SolaraGuy.com • View topic - I-4

by **Maniax** » Fri May 08, 2009 5:07 pm

Im not sure if everyone's car does this but when i turn my ac on even on lowest even if i barley push on the gas it will make a sort of choking noise.Anything to look into?

by **5sfe** » Fri May 08, 2009 5:15 pm

do you have an oem intake system??

by **Maniax** » Fri May 08, 2009 9:04 pm

Dosen't that mean stock?If so yea.

by **gnegroni** » Fri May 08, 2009 11:09 pm

Choking As in the engine severely hampered by the AC turning on? I have the same car in manual and when the AC turns on the car does hesitate a bit and feels slowed down.

by **Maniax** » Fri May 08, 2009 11:19 pm

gnegroni wrote:Choking As in the engine severely hampered by the AC turning on? I have the same car in manual and when the AC turns on the car does hesitate a bit and feels slowed down.

Yea thats what im talking about.It has done that since i have had the car and i just really thought about it and wondered about it.I guess since it is only a I-4 it does not have a whole lot of hp and it does choke it down.

by **kingkakyle** » Sat May 09, 2009 1:03 am

yes
the ac takes up hp
and since our cars are heavy as hell and the i4 already is low on power it happens
so when i need to accelerate fast i turn off the AC

by **dvdchris45** » Sat May 09, 2009 2:17 am

You I-4 guys have headers, turbos, and other options to boost the power you lose from turning on the AC. Problem solved! :sweet:

by **ctsolara12** » Sat May 09, 2009 6:47 am

It must be normal... I get this also, at idle, when my A/C button is depressed. I noticed the rpm at idle is slightly lower when it happens. It annoys me so much that if I use it, I turn it off at traffic lights then back on when I'm driving lol...

by **panic** » Sat May 09, 2009 9:18 am

I'm surprised - that's what an IAC is for (rather than just an idle speed screw), so that the engine speed is whatever the ECM thinks it should be and doesn't vary with load.
Many years ago, Nissan had a separate solenoid that held the throttle open a bit more at idle, keyed to the same hot wire that turned the compressor on.

by **Maniax** » Sat May 09, 2009 11:45 am

Yea i barley even have my ac on.lol.If its hot,put windows down and drive fast..thats my ac:D..and supercharger where?;)..lol

by **gnegroni** » Sat May 09, 2009 3:15 pm

panic wrote:I'm surprised - that's what an IAC is for (rather than just an idle speed screw), so that the engine speed is whatever the ECM thinks it should be and doesn't vary with load.
Many years ago, Nissan had a separate solenoid that held the throttle open a bit more at idle, keyed to the same hot wire that turned the compressor on.

I guess the I4s were left out of the manufacturing loop? LOL

by **Maniax** » Sun May 10, 2009 10:33 am

Also something.Mine is a I-4 sle..is that correct?And i have a timing belt not a chain.

by **gnegroni** » Sun May 10, 2009 10:39 am

Maniax wrote:Also something.Mine is a I-4 sle..is that correct?And i have a timing belt not a chain.

The 2AZ-FE engine has a chain, not timing belt. I hope that wasn't a sales tip.

by **Maniax** » Sun May 10, 2009 10:51 am

Well from what i see it is a belt.lol.

by **onefiend** » Sun May 10, 2009 11:13 am

^ It's a chain on the 2AZ-FE (i4). You must be looking at something else.

I-4

I-4

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