Main IndexAuto Repair Home Search Posts SEARCH
Who's Online WHO'S
Log in LOG

1996 Nissan Maxima - Won't Rev P0100

  Email This Post


Jul 17, 2010, 7:57 PM

Post #1 of 9 (4389 views)
1996 Nissan Maxima - Won't Rev P0100 Sign In

The car refuses to rev past 2,500 rpms. It idles fairly well... maybe a little rough, but as soon as you start revving it the rpm gauge just starts bouncing right around 2,500 rpm. Definitely seems like air/fuel mix problem, and that code points to a faulty MAF.

So I clean the MAF out. Clean out the TB. No luck. I eventually bite the bullet and replace the MAF. Not cheap boys&girls, and that STILL didn't fix the issue!

What could it be at this point? The car isn't very drivable, and I don't really want to drive it much, it seems like it could be very bad for it.

Please, any assistance is much appreciated! Thank you!!

Veteran / Moderator

Jul 17, 2010, 10:26 PM

Post #2 of 9 (4376 views)
Re: 1996 Nissan Maxima - Won't Rev P0100 [In reply to] Sign In

I guess it's a little too late for this time but for the future.....

Any code you get from your PCM isn't telling you what part is bad, it's telling you what system is being affected.

It's not a bad idea to read up a little on the part in question to see how it works. If by chance it has it's own power source then you would definitely what to check for power and ground at a minium.

In your case, it does have a 12v source off the ECCS relay, so you should start with checking term #1 to see if you have 12v.


(This post was edited by Sidom on Jul 17, 2010, 10:26 PM)


Jul 18, 2010, 11:52 AM

Post #3 of 9 (4372 views)
Re: 1996 Nissan Maxima - Won't Rev P0100 [In reply to] Sign In

Yea, I pulled the plug out of the new MAF and placed the probes directly on the exposed metal on that side, and I still get no voltage. I was told the car should not be running, but the key turned to ON and I'll get 12v on the red wire. I'm still not getting any voltage on any of the wires... I assume it's DC...? I tried switching to AC just to see, no go. Kept rechecking the voltmeter on the battery to be sure the voltmeter is ok - it is.

So is there a fuse or relay to look at? I've pulled a few that I thought may be related, they all look fine. I can't find any fuse that looks like it's directly related to the MAF or intake system at all...

Veteran / Moderator

Jul 18, 2010, 10:26 PM

Post #4 of 9 (4369 views)
Re: 1996 Nissan Maxima - Won't Rev P0100 [In reply to] Sign In

That gets it's power from the ECCS relay..... Now we're gonna check the relay connecter for power & ground 1st before buyin a relay,,,,,right???? lol Wink

Yes, you are correct, that should be 12v DC and it should have power KOEO (key on engine off)

Also I will mention, since the pcm is grounding the relay, it would be best to test all this with a good digital voltmeter....definitely NO test lights


(This post was edited by Sidom on Jul 18, 2010, 10:27 PM)


Jul 19, 2010, 11:40 PM

Post #5 of 9 (4363 views)
Re: 1996 Nissan Maxima - Won't Rev P0100 [In reply to] Sign In

Definitely testing with a voltmeter... not a great digital one... just a cheap analog one. But it has ohms, dc, ac, etc...

At any rate, I do get voltage at the ECCS relay. What's the next step? Continuity from the ECM to the harness I assume?

Veteran / Moderator

Jul 19, 2010, 11:58 PM

Post #6 of 9 (4361 views)
Re: 1996 Nissan Maxima - Won't Rev P0100 [In reply to] Sign In

Actually you don't want to use a analog voltmeter (one with a needle) that is the same as a test light. There isn't enough built in resistance in those.
Most digital voltmeters are high impedance, I believe around 10 megaohms, this is too limit the current flow on a circuit you are checking. Analogs & tests lights don't have enough built in resistance and can actually damage a PCM.

Old school rule of thumb was if it's digital, it's safe to check computer circuits. This is not true anymore (Thank you China). I personally know of a buddy who spiked his Ford PCM with a cheap POS digital from Harbour Freight (even after I offered to loan him my Fluke).

