Last post on Jan 11, 2011 at 6:31 AM
You are in the Hyundai Santa Fe
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Hyundai Santa Fe
#11 of 20 Re: Very Weird and Wacky Problem [somedai1]
Oct 12, 2010 (12:00 pm)
The only codes this time was the o2 sensor again, and then this time there was a cylinder 3 misfire.
#12 of 20 Re: Very Weird and Wacky Problem [followme21]
Oct 12, 2010 (12:49 pm)
i guess the bank 2 sensor could be reading too little fuel and telling the computer to send more fuel and cause too much to be in the cylinder causing detonation/misfire... that has to be next step - O2 sensor...
#13 of 20 Re: Very Weird and Wacky Problem [somedai1]
Oct 13, 2010 (6:07 am)
I can try that, but if I had a camera here and could post a pic you would see that the side electrod (ground) is actually pushed up and off to the side of the center electrode. I dont know if pressure from detonantion could cause that..it looks like something pushed it there. Esp when the O2 sensor is $105.00.....
#14 of 20 Re: Very Weird and Wacky Problem [followme21]
Oct 13, 2010 (7:23 am)
I don't think something mechanical like a cylinder hitting it is doing that damage. If it were mechanical it shouldn't happen at alternating cylinders. It is most likely detonation. and the fact that you're not getting any other codes is troubling. most cars don't get driveability problems when O2 sensors go - but Hyundai does according to the dealer. check this too - when you poured the stuff into the cylinder to break up carbon - how long did you let it seep in or soak? did you attempt to start it before installing the plugs to clear the combustion chanber of any remaining fluid? it is also possible that if the engine has so much carbon built up there is debris in the combustion chamber - blow out with compressed air.... lastly - which picture describes your plug -
#15 of 20 Re: Very Weird and Wacky Problem [somedai1]
Oct 13, 2010 (7:33 am)
The second one up from the bottom.. the one that says "electrode is bent and insulator is broken" exactly what mine looks like...."causes being spark plug reach is to long or foregin material in cylinder"... the spark plugs the parts house gave me are "NGK BPR5EY" with a "11" under those numbers.
I let the ATF soak in for about a day or so then yes I cranked the engine over to remove the fluid before installing the plugs. I did not blow out the cylinder with compressed air last time but am going to this time..
#16 of 20 Re: Very Weird and Wacky Problem [followme21]
Oct 13, 2010 (9:15 am)
has this car ever run low on oil or overheated? does the exhaust have white or blue smoke?
#17 of 20 Re: Very Weird and Wacky Problem [somedai1]
Oct 13, 2010 (10:28 am)
Dont know really about running low on oil or overheated or anything, its not mine I am just working on it for a lady friend....I do not notice any smoke coming from the tailpipe except when one of the plugs goes closed... it does have 127,000 miles on it so it is getting up there...
#18 of 20 Re: Very Weird and Wacky Problem [followme21]
Oct 14, 2010 (4:50 am)
i guess process of elimination that is cost effective could work - but timing belt may need to be done if it hasn't already. clean it, crank it, blow it out, crank it an blow again - install plugs an see what happens... O2 sensor costs less than timing belt...
#19 of 20 Miss fire on front 3 on a 2003
Jan 10, 2011 (9:01 pm)
2003 v6 with 105,000 miles running rough at idle. figured it was a misfire & it was on 2, 4, 6 (the back 3) full diagnostic was done at the shop & replaced the wires & plugs. It's still running rough on 1, 3, 5 the hour after the plugs & wires are done. just spent $300 on that service. Any ideas on what would cause this jumping of misfire from side to side?
#20 of 20 Re: Miss fire on front 3 on a 2003 [slewisomaha]
Jan 11, 2011 (6:31 am)
does that car have coil packs or distributor cap + rotor? my 1st guess would be fuel injector problem or cap+rotor issues... misfire due to plugs usually doesn't occur on so many bat once... did you have all plugs changed? what brand of plugs in the car?