The light of "Engine serving soon" is on

Tiny
GANOU
  • NISSAN ALTIMA

2001 nissan altima

The light of "Engine serving soon" is on on the front panel. Went to Autozone and asked for check

the problem. The detail content as following:
Troubleshooting P0304

Definition:
Cylinder misfire detected-Cylinder number 4

Explanation:
The powertrain control module monitors the crankshaft speed and has detected a misfire condition

Probable causes:
1. Ignition system fault-spark plug(s), ignition wires,
2. Vacuum leak,
3. Injector fault,
4. High or low fuel pressure.

The light has been on for months. When I wait for on the red light and pedal the break, I feel the

car trying to push out although I break it and it is viberating more than before.

Is it a big problem? If I try to fix it by myself, is there a probability and what is the

procedure? Thank you!

Ganou

Do you
have the same problem?
Yes
No
Tuesday, May 1st, 2007 AT 1:04 PM

14 Replies

Tiny
KIN CHAN
  • MEMBER

How much u know about cars and |OBD|2 system, and how much equipment u've got determine if u can fix the car.

Was this
answer
helpful?
Yes
No
Tuesday, May 1st, 2007 AT 2:13 PM
Tiny
RASMATAZ
  • MEMBER

When was it last major tuned-up?

Was this
answer
helpful?
Yes
No
Tuesday, May 1st, 2007 AT 2:39 PM
Tiny
GANOU
  • MEMBER

When was it last major tuned-up?[/Quote:7a807b5e89]

Hi,

I do not know. I buy it last year Nov. Could you give me some suggestion. Thanks.

Was this
answer
helpful?
Yes
No
Tuesday, May 1st, 2007 AT 9:59 PM
Tiny
RASMATAZ
  • MEMBER

When was it last major tuned-up?[/Quote:51fd941a91]

Hi,

I do not know. I buy it last year Nov. Could you give me some suggestion. Thanks.[/Quote:51fd941a91]

Do a compression check on that cylinder to rule out an exhaust valve problem causing a lean misfire, also with the sparkplug and wire

Was this
answer
helpful?
Yes
No
Tuesday, May 1st, 2007 AT 10:32 PM
Tiny
KIN CHAN
  • MEMBER

Hey ras.I AM TICKED OFF
u remeber that contour with no start.
I think that guy keep saying he has spark and fuel pressure and no start.. So I told him spray propane and see if it keep running. Hell it does and he took it to the dealer turn out to be factory security sys.
These auto zone scanner deal really make us look bad.U know it I know it. If it came to my shop my modis will pu' up the code on enchance side. All else fail if I see no injectors pulse. It'll take me 5 sec to look up body ctrl module. We ought stop telling people use auto zone obd2 code reader and mislead them to a false sense of believe a $35 piece of crap obd 2 code reader will display all the trouble code relating to a problem.I HAD IT WITH THESE DUMB PEOPLE WHO JUST WANNA LIVE IN A WORLD THEY LIKE TO BELIEVE !

Was this
answer
helpful?
Yes
No
Tuesday, May 1st, 2007 AT 10:48 PM
Tiny
RASMATAZ
  • MEMBER

KC

You know damn well as I that Autozone has freebies to give and that's where the general public goes when that idiot light comes On. Just because a partmans pull the codes does not necessaryly means that's the actual problem. Further people don't realize there's a difference between a code reader and a scantool. Or a generic and enchance codes.

For me I don't send them there-also there's a difference between a partsman and a full blown auto tech like us.

And yes I remember it was a goose chase on that.

Hang in there my friend, you got your own world to believe, let the others think! For themselves sooner or later they'll learn the hard way.

Hear from you later.

Was this
answer
helpful?
Yes
No
Wednesday, May 2nd, 2007 AT 12:57 AM
Tiny
GANOU
  • MEMBER

Do a compression check on that cylinder to rule out an exhaust valve problem causing a lean misfire, also with the sparkplug and wire[/quote]

Thank you for all answers!

I just changed all four spark plugs and reset the MCU, so the light of "Engine serving soon" was off after the changing. But only several minutes running later, it is on again. I still did not change wires, how can I judge the wires' bad or good? Please give me more suggestions.
Thanks

Was this
answer
helpful?
Yes
No
Saturday, May 5th, 2007 AT 5:08 PM
Tiny
RASMATAZ
  • MEMBER

You can do a resistance check on it anything over 30K ohms on a wire is no good-my way is just change it.

Good Luck

Was this
answer
helpful?
Yes
No
Saturday, May 5th, 2007 AT 7:21 PM
Tiny
GANOU
  • MEMBER

Thank you for answers.

This morning I just changed all wires and had a happy time about 10 miles, but after that the light of "Engine serving soon" is on again. Could you give me more suggestion. Thanks,

Ganou

Was this
answer
helpful?
Yes
No
Sunday, May 6th, 2007 AT 10:07 PM
Tiny
JGAUDIG16251625
  • MEMBER

My 97 Nissan Altima 2.2 liter with 112,000 mi had a very similar problem. I used carb cleaner spray to spray on the intake manifold near the fuel injectors on # 4 cylinder. I discovered the engine idle would speed up at the #4intake port on the bottom of the intake manifold. Analysis: leaking air intake gasket on # 4. Had Mech R/R air intake system (2 Parts), replace all gaskets and related hose. Found an additional gasket part missing on #1 cylinder. Repair Completly fixed service light and car passed smog test a couple weeks later. I went through all the new spark plug, distributor and wire problems repairs that you did till I found the leak, Even the engine shook at idle, but got smoother a highway speed. Cost $550 to fix. :Mrgreen:

Was this
answer
helpful?
Yes
No
Monday, May 7th, 2007 AT 1:06 AM
Tiny
GANOU
  • MEMBER

To me your practice is very valuable. Hope that I am luck to git rid of the problem.

Thank you very much!

Ganou

Was this
answer
helpful?
Yes
No
Monday, May 7th, 2007 AT 1:17 PM
Tiny
GANOU
  • MEMBER

[quote="ganou"]

Thanks,

Could you tell me it is easy or not to change the intake gasket? Can I do it by myself or I have to send the car to dealer to repair?
Thanks.

Was this
answer
helpful?
Yes
No
Monday, May 7th, 2007 AT 1:55 PM
Tiny
KIN CHAN
  • MEMBER

I've got a questions here---> what happen if it is not the intake manifold leak. Are we playing musical chair here or wheels of fortune?.

Was this
answer
helpful?
Yes
No
Friday, May 11th, 2007 AT 5:55 PM
Tiny
JGAUDIG16251625
  • MEMBER

1. IF THE 99 NISSAN HAS A LEAKING INTAKE GASKET The leak CAN BE DETECTED BY SPRAYING CARBEURATOR CLEANER ON THE AREAS WHERE THE GASKETS GO BETWEEN THE HEAD AND INTAKE MANIFOLD, and AT THE JOINTS BETWEEN THE TWO MANIFOLD HALVES.

2. When this is done the engine revs will increase because the carb cleaner is sucked into the intake manifold and then ignited in the cylinder, causing the audible RPM increase. That increase is the key to detecting the leaking manifold. If the rev's don't increase there is no leak. Then the problem has to be elsewhere.

3. I've been a mechanic on my cars since 1957 and my 97 Altima is the first manifold gasket leak I ever had. (OK, so I'm experienced. But not a pro. )

4 I would not replace the 99 Nissan gaskets unless it failed the carb cleaner test. I notice another person mentioned using propane gas. Propane is a bit more explosive.
And more of a hazard than carb cleaner, but I bet it works good. I learned the carb cleaner trick from a Mexican mechanic (legal).

Was this
answer
helpful?
Yes
No
Friday, May 11th, 2007 AT 8:47 PM

Please login or register to post a reply.

Recommended Guides