Why is my engine running so odd now? throwing a code 71 EGR

[OfnaRcR4]

Well that damn annoying to replace coolant hose in the front of the engine under the t-stat exploded on me again so i went ahead and changed it out. In the process i disconnected all the connectors in the way, moved the ps reservoir and bracket and took out what i'm assuming is the cps(black covered thing right next to the reservoir). Now that it's all back together it's running really rough. Stays running but barely. Checked the codes and i get a 34 (turbo pressure) which i've had for a while but it hasn't effected drivability. Also got a new code, 71 which has something to do with the EGR system. I really don't think i even touched anything near any EGR stuff so i'm baffled? During the process i cleaned some of the connectors with brake clean but i'm sure they're dry by now? Any ideas?

 

[89supra7mgte]

Your cps may be a tooth off? not sure if the egr code will cause drivability unless it is stuck open for reason? check and make sure your cps is aligned properly. did you ever pull the cover off? if you did not chances are its not in proper

 

[jetjock]

Me thinks you screwed up putting the CPS in. You know, the part you removed after being unsure of what it was.

The EGR code is because your EGR isn't working.

I won't get into the code 34 thing. Let someone else handle it.

edit: beaten by 89...

 

[OfnaRcR4]

Well crap. I've tried searching and i'm still a bit confused. How do i adjust the CPS after i've installed it correctly?

 

[mkiiichip]

Start here.
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=IG&P=21

 

[Poodles]

EGR code is because it's not detecting the proper temp, if it's running like shit and the timing is way off from the CPS being installed wrong it's a possibility that the EGR code will go away once it's fixed.

 

[Nick M]

Well crap. I've tried searching and i'm still a bit confused. How do i adjust the CPS after i've installed it correctly?

You don't adust. If it is off a tooth, it is not installed correctly. After you install it correctly, you can check for build up inside the EGR tubes. But maybe you shouldn't.

 

[OfnaRcR4]

Tried all that last night but everytime i put the cps in the gear kept moving when i was putting it in. I'll have another go at it in a bit.

 

[89supra7mgte]

Here is how it should when installed correctly. had the same problem at one time

http://www.supramania.com/forums/showthread.php?107681-cps-install

Post #2

 

[Nick M]

If you see it slide one gear when you install it, then maybe you should try a little Kentucky windage.

 

[IwantMKIII]

Obviously your timing is way off. You need a timing light to do this job properly. It can run very rough even if you are on the right tooth of the CPS if its not adjusted correctly.

 

[OfnaRcR4]

Thanks everybody for the feedback! Turns out the TSRM was just confusing me on the whole TDC thing when it said to look for the lobe in the oil cap. Finally pulled the timing cover and got it to TDC and installed the CPS in the same position that it was in before and the car runs fine now. Thanks for all the help!

 

[89supra7mgte]

My guess is that it might have been a tooth off or a few degrees, if after reinstalling on tdc it runs good