Is this my ignition coils going bad?
#1
Is this my ignition coils going bad?
Every once in awhile, completely intermittant, my car will jerk at 3500 RPMs and up, like the fuel is cutting out. It also has a rought idle. But then another day the car will drive completely normally. Also when the car jerks, the check engine light blinks around 30 times and then stops and doesnt stay on.
I have a 99 so i have a hunch.
I have a 99 so i have a hunch.
#9
Nope. Short of a good oscilliscope, no not really. Resistance tests are POS.
Sometimes, putting the car in reverse while at idle, and the brake on, can reveal a consistenly misfiring coil. Then at that point, you can start unplugging coils and seeing which cylinder is consistently misfiring.
Other than that, wait for the coil pack or fuel injector to completely take a poop on ya.
Sometimes, putting the car in reverse while at idle, and the brake on, can reveal a consistenly misfiring coil. Then at that point, you can start unplugging coils and seeing which cylinder is consistently misfiring.
Other than that, wait for the coil pack or fuel injector to completely take a poop on ya.
#10
Originally Posted by 96_Infiniti_I30
both of em.
Chase-
they are only $58 new. Id rather have peace of mind knowing all are replaced and brand new then only one used one is in there.
#13
I still need to know which coils to get. there are left and right ignition coils. 3 of each? Or does it not matter?
And does installation require resetting the ECU? Or do i just unplug battery, install coils, plug battery in, and im done?
And does installation require resetting the ECU? Or do i just unplug battery, install coils, plug battery in, and im done?
#16
Originally Posted by Mr99Maxima
is there any way to find out which coil is bad?
Gramdacious
#18
Originally Posted by Mr99Maxima
Where can you get them for "around $25 a pop"???
He supplied me with my coils.
#19
Originally Posted by Gramdacious
I haven't contacted him in a while but try Matt at http://by9fd.bay9.hotmail.msn.com/cg...f420dd0e9602f#
He supplied me with my coils.
He supplied me with my coils.
#20
I have a slight shaking problem too. Not to the extent which I get a CEL. But I took it to Midas and the guys looked at it for an hour with me and were absolutely positive the coil packs were fine. They did NOT recommend to change them. They used their diag. computer, it said the KS had a problem. They looked at it, and it looked fine. I called up Car-X, they said coil pack problems are rare on 99's. I called the DEALER from where I bought the car, gave them my VIN, and they said there are no recalls on my car. Sorry, sort of rambling here, but I don't think it's coil packs anymore. It's gotta be something else.
#21
trust me it is the coil packs. they dont know what they are talking about. Coil Pack Problems are the most frequent on 99's. but they go bad no matter what year you have i had a 95 and after about 103,000 miles, i had to replace them. they were orignally Mitsubitshi ones, so i bought them according to my ohm-age. i only replaced which ever ones are bad. the knock sensor is a common problem amung maxima owners. its usually cracked. never listen to what Midas and Car-X say. they dont know. they arent maxima owners. or enthusiasts. its usually just one side of a 1999 maxima that is bad.. so you might only need to buy 3.
if your car moves back and forth while at idle. your coil packs are toast. trust me.
if your car moves back and forth while at idle. your coil packs are toast. trust me.
#22
Originally Posted by Gramdacious
Who told you no? I had the same problem. I also have a '99. Did you pull the codes from your ecu? Mine told me what cylinder was misfiring. It was the number 6 cylinder and only the number 6. No use buying a whole set when only the number 6 (for me) was not combusting properly. My max has burnt thru a few coil replacements but I found a place that sells them fopr around $25/ a pop so I consider it "routine maintenance". Go ahead and buy a whole set if you want to but make sure that more than one coil pack is bad. As far as brands for the coils, I've had both and don't notice a difference. good luck,
Gramdacious
Gramdacious
Killcrap - did you replace them with mitsubishi, or with the other brand? And also, if I bought 3 for the left side, and the problem ended up being on the right side, would I have to get 3 more for the right side, or could I just use the 3 I bought for the left side? I guess I'm asking if they're interchangable. Sorry about the long post, but I'm just trying to find out what's really goin' on. Thanks much in advance.
#23
i replaced them with Mitsubitshi ones. the coil packs are not interchangable. cylidner 1,3,5 need one type of coil, and cylinder 2,4,6 need the other type. the 1,3,5 coils are longer than the 2,4,6 ones.
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