Last post on Apr 15, 2013 at 8:56 AM
You are in the Mazda 626
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Mazda 626, Sedan
#1677 of 2544 Re: CEL & surging mazda 626 2 lt 1994 atx [Mr_Shiftright]
Apr 28, 2005 (11:27 am)
Well Mr Shiftright . My Wife just drove the car 145 miles and used 4.96 gallons (18.80 liters )so mileage was 29.32 on the hwy . She told me car seemed weak on the long uphill climbs. Its pretty high there in mountains of Greece and thin air might contribute or maybe she shoulda put in in 2nd because tranny is, and she is also, reluctant to downshift.
Any thoughts on power loss? MAF or O2 ? Aside from CEL off and on, and weakness, all else was fine
#1678 of 2544 Re: CEL & surging mazda 626 2 lt 1994 atx [mazda626atx]
by Mr_Shiftright HOST
Apr 28, 2005 (2:52 pm)
Without codes it's like working in the dark.
#1679 of 2544 Re: CEL & surging mazda 626 2 lt 1994 atx [Mr_Shiftright]
Apr 29, 2005 (3:24 pm)
Mr Shiftright . I got a 159 (MAF) and a 181 (heated O2 sensor) as I mentioned in POST # 1668 before I left Greece. I was not sure I did it right but I have found out from other sites that in fact I did. If its a O2 sensor Mazda says they have 3 of them . I have heard they have one ? If there are 3 how do I figure out which one is bad.
Can a bad MAF also create a bad OS reading. What if I do nothing? Car drives fine aside from long uphill climbs and Mileage was normal. Aside from CEL I wouldnt know anything was wrong
#1680 of 2544 Re: CEL & surging mazda 626 2 lt 1994 atx [mazda626atx]
by Mr_Shiftright HOST
Apr 29, 2005 (4:22 pm)
Well the problem is that the code doesn't mean these items are bad, it only means that these items are unhappy for some reason, which could be caused by something else (nice, huh?) . Maybe will jump in to help you here, he's a working tech, I'm not.
#1681 of 2544 Re: CEL & surging mazda 626 2 lt 1994 atx [Mr_Shiftright]
Apr 29, 2005 (6:39 pm)
Who will jump in to help me ?? Well whomever he is I would love his help, before I go out spending a lot of money on guesswork . I have cleaned tha MAF with a computer sray can and looked at most of the wires. I am mechanical, but by no means a mechanic! Help
Apr 29, 2005 (7:13 pm)
e-mail me and I'll send you his e-mail. I can't post it here because he'll get spam. Or, go to the Technical Questions Forum and look for his posts and click on his name and you'll get his e-mail. Maybe he can help you, I don't know.
good luck with it,
Shifty the Host
#1683 of 2544 2000 626 #1 cylinder misfire
May 03, 2005 (5:05 pm)
Hello Mr. Shiftright, I have a delima with my 2000 626 4 cylinder standard 5-speed. It started to idle badly, and at acceleration especially in gears1&2 it misses bad and doesn't want to go if you give it gas, you have to let off a bit and ease back into it. the code was a #1 cylinder misfire. I changed the spark plugs, wires, coil pack, and used some feul injector cleaner and that fixed it for 2 weeks. Now it's back at it only worse. The check engine light came on again, but it only showed the same code again. Now even at highway speeds it misses and lopes. PLEASE HELP!!!
May 03, 2005 (7:50 pm)
Well I think you'll have to check to see if the injectors are getting pulses (noid light) and then swap out the fuel filters if the injectors seem okay. Might help. A cylinder can misfire for a lot of reasons.
#1685 of 2544 Re: misfire [Mr_Shiftright]
May 04, 2005 (9:05 pm)
So you think that the problem may be more fuel injector related? Also I have replaced 1 fuel filter, is there more than one on this car? Also sorry if this is a dumb question , but what is a noid light?
May 05, 2005 (9:57 am)
It's a device you plug into the injector's electrical connector to see if your fuel injectors are getting a pulse from the computer. No pulse, no squirt, no boom-boom.
Most local auto parts stores sell noid lights.
If you are getting a pulse to that cylinder, you might have to check your fuel rail fuel pressure and see if that's proper. If that's proper, then I guess I'd pull the injector and replace it for that cylinder.
This ALL presumes that you are, in fact, getting a proper and consistent spark to that cylinder that isn't firing.
I dunno, without being there I don't want to tell you to go out and spend money. Just throwing out ideas for you based on what you are telling me.