IF it comes between checking it with an analog voltmeter or throwing a ECCS relay at it..............I'd throw the relay at it... Even if the relay doesn't fix it, it will probably be cheaper..........


(This post was edited by Sidom on Jul 19, 2010, 11:59 PM)


Jul 20, 2010, 12:00 AM

Post #7 of 9 (4356 views)
Re: 1996 Nissan Maxima - Won't Rev P0100 [In reply to] Sign In

Damn so even if I do find my "nice" voltmeter it still won't work?!? Ugh. Well I swapped the relay with the FAN1 relay, the problem persists...

Veteran / Moderator

Jul 20, 2010, 12:52 AM

Post #8 of 9 (4354 views)
Re: 1996 Nissan Maxima - Won't Rev P0100 [In reply to] Sign In

You can check the 12v feeds TO the relay, that just battery voltage. Just look at the wiring diagrams, if the circuit goes to or from the PCM then use caution. The ground for the control side of the relay is just that, a ground from the PCM, while not as critical as say checking a ref voltage circuit it's still a PCM circuit so I always error on the side of caution.

But if it's just battery voltage, relays, motors & solenoids.....Have at it with the good old analog.............



Jul 20, 2010, 1:05 AM

Post #9 of 9 (4356 views)
Re: 1996 Nissan Maxima - Won't Rev P0100 [In reply to] Sign In

Good to know. I can't seem to find my other voltmeter anywhere... Any recommendations on a new one? Wink

1996 Nissan Maxima - Won't Rev P0100

  Email This Post

Latest Forum Post
Hello all. I am going to take my car into the shop to see if they can help me di...
Actually my car is a boat.77 Carver with ford 351 w. My question concerns the wi...
had problem with break light staying on. tapped the switch on the master cylinde...
Hi, I love my car but have a problem that I've been unable to fix and would lov...
 2008 ford escape automatic dimming rearview mirror not working hi guys thi...
2008 Nissan Sentra 2.0 CVT 50,000 Miles New to DIY auto repair. I want to repla...

Feed Button

Used Car Search
Used Car Price Ranges:
Under $5,000

Over $45,000
Search used Cars By Manufacturers:
Used Acura
Used Audi
Used BMW
Used Buick
Used Cadillac
Used Chevrolet
Used Chrysler
Used Dodge
Used Ford
Used GMC

Used Honda
Used Hyundai
Used Infiniti
Used Jaguar
Used Jeep
Used Kia
Used Land Rover
Used Lexus
Used Lincoln
Used Mazda
Used Mercedes-Benz

Used Mitsubishi
Used Nissan
Used Porsche
Used Saab
Used Scion
Used Subaru
Used Suzuki
Used Toyota
Used Volkswagon
Used Volvo
2010 Honda Civic
2004 Jeep
2012 Mustang
1997 Honda Cr-V
2010 Toyota Prius
2010 BMW 328

Automotive Forum Categories
Automotive Repair
Auto Body Repair and Refinishing
AC Auto Repair Help Forum
Automotive Wiring and Electrical

Auto Insurance and Car Financing
Automotive World
Brake Systems
Car Stereo Repair Advice
Car Troubleshooting
Engine and Car Noises
Engine Fault Codes
Engine Troubleshooting
Exhaust System Repair

Steering and Suspension
Tricks of the Trade
General Discussions
Car Shows and Events
The Bargin Bin
Motor Vehicle Inspection
Car Care Tips
Traffic Ticket Help
Car Racing

Gasoline, Motor Oils, Concept Cars
Remote Control Cars and Vehicles
Truck Repair
Truck Repair Advice

Truck Engine Repair
Truck Suspension Repair
Motorcycle Repair
Motorcycle and ATV Repairs

Motorcycle Body Repair
Motorcycle Clutch Repair
Motorcycle Engine Repair
Motorcycle Seat Repair
Car Forum Posts - Sitemap

Search for (options) Privacy