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I have a 99 with coils I took out of a 97 a year ago that were replaced 20k miles before according to the service booklet.
Over the past CPL days I noticed the CEL blinking sometimes. I haven't been driving the car too much since I recently changed valve cover gaskets, put on nwp spacers, switched the Bosch plugs to OEM platinum ngks, and replaced all 6 fuel injectors with some Chinese injectors which reportedly work fine. I also did full exhaust including headers and y pipe and there's a massive leak where the rear manifold meets the Y making my car a pickup truck which I'm taking in to be properly fixed tomorrow.
i know cool packs are usually the culprit but I just wanted to get some input and also I've been reading Mitsubishi coils are the best? Wheres the best place to buy a set of 6 coils if none of the above could be contributing
I have a all 6 hanshin oem ignition coils that were taken off a 1995 nissan maxima. The 95 maxima ignition coils were good and had no issues, it was the 97-99 coils apparently that werent sealed good. If you want I can sell them to you? But before you think you need coils, you should ony use oem injectors and not the chinese knock off ones. You should of instead just bought the pintle cap kit and repaired the original ones.
CEL blinking = severe misfire. Do not drive the Max until you have this figured out.
Yes listen to what The Wizard said. Also I once had the blinking CEL light while driving on the highway and for me it was a bad Crankshaft Position Sensor the one that is on the transmission. That sensor tells the ecu which pistons to fire in what sequence and if it goes bad you will have misfiring. Look at that sensor first, and only use an oem one. Autozone sells an oem one for 89.00 dollars and the dealer sells it for 100.00. Just go to a junkyard and see if you can find one for real cheap to see if that is your problem.
Get a code reader if you don't already have one. It will tell you which cylinder(s) is/are misfiring, if any. For example, P0302 means cylinder 2 is misfiring. In that case, you can clear the codes and switch coils (in this example, switch coil #2 with coil #4).
If the misfire switches to the new cylinder (you'd get P0304 instead of P0302), it means the coil is bad. If the problem remains on the same cylinder, you know it's not a bad coil.
The Chinese injectors could be no good, as well. Only buy brand new Bosch, Beck/Arnley, or Hitachi injectors.
For the coils, Hitachi and Denso are the best. They are the actual OE coils reboxed. Rock Auto has them at a good price.
The exhaust leak could also cause your CEL problems, since the leak is before the cat and oxygen sensors.
What are nwp spacers?
Last edited by maximaxi; Apr 10, 2017 at 11:27 AM.
Got the blinking cel indicating misfire, read the code the other day and it's cylinder 4 (front middle).
EDIT: My new prime suspect, lower intake manifold stud I snapped a few weeks ago and tried using rtv as a temp fix. Would a hardware store like lowes have this?
-Swapped several used coils and was still getting the blinking cel so I bought a new duralast from AutoZone earlier and I saw the light again on my way to Lowe's.
-Havent driven car much since replacing injectors with cheap eBay's that supposedly work good and OEM platinum ngk plugs and I just noticed the occasional blinking about a week after
-currently have a big leak on my front header/y pipe flange which I'm working on, idk if the engine vibration from that could contribute to a misfire
Last edited by Violator; Apr 12, 2017 at 06:51 PM.
Got the blinking cel indicating misfire, read the code the other day and it's cylinder 4 (front middle).
-Swapped several used coils and was still getting the blinking cel so I bought a new duralast from AutoZone earlier and I saw the light again on my way to Lowe's.
-Havent driven car much since replacing injectors with cheap eBay's that supposedly work good and OEM platinum ngk plugs and I just noticed the occasional blinking about a week after
-currently have a big leak on my front header/y pipe flange which I'm working on, idk if the engine vibration from that could contribute to a misfire
Since this is an easy to reach "left bank" cylinder that is misfiring, and you just replaced the injectors, I would swap the injector with cylinder 2 or 6, just to rule it out.
Since this is an easy to reach "left bank" cylinder that is misfiring, and you just replaced the injectors, I would swap the injector with cylinder 2 or 6, just to rule it out.
Threads merged. Please keep all your misfire questions in one thread. Thank you.
sorry, for some reason I thought I held off on posting the first one
Anyways I'm pretty sure I found the cause, I snapped one of the front lower intake manifold studs with a bad torque wrench and had forgotten about it. It's the one left of cylinder 4s injector. I assume a hardware store would have this? I'll get a ride later on today
