No idea what this problem is
#42
Staging Lane
Join Date: Sep 2006
Location: Springhill, LA
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
You obviously dont know how these cars work. Now that thats out of my system you do understand that just because you smell fuel means nothing. You have a rough idle right you have voltage problems right. If its missing or something is affecting your idle then your going to smell fuel if its missing or overfueling due to something messing with your pcms inputs and outputs. If you have something causing you to get a messed up 5v ref then whatever it is causing that problem is most likely your culprit, whether it be a broken or chaffed wire or something else. Now you can take that advice and build on it and ask more questions Ill be more than happy to answer them. Or keep doing what your doing by throwing parts at it.
#43
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
You obviously dont know how these cars work. Now that thats out of my system you do understand that just because you smell fuel means nothing. You have a rough idle right you have voltage problems right. If its missing or something is affecting your idle then your going to smell fuel if its missing or overfueling due to something messing with your pcms inputs and outputs. If you have something causing you to get a messed up 5v ref then whatever it is causing that problem is most likely your culprit, whether it be a broken or chaffed wire or something else. Now you can take that advice and build on it and ask more questions Ill be more than happy to answer them. Or keep doing what your doing by throwing parts at it.
#45
TECH Resident
iTrader: (3)
Join Date: Mar 2008
Location: Joliet Illinois
Posts: 965
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
At the end of the tree of electical problems the last step is change out the pcm. They can go bad. Unlikely but can happen. If you changed out everything out on the circuit and it still has the problem you may need a Pcm if you have anyone close you could switch it out with to see I would do that.
#46
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
At the end of the tree of electical problems the last step is change out the pcm. They can go bad. Unlikely but can happen. If you changed out everything out on the circuit and it still has the problem you may need a Pcm if you have anyone close you could switch it out with to see I would do that.
#48
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Yeah! It is about a 40MB file though so I am reuploading it ATM, so I will post when it finishes. Here is the one of the 5v ref circuit 1 though. Thanks for the support ![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
http://www.gearchatter.com/si/582390.png
EDIT: Full diagram available at http://rapidshare.com/files/289220007/Diagram.zip.html
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
http://www.gearchatter.com/si/582390.png
EDIT: Full diagram available at http://rapidshare.com/files/289220007/Diagram.zip.html
#49
TECH Addict
iTrader: (9)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I had a friend that had a similar issue. I was told by a tuner to tap the mass air meter while the car was running and if it started to die then the maf was bad. Funning thing was it work, I dident belive at all we started the car and tap on the top of the maf it stumbled and died, we did it three times too.
#50
TECH Resident
iTrader: (3)
Join Date: Mar 2008
Location: Joliet Illinois
Posts: 965
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Ok with the egr what did you do to the connections after you removed it and tunned it out? Its worth a shot looking at them as they could still mess with it if they ground somewhere. I dought it is it but worth a shot
#53
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
After doing a throttle relearn, I decided to go over my vacuum system. I noticed after I removed my AIR system, I left some part on the right side of the fuel rail that had two vacuum hoses plugged into one undone. Well I left one vacuum hose undone (removed with AIR pump). Capped that, did the relearn, went over the vacuum system again and it runs brilliantly... Weirdest thing ever. All codes are gone and idle is DEAD perfect.
#54
Staging Lane
Join Date: Sep 2006
Location: Springhill, LA
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Very well stated kdick. Now on to the help part you did state that you tested the injectors and they did not bleed down correct, you stated in the thorough explanation of how well you understand these cars that you got inconsistent pressure bleed off. Sir inconsistent information does not help in online diag. If you were getting inconsistent readings then yes the injectors could be suspected. A simple way to check the injectors would be use a mechanics stethoscope and listen to the injectors and see if they sound similar to one another, that would let you know that the 'multi position pin' know as a pintle was not operating correctly. That may be something to do with your p0200 but I still dont think with my tiny little UTI and Ford Electrical and Electronics training and several years as a driveability tech, that it is going to have an effect on something that is not even on the same circuit as the problem you are receiving the p1635 per the information you provided is correct, not questioning your ability but I have seen flaws on manuals and wiring diagrams before. Hope your injectors fix you up best of luck keep us posted.
#56
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Well only once did it bleed to zero, but all other times it was just low (below 30PSI). But yeah after doing that throttle relearn, it is running a load better and I went over my vacuum system and just by unplugging, checking for dry-rot, and so-on I think it fixed a minor leak somewhere. Idle came way down (about 500RPM), but she still wants to surge a bit. All codes magically disappeared. I'm thinking the TPS was the culprit, but the injectors were cheap and under warranty so I will be replacing those soon. Lol, good to know there are knowledgable people here. Sorry to snap, but I'm sure with all your experience, you know how frustrating these things get. I appreciate the input!! Thanks!
#58
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Awesome, the problem is back again. It took several cranks to start and idles horrid. Surges from 600RPM to 1200RPM and eventually idles close to 1000RPM. It threw the codes P0102, P0200, and P1635. It is like it has a BAD vacuum leak. Reset the codes and restarted the car. It will only throw codes when cold. If you have any advice, you have NO idea how much I would appreciate it.
#59
Staging Lane
Join Date: Sep 2006
Location: Springhill, LA
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Lol figured you would be back in a day or so to say that hard to believe that a vacuum problem will cause an electrical issue. Whats your p0102 description? Do you have access to a live data scanner?