transmission Problem?

[NISTECH]

Crappy parts. Nissan updated the airflow meter with a new design. So when we replace them we have to reprogram the ECM for the new meter. Remember in about 99 renult took over a large part of nissan. In turn in 2000 the quality of the parts took a dive. they have been essentially stepping over dollars to pick up dimes.

Grams per second , sorry

[NISTECH]

oh and the reason I say maxi's is because they were the most prdoment failures and his failure reminded me of the many I have done. The max was the biggest failure rate on the Maf's other car shave them but the systoms are more typical of a maf failure. [flat on its face no accel]

[DAEDALUS]

they have been essentially stepping over dollars to pick up dimes.

Witnessing quite a bit of that in my own industry. An entire decade of new managers pushing biz theories from the 90s way too far. THE LOW HANGING FRUIT IS GONE! NOW YOU HAVE TO START DOING SOME ACTUAL THINKING.

Edit: Just clicked on this news article:The president of Toyota Motor says he has told his engineering chief to find a way to cut in half the price difference between fuel-efficient gas-electric hybrids and similar gasoline models.

And off they go. Future's looking dim.

[NISTECH]

Not to stray to far off topic. The electric portion of the hybrid altima in 07 is from the prius[sp?] The gas powered portion of the engine is still nissan.

The hybrids are extreamly dangerous to work on already. and they are going to cut costs??? I mean only 4 toyota techs were electricuted working on them!!!! Scary thought. glad they will only be worked on a certain authorized nissan dealers.

[5seryan]

so to make sure i have this right... if i test the voltage on the maf connector and the voltage checks out ok that means that the maf is toast correct? is this a definate way to determine if the MAF is the cause of my problems? I found a MAF in the area but want to know for sure if its the MAF before i go buy i new one. Im gettin the multimeter tonight.

[DAEDALUS]

I think what Nistech is saying is that if the voltage is way off at the connector, then that's a really good indication of a bad MAF, but if the voltage is near the values given, the MAF may still be marginal. Go ahead and get the multimeter. Hopefully it confirms the MAF and you can put this behind you.

[5seryan]

WOuldnt the voltage be "on" at the connector if the MAF were bad. if the voltage were off that would lead me to believe that the maf were ok and some other electrical component wsa messing up the voltage to the maf. I'm confused. i need deffinate answers on what to look for voltage wise as compared to the FSM. Btw what does NG stand for in the manual. I'm guessing it stands for no/not good.

[RobertsnewQ]

You've got it backwards. The voltage they're talking about is the signal voltage *FROM* the MAF.

The MAF gets +12v, and GND, and gives back between 0 and 5V.

Nisstech is saying that even if the MAF tests good according to the FSM the test is not accurate enough to tell you if it really is good or bad in some cases.

[5seryan]

Thanks for the clarification.

[NISTECH]

That is what i am saying. That is why I moniter all those other items to get a better veiw of what is happening with the fuel control. since your maf is having the more typical MAF failure symptoms as of late I suspect you will see voltages out of spec.

[5seryan]

So i got a new MAF finally and put the thing in. Nothing...at all. the car started then slowly the RPM's dropped until the car died. I have a video of exactly what im talking about but Wes is gone so i have no one to host it. If i hit the Gas it immediately kills the engine.
Modified by 5seryan at 6:17 PM 9/19/2005

[NISTECH]

make sure you have it going in the right direction and that your intake hoses between the meter and the throttle body are tightly sealed. Any foriegn air in those tubes will cause this effect.

[5seryan]

i did do that. I tried both MAF's. they both acted the same. The car would start then die immediately if i gave it any gas. if i didnt then it would slowly die. is it possible that it is the fuel pump?

[maxnix]

Quite! What is the car's maintenance history?

[elwesso]

Fuel pump needs replaced regardless, it was loud as hell when i was there! not to mention it was on E

[DAEDALUS]

is it possible that it is the fuel pump?

Do you *really* want more guesses? You could have a brand new MAF, a brand new fuel pump and a brand new TPS, and still not find the root cause. It could be a bent harness pin for all we know. Go get that $20 voltmeter and that $35 fuel pressure gauge, and spend a couple hours doing proper diagnostics.

[NISTECH]

Do you *really* want more guesses? You could have a brand new MAF, a brand new fuel pump and a brand new TPS, and still not find the root cause. It could be a bent harness pin for all we know. Go get that $20 voltmeter and that $35 fuel pressure gauge, and spend a couple hours doing proper diagnostics.

[5seryan]

So I finally got it running. Not the greatest but at least it doesnt die. anyways for future reference it was the fuel filter. Figures a 10 part could cause a car not to run. You guys arent gonna like to hear this, especically the moderators... but the fuel filter was leaking BLACK gas. The gas goin in was fine. the gas comin out was well black. I thought i took out the wrong thing at first until i smelled it and was asured it was gas. i have a picture of it. it aint pretty. here it is.



Anyways for those of you who havent changed their filter i would spent the 10 buck and take the 15 mins to get that done. So now im on to the fuel pump and then probably the VC gasket. Thanks for everyones help and imput.

[911/Q45]

Your injectors are probably trashed now too by the bad stuff coming out of the dirty filter.

[5seryan]

Ive run some injector cleaner through them. i did it twice before earlier this summer. fom the looks of that i should probably do it again... or i might need some new injectors which would suck. Now i have this crazy rough idle that is visible from outside the car. as well as a sticking throttle/pedal and the old problem of not being able to get it past 4-5k rpms.

[Q451990]

Not sure about your financial situation... but it may be time for some professional intervention. A good injector cleaning and fogging and new fuel pump (and controller?) could do wonders for your Q.

Heath

[5seryan]

Fuel pump coming... and professionals well they can s*** my b**** no offense ot anyone here who works as one but id rather be carted around then overpay someone to fix my car. Ill take my sweet time. And maybe ill get lucky. I consider it a learning experiance.

[NISTECH]

Gee when a customer pays me to work on their car I dont feel they are overpaying me. I feel they are pauying for my training and experiance.

[5seryan]

Agreed but, with my car i dont feel that taking it to a dealership or a professional is worth it due to my cars value. If this car was new or newer or just worth more then i wouldnt touch it most likely. Also i have always wanted to learn about cars...now i have an opportunity.

[Q451990]

As long as you're enjoying this and learning something it's cool... I would be frustrated as hell by now - I hate throwing parts at something in place of diagnosing. As long as I'm replacing maintenence items, everything is cool... but dish out some $$ on something I didn't need irks me. That's why I suggested what I did...

Heath

[5seryan]

Yeah i hear you on that. i made sure with the MAF that i could return it so thats what i did. and the fuel filter was 10 bucks. basically i started with thing that are cheap or i could return.

[maxnix]

All of this, and never a mention of the service history.

Fuel system is trashed. Better pull and steam clean fuel tank, replace rubber in the fuel line, flush/replace the metal fuel lines, and proabably pull and bench clean/replace the injectors.

Else, you will be back to this problem very soon.

[911/Q45]

But he won't have wasted any money on those pesky techs!

[5seryan]

But he won't have wasted any money on those pesky techs!

INDEED!

[NISTECH]

Whew its amazing you guys get any help. That fuel filter looks like it was dragging behind the car is a 4X4 event and your here B****ing about how much techs cost?? Holly mosses. maintain your car and this likely wouldnt happen.

Unsubscribe sheesus!!