4g63 Gdi Problem - Mitsubishi-Forums.com
 
LinkBack Thread Tools
post #1 of 14 (permalink) Old 03-21-2011, 01:52 AM Thread Starter
Newbie
 
Join Date: Jul 2007
Posts: 8
Own a 2001 Mitsubishi with a 4G63 GDI 2.0l Engine.

Problem
Car will start and Idle fine at about 1K rpm, within 1 minute engine begins to flutter and Idle jumps to 1500 rpm, engine check light comes on
and flashes on and off. Car has no power and will no rev past 2K rpm
resulting error code is "intake air temperature sensor circuit 1"
Then shut off car and leave off for 2 to 3 minutes results in same problem.

Tried 2 different Maf sensors and same problem.

At my wit's end.... please any and all suggestions

Thanks in addvance.....
mafiacopies is offline  
Sponsored Links
Advertisement
 
post #2 of 14 (permalink) Old 03-21-2011, 02:08 AM
Super Moderator
 
KiT TeUnG 2549's Avatar
 
Join Date: May 2008
Location: Houston , Texas
Posts: 4,009
Send a message via Yahoo to KiT TeUnG 2549
because the code isnt for the air flow meter. its for the Intake Air Temperature sensor. This sensor is located on the water exchanger piping near the thermostat. It reads the temp of the coolant and idealizes wut temp the intake air must be by using that figure and adjusts the fuel delivery and ignition spark table. The reason the light is flashing is because the engine is misfiring.

You Look Like I Need Another Drink
KiT TeUnG 2549 is offline  
post #3 of 14 (permalink) Old 03-21-2011, 03:56 AM Thread Starter
Newbie
 
Join Date: Jul 2007
Posts: 8
<div class='quotetop'>QUOTE (KiT TeUnG 2549 @ Mar 21 2011, 12:08 AM) <{POST_SNAPBACK}></div>
Quote:
because the code isnt for the air flow meter. its for the Intake Air Temperature sensor. This sensor is located on the water exchanger piping near the thermostat. It reads the temp of the coolant and idealizes wut temp the intake air must be by using that figure and adjusts the fuel delivery and ignition spark table. The reason the light is flashing is because the engine is misfiring.[/b]

Thanks alot will check asap


note can the sensor be cleaned and reused or is a new sensor required
mafiacopies is offline  
post #4 of 14 (permalink) Old 03-21-2011, 07:53 AM
Senior
 
tw2005's Avatar
 
Join Date: Sep 2008
Location: Ipswich
Posts: 474
<div class='quotetop'>QUOTE (mafiacopies @ Mar 21 2011, 04:26 PM) <{POST_SNAPBACK}></div>
Quote:
Thanks alot will check asap


note can the sensor be cleaned and reused or is a new sensor required[/b]

Unless it was an electrical connection issue, cleaning anything else will do nothing. I'd test it first before you just go out and buy a new one. If you have an ohmmeter or a multimeter or something that can measure resistance , remove the connector and probe the sensor terminals to measure what resistance is there.This could vary from 2100-2700 ohms at 20deg C to 260- 360 ohms at 80 deg C.

Does the problem you have continue even when the engine is hot? What's the ambient temperature of where you are?








tw2005 is offline  
post #5 of 14 (permalink) Old 03-21-2011, 11:12 AM Thread Starter
Newbie
 
Join Date: Jul 2007
Posts: 8
<div class='quotetop'>QUOTE (TW2005 @ Mar 21 2011, 05:53 AM) <{POST_SNAPBACK}></div>
Quote:
Unless it was an electrical connection issue, cleaning anything else will do nothing. I'd test it first before you just go out and buy a new one. If you have an ohmmeter or a multimeter or something that can measure resistance , remove the connector and probe the sensor terminals to measure what resistance is there.This could vary from 2100-2700 ohms at 20deg C to 260- 360 ohms at 80 deg C.

Does the problem you have continue even when the engine is hot? What's the ambient temperature of where you are?[/b]
Yes it does, but also when it is first started, the problem does not occur under semi-hard revs, only when the engine is allowed to idle.
thanks
mafiacopies is offline  
post #6 of 14 (permalink) Old 03-21-2011, 06:46 PM
Senior
 
tw2005's Avatar
 
Join Date: Sep 2008
Location: Ipswich
Posts: 474
<div class='quotetop'>QUOTE (mafiacopies @ Mar 21 2011, 11:42 PM) <{POST_SNAPBACK}></div>
Quote:
Yes it does, but also when it is first started, the problem does not occur under semi-hard revs, only when the engine is allowed to idle.
thanks[/b]

I'm not convinced it's a temperature sensor issue. Are these electronic throttle bodies or cable dirven?
tw2005 is offline  
post #7 of 14 (permalink) Old 03-21-2011, 11:20 PM Thread Starter
Newbie
 
Join Date: Jul 2007
Posts: 8
<div class='quotetop'>QUOTE (TW2005 @ Mar 21 2011, 04:46 PM) <{POST_SNAPBACK}></div>
Quote:
I'm not convinced it's a temperature sensor issue. Are these electronic throttle bodies or cable dirven?[/b]
1st things 1st thanks to all who have replied, God Bless

2nd I'm also not convinced it's a temperature sensor issue.

3rd KiT TeUnG 2549 said
"because the code isnt for the air flow meter. its for the Intake Air Temperature sensor. This sensor is located on the water exchanger piping near the thermostat."

Checked that sensor according to manual (Please see the attached pdf..) and it is working..

