Trouble code P0108

[Jeff99GS]

Okay so I have a 99 eclipse NT with turbo and the car has been idling really shity. so I checked my check engine light and i gave 4 codes.

1. P0138- bank 1 sensor 2 .o2 sensor high voltage...I have no CAT so i think thats why

2.P0140- bank 1 sensor 2 .o2 sensor no activity does this sounds like a bad rear o2?

3. P0401- EGR flow insufficient. I have my egr blocked off, so I think thats why this code is on?

4. P0108- MAP sensor....does that mean my MAP sensor is bad??? could that cause the erratic idle?

I checked and cleaned my IAC, but I guess thats a possibility too?


Does anyone have anymore info on theses codes...especialy the P0108

 

[BigRand]

sounds like you got it covered, I would replace your rear o2 with a new one and possibly use a spark plug spacer to see if you can trick it to not throw the code. Or you could do the sure thing and wire a resistor so it won't throw the code.

 

[Jeff99GS]

Thanks Big Rand, So do you have any Idea why the MAP sensor code is on? Has anyone ever had a MAP go BAD? I wonder if that would make the engine buck? and when I rev it up and then the RPM's comes back down it goes real low like its gunna stall and sometimes it does stall...and I have an automatic..once its settles down it will idle fine but if i rev it up, when the rpms come down that when it wants to stall. Could I have a bad IAC?

I tried to search this and I found one other guy with the EXACT same problem, But he got suspended for having 2 accounts so the thread was never ansewered

 

[BigRand]

Do you have a black box Fuel cut defender installed or a missing link, chances are that is where you are getting your code from as when those items don't work the ecu trips out when it sees positive manifold pressure.

 

[Jeff99GS]

Oh Yeah I have the FCD....so that would throw the CEL. I just can't figure out this idle sputtering thing and I see others are having the same problems but no one has the ansewer. I think that my MAP might be bad but I can't be for sure. I cleaned it out and it got worse the car will barley idle unless i give it gas. once it warms up then i can slowly take my foot off the cas and let it hit idle. I saw in other threads that Paul thinks it might be a "dying ECU". So it could be the ECU the IAC, TPS or MAP.... hahaha I guess I just should change them all. Should a new MAP sensor be $173 dollars??? Does anyone know where I can get a cheaper MAP sensor or how I can Test mine? Cause thats alot of money for a plastic sensor.

 

[VelocitàPaola]

eBay... there's two on there right now for under $20.

 

[Jeff99GS]

Oh damn paul thats a good idea!!!! I didnt think of that.
Do you think the MAP could be bad? The Reason I think it might be is cause I cleaned the MAP and put it back in and now it is even worse....it wont stay runnin uless i give it gas, and when I do give it gas its bucking or surging? So the MAP is the only thing I touched, But I guess it could be the IAC too. I don't like to guess, Is there any way to check the IAC with a Volt/ohm check?

I just tried to start my car and it starts but it will stall unless I rev it up and then it does the surging up and down in the RPM's

 

[Shadow98]

Oh Yeah I have the FCD....so that would throw the CEL. I just can't figure out this idle sputtering thing and I see others are having the same problems but no one has the ansewer. I think that my MAP might be bad but I can't be for sure. I cleaned it out and it got worse the car will barley idle unless i give it gas. once it warms up then i can slowly take my foot off the cas and let it hit idle. I saw in other threads that Paul thinks it might be a "dying ECU". So it could be the ECU the IAC, TPS or MAP.... hahaha I guess I just should change them all. Should a new MAP sensor be $173 dollars??? Does anyone know where I can get a cheaper MAP sensor or how I can Test mine? Cause thats alot of money for a plastic sensor.

You can buy a brand new MAP sensor at AutoZone for about $70. I'm not sure if it comes with a warranty of longer then 90 days though.

 

[Jeff99GS]

Okay I just changed the MAP sensor and that was Definatly the problem. I bought the used MAP off E-bay for $20.00 shipped to my door! I installed it and now it runs fine, so thanks for the help.