decreased power loss of power
 

i had the scariest scenario just happen to me like 20 mins ago..... i was driving the z regularly just around 45mph when all of a sudden all the power cut off the car went to a immediate deceleration and i found myself only going like 10mph i was freaking the **** out :shakes head: not to mention a car almost slammed into me from the rear because this was happening?!? i press on the gas and its bogging as in its not moving..... lucky thing this happened right in front of nissan so i made a u turn and pulled in.... :shakes head: has this happened to anyone...??!?! i didnt do anything to the car electronic wise.... and all i did was remove the front bumper to install my front amuse bumper?!?

I guess the Amuse creates to much downforce.

That is odd. Would you say it went into limp mode? Good thing you where right there at Nissan.

What did Nissan find out?

That happened a few times on my accord. Faulty ignition switch.

Hmm weird. Let us know what Nissan says.

This

idk yet.... its still at nissan :( sucks she was even on her way to my friends body shop to complete the amuse install and paint..... idk if it went limp mode.... but i immediately checked my oil temp and they were at 140 degress only not even at its usual 180-190 degrees she usually runs on i hope this isnt a common problem on the z's..... because it literally scares the **** outa you..... if the guy behind me wasnt far.... then he woulda crashed into me.... from how fast i was going and then immidiately went into 10mph it was like someone slammed the brakes for me.... ill keep everyone posted...

Damn bro keep us posted, i'm sure it'll be something small. When i got my '00 dakota new i had it for 3 days and it leaked trans fluid all over the driveway. The guys at work ragged the S out of me FOREVER it was a bent relief tube or something like that. Then about a year or so and 4k miles later i was coming home from work and it just died when i was about half way through the tunnel. A cop was a few cars back so he was AZZ, i mean nice enough to use the metal ram crap on the front of his car to push me the hell out the way. Cause i ws blocking a two lane two way tunnel at five 0'clock, doing 500 bucks worth of damage to my xeon bodykit which i ended up having to pay for. It ended up being a fifty dollar sensor, never had any other problems with the truck i still have it today.

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I think your ECU has a glitch it needs a reflash something made the VDC panic and lock all wheels.:confused:

hey, this scenario have happened to me before... but i was speeding up a ramp, and sucked in a plastic bag and it was stuck in the intake. it caused my car to do exactly what u said, power cut off, and decreased to around 10-15MPH (even if i press the gas nothing happened)... check ur intakes, maybe something came loos.

Simota1, this is clearly related to your gas gauge overlay!

Just trying to cheer you up.:icon17: That sounds like a pretty scary thing to happen. I hope they find the problem. Interested in what they find.

How much gas did you have in the tank. ...fuel starvation issue (?)... with the car going into limp home mode (?)

what i think could have happened is that my intake "air ducting" was still connected but i wrapped the hoses in a circle in the reinforcment bar maybe i chocked out the intakes idk? wat ever it is ill keep you guys posted..... nissan will have my car till monday cause today is a sunday now :crying: no amusing news till monday.... but once i get my car back itll go straight to the body shop....

btw guys thanks for tryna cheer me up :D

Anytime brother :tiphat:

Seems you defiantly feel better about it today. I know the feeling.

Did you try shutting it down and starting it back up? I might have had a similar occurance. I'm still not sure if it went to limp mode or just a glitch. It happened before I knew anything about issues with oil temp with the Z.

I was driving home in rush hour traffic. As soon as I got off the parkway, I stopped at a stop sign near the exit ramp. Revved to around 3,500 rpm and the engine just cuts off power. I pulled over to a side street. At this point the engine didn't sound healthy at all, so I shut her off. Waited about 5 minutes and everything was back to normal like nothing happened. The dealer pulled a code, but I don't remember what it was. All the signs pointed to limp mode, so I'm guessing that was the problem.

Come to think of it, that was the reason I joined the forum.

my friend at the dealer said it probably did go into limp mode because it was trying to protect itself..... they should have a light that warns you that its in limp mode the whole time it was doing that weird thing the cel was off and no other warning lights was flashing only the tpms sensor because i dont have mine on the car anymore....

Did you happen to check the oil level? I hate to be the burden of bad news. I had the same scenario and when I pulled over the car was low 3.5 quarts of oil and it only had 2500 miles on it. It's now having the short block replaced and that’s after they changed the timing sprockets and chains.
Good luck,
Tom

Nissan does a piss poor job with their warning lights. My Audi A4s used to pop a warning light even if it was just a turn signal bulb going out. In the Z, you can be completely out of oil and the warning light won't be on.

Sounds like a fuel cut...cornering with a low tank at high speed?

Sounds like a fuel cut...cornering with a low tank at high speed?
He never mentioned that in his OP.

