza flywheel, KL31 CAMs, South Bend Stage I Clutch, Pacesetter STS, SS AutoChromes, Magnaflow muffler, 2.25' Exhaust, CAI, Blaster Coil HEI, KLDE Valvetrain, 5 Speed Swap
- mitmaks
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Re: help with codes
So I've replaced disty cap and rotor and it doesn't seem to stumble anymore. It still hesitates a bit on acceleration until I reach ~2K rpm. Going to replace fuel filter this weekend.
Magnum s/s lines, strut bars, carbon fiber bezel, indiglow gauge, Sony Xplod, inverted c/f hood, SRD lower tie bar '93 GS SE '95 Cobra SVT #2722 '68 Charger R/T 440
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Re: help with codes
how old are the plugs and cables?
- mitmaks
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Re: help with codes
Brand new ~less than 2K miles.
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- mitmaks
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Re: help with codes
So I've been driving it just fine. It's just weird that after all this hassle it was just a simple disty cap/rotor. I guess next time I'll just start out with small inexpensive cars. Never trust CEL lights, usually problem lies somewhere else.
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