its been driving me crazy! Every time i go WOT it theres a lag/hesitation and im wondering whats its from. When im jus crusing round 40-50mph and i got WOT theres a big lag(like i let off the pedal) and then it jumps into WOT and seems like theres a loss of power, like it accelerates hard but seems like it should be goin a little bit faster.
any suggestion would really help i hate this!
thanks in advance

 

knock sensor, check codes

 

how do i go about doing that? sorry im new at this. but thanx for the info.

 

ignition coils - check codes

 

ahhh i like but at the same time i dont like what i am hearing

 

i just had this same question a few days ago and BOSS answered it very nicely. ill just copy and paste what he told me:

It is another coil(s) deteriorating. Read this ENTIRE thread http://forums.maxima.org/showthread.php?t=286287&page=3, make sure you read all of it. Like I said before, When a coil is defective, at FIRST, it NEVER triggers a code. That is why people mysteriously drive their Maximas for a long time with these hesitations/micro-second pauses in acceleration or when idle, without knowing the exact cause.

The CEL (or SES light to be exact) will never go on with defective coil, unless the coil is weak enough to cause a SEVERE cylinder misfire. Only then will the ECU throw a "CYLINDER #X MISFIRE" code, after which you know which coil to swap/change/replace.

As an example, when one of my coils was deteriorating, I felt the hesitations and what not for about 4+ months until finally one day I got a code because it misfired so much.

Also, don't think it can't be a coil simply because you just had one replaced. These are prone to failure on 4th gen Maximas. I replaced coil pack #1, which was almost dead. Guess what, only a month or so after that coil #5 started to go bad, as I found out 4 months after when it triggered a "cylider #5 misfire" code.

after this dpassino asked the question: "how did you find out that is was the coils? did you use a special tool or some other means? " and BOSS answered that with this:

I don't quite know how to explain it. You'd have to go through a coil problem to know what I'm talking about. Deteriorating coils have these specific pauses or hesitations that you get from nothing else, but ignition coils.

Some say that knock sensor produces these too, but it DOESN'T. The "lag" sort of feel or power loss feel that you get out of a bad knock sensor is very different. Only ignition coils cause the MICRO-SECOND, or perhaps MILLI-SECOND pauses, usually under heavy load, most often when say going WOT.

Like I said, it's hard to explain, but once you go through a defective coil once, you'll never blame another component for the frequent hesitations. I've been on the org long enough and you wouldn't believe how many members had these same problems. It's funny actually because I've honestly seen people spend thousands of dollars, replacing unnecessary parts, which happens more often than you think.

In 90% of these cases, I've heard too many times of people replacing the following:

1) Fuel filter, which you need not replace - maybe once in your vehicle's lifetime provided that you put clean gas in. Either way, it wouldn't cause the kind of hesitations we're talking about here.

2) Knock sensor - (like I already mentioned above)

3) New throttle body or cleaning TB - if it really were clogged to the max, you'd notice your car "choking" or simply loss of power, which again would feel far different from the short pauses or hesitations

4) spark plugs - again, no point in changing those if they look good, that's all there's to it

5) fuel pump, fuel injectors, and others - again, no micro-second misfiring would result from these, symptoms would be different.

In the end, ONLY heavy electrical wattage, like the one found flowing through the ignition coils can cause very frequent, micro-second misfiring of a cylinder. Lastly, you must accept the fact that OUR CARS CAME WITH SH!TTY IGNITION COILS - END OF STORY!

 

It is probably the coil packs. The maximas are kind of known to have them be bad. Mine is doing the same hesitation, and I have not had a chance to go change them. I hate it. I think it is the coils, because it is not the plugs. I got a new fuel filter just in case, that I am going to try out. Check out this thread too:

http://forums.maxima.org/showthread.php?t=286287

Hope this helps. Let us know what happens.
**note...most of what I have heard, it is the top(right three) ones up by the windshield that go bad. FYI...I would try those first. No need to do all six if you don't need to.**

 

its your MAF

 

i just checked codes and it game me the 0304 which is a knock sensor. i guess il have to look into that but i also want to look into this whole coil pack deal. is there any way to check the coil packs. and any links to knock sensor info would be great.i know theres atleast one knock sensor thread on like every page soo il have to look too. but any info will def. help
thanx again guys

 

yeah i have the same problem...or maybe not...

Is this symptom kinda like: floor the gas...pause....THEN WOT?

That pause is about a half a second or so...would that be what you guys are talking bout? or is that just the automatic transmition in the maxima that causes that pause naturally...no, yes?

 

There is usually new knock sensors on eBay for $90 shipped. If it's not there right now just wait for a few days for it to show up. Search for "maxima knock sensor" on eBay.

Here's another auction going on: http://cgi.ebay.com/ebaymotors/ws/eB...tem=2465265433

 

yea i have that problem XeroX and i dont know whether its the auto trans or not im hoping not it really anoies the hell out of me!
so im gonna change my KS and see what happens then go from there.