Yea that's crazy. By the time the oil light comes on it's too late for most cars. There has to be something better?

hey everyone i got really really bad news from nissan... it broke my heart but its my fault.... :( so basically everyone knows that my car has diy intakes with no heatshields.... heres what it lead to.... since i have headers on my car now it generates a good amount of heat..... even with the thermal wrap i noticed that the car has a crazy amount of heat in the bay.... so since i dont have heat shields my car was sucking in 180 degree air.... and since my car is running rich from all the performance mods done to it the hot air + richness in fuel lead my plugs to foul... so now about two of my plugs are fouled out... **** NOW i have to change all the damn plugs in my car.... which is hilarious because she only has like 7,500 on her... and get a G3 stillen intake or any intake with a heat shield i hate the fact that i was so f*cking cheap to buy an intake and now it costs more to fix it..... FML lesson learned never... i mean NEVER go cheap when it involves the engine.....:shakes head:

i forgot to add... since it was the intakes fault for not having heat sheilds and thats pretty much what lead my car to break..... its NOT covered under warranty.... FML again lol

Damn i'm sorry to hear that.... hope you get that fixed up soon bro. we all learn one way or another.

I've learned multiple times over that going cheap just costs more in the long run. Tried to go cheap with the oil cooler and had to get the expensive one later. Tried to go cheap getting a set of tires mounted only to have my rims mangled by a crap installer and had to pay again to get it done right. The list goes on and on. Just pay for the good stuff up front and you'll fare much better in the long run.

Typically cars run LEAN when you have full bolt-ons and no tune, not rich. Do you have an AF monitor? I bet you're lean, not rich. Rich would require a bad tune.

i just realized something.... i think the dealer here is a bullcraping me whats the typical ambient temperature of an intake? mine said it was sucking in 180 degrees... they said the factory spec is 10 degrees?!? is that even possible? and on the paper it says that i need injectors to accommodate the bolt ons but it also says im running rich so wouldnt that mean that mean by adding bigger injectors it would make my car even more rich? and is this true i qoute the paper..

"conclusion engine modifications resulting in uneven airflow causing a/f mixture to be out of specification
heat soak causing ecu to retard ignition timing, in order to prevent abnormal combustion/detontation.which in turn is leading to premature fouling of spark plugs"

they said number 3 spark plug is out but shes very smooth on idle not sputtering or shaking?!? man idk any input greatly appreciated

another thing if i was rich... wouldnt i smell the odor from the exhaust and it would put out black smoke? crap i know lean is very bad right like really really bad

not sure i can answer that for you.

but if you are worried about the heat, if you get a chance to pull off the header/TP get them ceramic coated and then wrapped.

If its HFC, just coat the outside and wrap that. Should help quite a bit.

i've learned never to trust the dealer, when my problem with the intake happened, they quoted me $1100 to fix it...and all i needed was new filters (because the first one got ripped by the plastic bag i sucked) ... take it somewhere else and get it checked. sorry to hear about ur car if what they said was true.

good luck

i got the ones that are ceramic coated.... :ugh2:

the problem is the mechanics out here are morons :shakes head: especially at the dealer my friend that was good at the dealer got fired because he was tryna stand up for a guy.... :shakes head: ill take it to another shop....

I would kill to have a local dealership that knew WTF they were doing. Ask to see the spark plug then compare it to a plug fouling gauge (the thingy with pictures of spark plugs in different run conditions)check your plugs

Also a properly equipped nissan service department has a fricken easy job when it comes to diagnosing these cars, Consult3 can tell you anything and test everything unless $hit is actually broken

Simota - you're making me nervous.

First of all, I'm really sorry to hear this happened to you

Secondly, although I have heat shields, I was going to run a similar setup.
I have Typhoons (with heat shields), but am getting ready to order a set of the ceramic coated stillen headers.
Do I need to worry about anything like this?

And lastly, it's been a while since I've even tried to change a set of plugs, but how much does it cost to replace plugs at the stealership?

the stealership qouted me 600 to change plugs..... :shakes head: idk what the hell they are smoking but yah.... they kept telling me that there is a heat sheild on the header that makes changing on spark plug hard.... its kinda funny they mention that because i dont even have heat shields anymore because they dont mount on the stillen headers....

honestly bro i wouldnt worry about anything im honestly thinking its something else.... ill have my friend read the z tomoro with his scanner.... because this is what i think everyone on this forum has the same setup as me..... headers cats and catback and intake wether it would be takeda k and n stillen what ever... like spearfish mentioned adding all these performance parts makes the car lean... not rich and if my car were running rich then it would be another problem probably in the electronic side.... im thinking its something much simpler maybe dirty sensors on the mafs ill clean them and then put them back on the car.....

my friend at the shop also told me it could have been since my car sits alot it could have just had an error or something and went limp mode.... i now accept that i really do think that i went into limp mode that morning.... ill keep everyone posted....

Yea, I don't see where the heat sheild (if you had one) has anything to do with changing spark plugs on are car. There not in that vacinity anyways. I've changed mine several times on my 350.

It sounds like limp mode. But I personal haven't heard of are cars going into limp mode while driving under normal conditions. But doesn't mean it couldn't happen. Probably could if it reads something off. I had limp mode on my G37 one time but I was backing out of a parking spot and it wouldn't rev past 2500.

Simota - thanks, I feel better.
And I'll stay tuned for more updates.
Good luck with the other reads....

I'd still like to see pics of the plugs they claim are fouled?

Yea show us some pics, Ive had my FI long tube headers and it gets hot in the engine bay but not that hot, I wouldnt say its much hotter if any than stock, You dont have the extremely hot cats sitting in there if your catless like I am.

ill take pics when they take out one of the spark plugs... :tup:

You da man bro....rep to you.