Joined
·
107 Posts
Limp Mode Lite, Half Boost, and P2188. (Freeze frame data in page two!)
(Discussion and help needed!)
Oh yeah! This is gunna be a fun thread! And hopefuly helpful for anyone else that may come up against this ruthless code, that seems to plague A LOT of cars.
And probably really long too, I'll throw in some cliff notes in at the end to spare some of you from having to read it all.
So my 07 Sky RL has been suffering from P2188(to rich at idle) off and on for months. I believe I had a misfire code at one point, but I believe I solved that with new spark plugs.
My Sky has the GMPP tune, magnaflow exhaust, fujita intake and ic pipes. I believe the code started after the ic pipe install, back during march, but not right away, maybe acouple months later? At this point I was DDing my Sky. So I never assumed it was the IC pipes. But I'll come back to this.
So I pop p2188, and I get half boost, well less, 9psi. After a lot of searching I realized that this is because I'm being thrown into LIMP MODE LITE, which allows only mechanical boost, normally thats 6psi or so? The previous owner is responsible for most of the mods on the car so I'm assuming he may have done the WASTEGATE MOD, for extra Boost, hence why I get 9psi in Limp Mode Lite. And I know this is Limp Mode and not a leak is because if I clear the code, I have FULL BOOST again until the next time I start up the car or soon before the code returns.
Right?
Now this code comes and goes, some days I'll start up the car and have full boost and its gone the next time I start it or let it sit and idle after driving it. But this is rare, it'll be like once every 3 weeks or so. Sometimes the code even clears itself but comes back very quickly.
The interesting thing with this is, everyone else I've read about having p2188 says nothing about half boost or limp mode, how is it just happening for me?
So doing my research, this code is really common with Mazda speeds and Mini S' and extremely hard to pinpoint and fix just like with these cars...
the things I've done so far:
New spark plugs (Double platinum autolite(I think thats the brand) Mind you the code came and went on the Delcos that were in it before.
Checked the purge valve, working just fine.
3bar sensor wiring, took out the crimp connectors, I should have soldered it but I twisted them up and heat shrink tubed them.
Cleaned the Maf and Map sensor, I think I sprayed the Maf connector too.
Seafoamed the car, and gas treatment.
Interestingly enough, I was on the toilet and the closest thing in reach to read was the Maf Cleaner can, it was tested at R/T Tuning, in Lansdale, PA. doesn't mean much to some of you guys, but that place is just around the corner from me, and very reputable! When I first got my car they contacted me and told me they just did a turbo swap and dyno tune on a Sky RL, so if I can't figure this out its most likely going to end up at their place! Go figure lol.
Now, the last thing I want to try, going back to the IC pipe discussion, is putting the stock ones back on. Seeing how the last thing I did before this started was put the intercooler pipes on, but as I also said it happened months later.
I did replace the clamps with T-bolts and the couplers with silicone ones.
My last guess is it could be a leaky injector?
And worst case my turbo is shot... I have thought that maybe I have a slight crack in the intercooler that could be throwing off the readings and freaking the car out. It's definitely not ballooned up, but could be cracked since I haven't checked the end tanks yet.
Possibly needs a retune?
So, any suggestions?
I'm so baffled by this...
Now that my wagon is back on the road I need to tackle this code!
*cliff notes!*
Car has p2188
Causing LIMP MODE LITE, cause half boost at 9psi.
Replaced and cleaner various parts, nothing has worked.
Code comes and goes, Do not think its a leak.
Retune?
Heartbroken
Need help
Thanks guys!
Hans -
Discuss!
(Discussion and help needed!)
Oh yeah! This is gunna be a fun thread! And hopefuly helpful for anyone else that may come up against this ruthless code, that seems to plague A LOT of cars.
And probably really long too, I'll throw in some cliff notes in at the end to spare some of you from having to read it all.
So my 07 Sky RL has been suffering from P2188(to rich at idle) off and on for months. I believe I had a misfire code at one point, but I believe I solved that with new spark plugs.
My Sky has the GMPP tune, magnaflow exhaust, fujita intake and ic pipes. I believe the code started after the ic pipe install, back during march, but not right away, maybe acouple months later? At this point I was DDing my Sky. So I never assumed it was the IC pipes. But I'll come back to this.
So I pop p2188, and I get half boost, well less, 9psi. After a lot of searching I realized that this is because I'm being thrown into LIMP MODE LITE, which allows only mechanical boost, normally thats 6psi or so? The previous owner is responsible for most of the mods on the car so I'm assuming he may have done the WASTEGATE MOD, for extra Boost, hence why I get 9psi in Limp Mode Lite. And I know this is Limp Mode and not a leak is because if I clear the code, I have FULL BOOST again until the next time I start up the car or soon before the code returns.
Right?
Now this code comes and goes, some days I'll start up the car and have full boost and its gone the next time I start it or let it sit and idle after driving it. But this is rare, it'll be like once every 3 weeks or so. Sometimes the code even clears itself but comes back very quickly.
The interesting thing with this is, everyone else I've read about having p2188 says nothing about half boost or limp mode, how is it just happening for me?
So doing my research, this code is really common with Mazda speeds and Mini S' and extremely hard to pinpoint and fix just like with these cars...
the things I've done so far:
New spark plugs (Double platinum autolite(I think thats the brand) Mind you the code came and went on the Delcos that were in it before.
Checked the purge valve, working just fine.
3bar sensor wiring, took out the crimp connectors, I should have soldered it but I twisted them up and heat shrink tubed them.
Cleaned the Maf and Map sensor, I think I sprayed the Maf connector too.
Seafoamed the car, and gas treatment.
Interestingly enough, I was on the toilet and the closest thing in reach to read was the Maf Cleaner can, it was tested at R/T Tuning, in Lansdale, PA. doesn't mean much to some of you guys, but that place is just around the corner from me, and very reputable! When I first got my car they contacted me and told me they just did a turbo swap and dyno tune on a Sky RL, so if I can't figure this out its most likely going to end up at their place! Go figure lol.
Now, the last thing I want to try, going back to the IC pipe discussion, is putting the stock ones back on. Seeing how the last thing I did before this started was put the intercooler pipes on, but as I also said it happened months later.
I did replace the clamps with T-bolts and the couplers with silicone ones.
My last guess is it could be a leaky injector?
And worst case my turbo is shot... I have thought that maybe I have a slight crack in the intercooler that could be throwing off the readings and freaking the car out. It's definitely not ballooned up, but could be cracked since I haven't checked the end tanks yet.
Possibly needs a retune?
So, any suggestions?
I'm so baffled by this...
Now that my wagon is back on the road I need to tackle this code!
*cliff notes!*
Car has p2188
Causing LIMP MODE LITE, cause half boost at 9psi.
Replaced and cleaner various parts, nothing has worked.
Code comes and goes, Do not think its a leak.
Retune?
Heartbroken
Need help
Thanks guys!
Hans -
Discuss!
