Watsup guys, my friend just picked up a 2000 I30 and ever since he got it he felt that it didnt have the power it should have for a vq30. He had no check engine light...but ran his car on the OBDII, and got a "P1320" which is an "Primary Ignition Misfire"...then he took his car to the Infiniti dealership and got it inspected by a Nissan certified mechanic(along with 3 other mechanics) and got the same answer from them...and they all sed to change all 6 coils and plugs b/c there is no way in knowing which coil(s) is bad...so my friend changed them today and now there are NO CODES when he ran his car on the OBDII...n the problem is still there. The car is doing the following after him spending about $600 on OEM parts:

1. Not pulling at top end or low end (hesitating greatly)
2. At 4500 rpm, the car is stuttering very badly
3. Feels like the car is choking up

Also, I wanna add that I have a 2000 Maxima SE at home and just to test his car's performance, we went out on the highway for a quick pull, and my Maxima pulled on the I30 in every gear horribly....He thinks now that the problem is definitely one of two things either the injectors or the MAF sensor, but wouldn't these problems cause the check engine light to come on...

-All suggestions and opinions will be greatly appreciated...THANK YOU

 

I'm not a car specialist, but if were your friend, i would change the MAF, because it can be bad even without pulling any codes. It's not so expensive(100$), so that would be first thing to do when buying a new Maxima/I30...

You said 4.500rpm? Sounds like a broken VIAS not opening at 5.000rpm... There are many threads about that including a TSB...

 

Sounds like a MAF issue to me. There have been instances where .org members were getting horrible hesitation that turned out to be a bad MAF with out tripping a code.

Not to mention 5th gens have a rep for having MAF issues.

Since you have a 2000 and your friend has a 2000, why not just pull your MAF real quick and drop it in his car and go test it? That would be a good trouble shooting start.

 

thanks brio max and i30ds for all your suggestions ...it turned out to be a bad MAF....my friend swapped his bad MAF with my MAF from my 2000 SE

 

Can anyone tell me how easy it is to replace a MAF? Does this MAF have anything to do with
pinging?Thnx for any replies.

 

It's very easy, but when getting a new MAF, you should get the ECU reflash by the dealer...

 

Is a reflash really needed? I changed my MAF to the updated one on my 2000 I30 two years ago myself and did not get the re-flash. It has been running great ever since. (also replaced the coils)

Matter of fact, all pinging, which I had from day one, is gone and I get 32mpg on the highway!

 

4 bolts, an electrical connector, and a clamp. 15 minutes tops.

Pinging is probably due to bad KS, bad spark plugs, bad coils, or sh!tty gas... not really a MAF thing.

 

Hey, mine is a 2000 I30. Started getting P1320 and replaced all the coils with a grey dot(22448-2y000&22448-2Y005). However I didnt replace the plugs. Thats next on my list. I was worried about setting correct torque on the plugs. Why did u change the MAF? Also, do you remember the part number for the updated MAF? THnx.

 

Pardon me but what is KS ? I will replace sparkplugs next just replaced all coils (significantly reduced pinging no more P1320) and I always used V-power for last 1yr/10Kmiles (thats when I bought it).

Thanks.

 

when I replaced the coils I had the same code p1320. Did not replace the plugs, just the coils.(plan to replace the plugs when I get near 90K miles)

I replaced the original MAF when I installed my Berk intake with the K&N filter. My MAF wasn't bad, but I had heard that the orginal design wasn't too good and they tend to go, especally with aftermarket intakes.

The "updated" MAF that I installed was part number
22680-2Y001. It cost ~$100.oo online.

 

Thanks. Will look for MAF. Also you said all the pinging is gone. Did that happen after replacing the coils or after the MAF? My pinging is mostly gone, but I sometimes hear it wen cruising at35mph and I try to slowly press on gas. If I press gas harder then it downshifts and no pinging. I30ds above said that it doesnt have anything to do with MAF. Can you tell me how easy it is to reach it and where to find it? Thanks.

 

Look what i got with my new MAF from Courtesy/Nissan one year ago...


And also here's a interesting thread about that... http://forums.maxima.org/showthread....58751&t=457972
So the decision is on you

 

I got the same code "P1320" during the emission test of my 2000 i30t and failed the test.
For sometime now I have similar issues like:
1. Not pulling at top end or low end (hesitating greatly)
2. At 4500 rpm, the car is stuttering very badly
3. Feels like the car is choking up
Also sometimes it vibrates heavily when I start the car and after running for sometime it gets smooth and no vibrations.

I never done repairs on my own. Never tried. Planning to take it to the dealer to get this fixed. Please tell me what all need to be changed to get my car running nicely.

I have an extended warranty on my car and wondering if they will cover for replacing all the ignition coils when only one or more has failed.
Please help me on what all I need to tell the dealer so they can cover these expenses through my warranty.
Appreciate all your help.

 

I guess these 2000 I30 coils are programmed to die after 6years. I saw 4 people with the P1320 code in this month (including me). I did this all myself a couple of days back. All you need to do is order the 6 coils 22448-2Y000,22448-2Y005 and do it in 45 mins with a socket wrench and a 10" extension. You can pick them from walmart. Its a very simpel job. I remember seeing a detailed photos along with incstructions somewhere in this forum. Check for that thread!

 

KS is knock sensor.

 

Hard to say exactly what made the ping go away since I did the 6 coils, new MAf and installed a Berk intake all at the same time. Also changed gas to Mobil.

Maf is the black tube on the intake between the air filter and the throttle body, with an electrical connection on top of it in the middle of the tube. If you buy a new one, you will see the old one right away. Can't miss it!

( Maybe someone can post a picture of it??)

 

Thanks. I will look for it wen I do the plugs this weekend.. Also, I read things about changing the whole MAF unit (price supposed to be ~$400) and not part of it. I don't now what the whole unit is. But I saw the part number you gave was being sold at ~75$. I will figure it out. I also found most people didn't have any problems even without reflashing their ECM..

 

The 2000-01 MAFs only cost 75-100 for the whole unit. Thats for the black tube and the actual MAF sensor. (comes together as one unit)

Reason other years MAFs are much more expensive is that theirs also includes the temp unit, which is not needed for the 2000-01. (our intake temp unit is separate from the MAF)

 

http://www.courtesyparts.com/Merchan...de=22680-VQ30D

 

Can someone tell me where these instructions are for changing the coils. Being a new member, I am not authorized to make a search or maybe I am not doing it right.

 

I think for 2000 i30t the engine type is VQ35DE. Checked this on my VIN number. Engine Type is C and C means VQ35DE. (http://www.infinitihelp.com/vin.htm). Correct me if I am wrong.

MAF for this is costing more than 400 dollars.

http://www.courtesyparts.com/Merchan...Category_Code=

 

Your engine should be VQ30DE not 35.. Also, Isn't your problem P1320? In that case don't worry about MAF. Just replace all the coils with the new ones. It will fix the misfiring....

 

undo electrical connector, remove the 2 bolts, pull out. do this on each coil and drop the new ones in... easier than replacing spark plugs.

 

Its just one bolt per coil.. Here is a cool link with detailed photos..
http://www.greghome.com/Greg's%20Garage/2002MaxSE/SparkPlugReplacement.htm

BTW I forgot to tell you that you dont need to do that removing intkae assembly. I just posted the link for seeing where the coils are. So dont worry you dont have to open anything other than the plastic infiniti cover under the hood. The rear ones are a little harder but its very simple. ALL U DO IS REMOVE THE COIL. dont have to remove anything.

 

A32 is 2 bolts per coil... one bolt is even easier.

 

Hey I30DS,

The dreaded ping is gone and I can see a raise in power!!!!!!! I still don't believe it... I was using shell v-power for more than a year. I dont know why I had in mind that shell is the greatest brand out there... I've switched multiple gas stations in town but only shell. I thought it was something to do with the car. we even got 2 shell credit cards in our family.

I was driving back from Nashville the other day and almost ran out of gas. Even though I always avoided Marathon like the plague, I had to get some gas before I ran out and no more shells nearby. So I got a couple of gallons of marathon premium w/ STP...After a few miles, I saw that I dont have the dreaded ping anymore when I accelerate and the car is a beast. I feel stupid that I never went beyond shell. After I got back, I filled up with a few more gallons of Marathon prem and I tried everything but couldnt get it to ping.

I dont think its because the KS woke up from a deep sleep but very clearly because of the gas..

 

Yeah, bad gas can definately be a cause of ping and poor engine performance. Glad to hear you got it stopped.

 

Circle K is another to avoid. apparently, they add alot of sulfurs and such to their gas. I had pinging in my diamante from using circle K. Started using Citgo, RaceTrac, and Cumberland Farms. Cleared right up.

 

Interesting that you noticed that the ping resolved when you stopped using Shell.............

When I changed to Mobil gas (see my post above) guess what I had been using for 2 years? You got it...Shell. The only reason I changed to Mobil was that the Shell near my office closed.

Maybe that was more of the reason my ping went away than changing the MAF, & coils, and adding the Berk!

 

I need the part Numbers for Intake Manifold Gasket and spark plugs.Planning to change the Ignition coils for my Infiniti 2000 i30t.

Thanks

Mohiudr