Lastly the Unit I am using is a Mac Tools ET80 ver 1.14
http://www.mactools.com/product/tabi...5793-et80.aspx


Still stuck
Please help

Thanks again
Attached Files
File Type: pdf 13A_GASOLINE_DIRECT_INJECTION__GDI_.pdf (2.19 MB, 35 views)
mafiacopies is offline  
post #8 of 14 (permalink) Old 03-22-2011, 07:12 PM Thread Starter
Newbie
 
Join Date: Jul 2007
Posts: 8
Still stuck
Please help

mafiacopies is offline  
post #9 of 14 (permalink) Old 03-26-2011, 06:27 PM Thread Starter
Newbie
 
Join Date: Jul 2007
Posts: 8
Good News to all
and Thanks again....
Problem Solved....

The main problem was with the Throttle Actuator motor....

Changed the complete throttle body and car running like new...

For reference to the problem... please see the following

http://www.youtube.com/watch?v=6EK1vtuNluA

Once again thanks to all who helped...

by the way upgraded from mac tools to auto boss V30 pro tools,
best thing since "slice bread", even reads codes on the Wife, can't fix them though.....

Thanks and God bless....
mafiacopies is offline  
post #10 of 14 (permalink) Old 03-26-2011, 06:45 PM
Senior
 
tw2005's Avatar
 
Join Date: Sep 2008
Location: Ipswich
Posts: 474
<div class='quotetop'>QUOTE (mafiacopies @ Mar 27 2011, 06:57 AM) <{POST_SNAPBACK}></div>
Quote:
Good News to all
and Thanks again....
Problem Solved....

The main problem was with the Throttle Actuator motor....

Changed the complete throttle body and car running like new...

For reference to the problem... please see the following

http://www.youtube.com/watch?v=6EK1vtuNluA

Once again thanks to all who helped...

by the way upgraded from mac tools to auto boss V30 pro tools,
best thing since "slice bread", even reads codes on the Wife, can't fix them though.....

Thanks and God bless....[/b]
Good to hear, I had a funny feeling it was going to turn out to be a throttle body issue. One of the reasons I asked if it was electronic. having no experience with them makes it hard to give advice and a bit of a stab in the dark.

So did you extract any other codes out of it because I found all that temperature sensor talk very confusing for the symptoms you had. Did your scanner upgrade give you more accurate codes? I wondering if you had the correct code to start with?

I reckon they'd be rather complex, electronic throttle bodies would have to have a few safeguards in place for malfunctions.

I don't know if you picked up on this in that manual you posted but it did say this and they're all to do with the throttle body.

"As for P1220, P1221, P1223, P1224, and P1228, the engine warning lamp flashes. If malfunctions
are detected at the throttle position sensor (1st channel) and the throttle position sensor (2nd channel)
at the same time, or malfunctions are detected at the accelerator pedal position sensor (1st channel)
and the accelerator pedal position sensor (2nd channel) at the same time, the engine warning lamp
will flash."
tw2005 is offline  
post #11 of 14 (permalink) Old 03-26-2011, 08:15 PM Thread Starter
Newbie
 
Join Date: Jul 2007
Posts: 8
Yes the boss v30 did give the correct code P1220 , that led me to test the throttle body motor.
Found the loose magnet...

Thanks again,,,

Any suggestions for the Wife problems....
mafiacopies is offline  
post #12 of 14 (permalink) Old 03-26-2011, 09:34 PM
Senior
 
tw2005's Avatar
 
Join Date: Sep 2008
Location: Ipswich
Posts: 474
<div class='quotetop'>QUOTE (mafiacopies @ Mar 27 2011, 09:45 AM) <{POST_SNAPBACK}></div>
Quote:
Yes the boss v30 did give the correct code P1220 , that led me to test the throttle body motor.
Found the loose magnet...

Thanks again,,,

Any suggestions for the Wife problems....[/b]
No, but you can have mine.

I feel bad not responding with my hunch now, may have saved you some time.

Other comments threw me a little, did not have the confidence , I should have at least highlighted that section in the DTCs as the flashing CEL was the key I feel.
tw2005 is offline  
post #13 of 14 (permalink) Old 03-26-2011, 11:39 PM Thread Starter
Newbie
 
Join Date: Jul 2007
Posts: 8
TW2005
You should never doubt your confidence, the sharing of information regarding problems, is what makes this world a better place.

Any advice from 1's experiences that one chooses to share with another, can and WILL someday saves someone's life or pocket.

Please keep up the good work that you are doing...

God Bless again...

P.s.

Regarding the wife "swap" send all relevant information including date of arrangement to my email... if this works out, I will pay for
the shipping......

Thanks Again
mafiacopies is offline  
post #14 of 14 (permalink) Old 03-27-2011, 12:06 AM
Senior
 
tw2005's Avatar
 
Join Date: Sep 2008
Location: Ipswich
Posts: 474
<div class='quotetop'>QUOTE (mafiacopies @ Mar 27 2011, 01:09 PM) <{POST_SNAPBACK}></div>
Quote:
TW2005
You should never doubt your confidence, the sharing of information regarding problems, is what makes this world a better place.

Any advice from 1's experiences that one chooses to share with another, can and WILL someday saves someone's life or pocket.

Please keep up the good work that you are doing...

God Bless again...

P.s.

Regarding the wife "swap" send all relevant information including date of arrangement to my email... if this works out, I will pay for
the shipping......

Thanks Again[/b]
jokes.

just as well she does not read mits forums
tw2005 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mitsubishi-Forums.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome