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Rough Idle?

Tiny
MJOCHANA
  • MEMBER
  • NISSAN ALTIMA
I am not sure what the problem is. I bought a used Altima GLE. I had trhe engine mounts replaced, the valve cover gasket changed and new plugs, wires, cap/rotor and air filter.

It seems that the car has a vibration when it is idleing, the mechanic that did the work has told me, it could be bad gas so I should use a fuel injector additive and it should get better over the next few months.

There are codes that came up,
1. P0440 Evaporative emission control system small leak, negative pressure
2. P1448 Vent control valve.

The mechanic says these have nothing to do with the vibration/idle issue.

Is it possible the work he did may have caused this?
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Tuesday, February 13th, 2007 AT 10:03 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Rough Idle-did he check the Evap system thoroughly?
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Wednesday, February 14th, 2007 AT 5:46 AM
Tiny
MJOCHANA
  • MEMBER
  • 4 POSTS
No he didn't, just hooked up the monitor under the dash by the fuse box and recived the codes.

I have another question,

Now. When I run the car for a while with the A/C, there is white smoke coming fromt he engine compartment, towards the back. So it does not look like it is coming from the radiator. What wonderful problem might this be?
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Wednesday, February 14th, 2007 AT 10:05 AM
Tiny
MJOCHANA
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  • 4 POSTS
Sorry

it is a 1998 Nissan Altima GLE 91,000 mile
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Wednesday, February 14th, 2007 AT 10:07 AM

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