Very strange fuel related problem.

001Stunna

Well-Known Member
Joined
Oct 21, 2008
Posts
3,203
Reaction score
81
Location
Toronto, ON CANADA
im willing to bet its the map. check your vacuums lines and double check all of the connections you were near when u changed your ignition.

Huh? I'm guessing you don't know that the ignition switch just plugs behind the multiplex unit and behind the key cylinder. There is absolutely no altering any other connections when changing it out aside from taking off the top/bottom steering covers and lower dash cover.

Maybe you should stick to your street-racing vehicle...
 
Last edited:

Frisky Arab

Well-Known Member
Joined
Jan 24, 2011
Posts
691
Reaction score
3
Location
North Houston
Haven't cleaned the MAP sensor. Not sure what TP stands for (Toilet Paper :lawl:). Pretty sure its short for throttle position sensor, but just an assumption. and no I have not cleaned that either.

On a high note, since the seafoam the car hasn't done any knocking, but the idle is still lower then it should be. Seems to me like thats the last problem to fix is to get that idle back up where it should. So much progress since the beginning of this thread! You guys have been awesome.
 

001Stunna

Well-Known Member
Joined
Oct 21, 2008
Posts
3,203
Reaction score
81
Location
Toronto, ON CANADA
Haven't cleaned the MAP sensor. Not sure what TP stands for (Toilet Paper :lawl:). Pretty sure its short for throttle position sensor, but just an assumption. and no I have not cleaned that either.

On a high note, since the seafoam the car hasn't done any knocking, but the idle is still lower then it should be. Seems to me like thats the last problem to fix is to get that idle back up where it should. So much progress since the beginning of this thread! You guys have been awesome.

TP-Throttle Position
Give a clean to the TB(Throttle Body) and butterfly valve. There is a hole on the TB towards the back-upper part. You'll see it if you look at the TB from underneath or you can feel it with your finger. Spray some TB cleaner in there as well. Make sure your butterfly valve is free of gunk. Use your hand to open and close it and spray the back sides of it. Use a rag, spray TB cleaner on it and use it to clean the mating surface of the TB where the butterfly valve closes on. Once done all this put the intake boot back on and give it 5mins. Then start the car. It might be a bit hard to start at first if a fair amount of TB cleaner went down so do not push it or get worried. Once all this is done...

If you can find/borrow/buy(and return) a scanner with live data check the following.

-What is the map sensor showing with the key turned to 2nd position but not on? What does the weather channel say the atmospheric pressure for your location is?...the two values should be the same
-What does map sensor show with the car on idling?
-What does TP show with the car running without touching the pedal?
-Press the pedal slowly and look at the TP values, do they increase gradually or not?
-What does TP show once the pedal is at bare bottom?
-What does it show when you release the pedal at once? Does it hang at all or drop directly?
-Make the scanner graph your front o2 sensor and go for a drive around an area where traffic is light if possible. When you come to a stop look at the graph and notice how long does it take for the O2 to go back to oscillating once it reaches flat top or bottom. It should do it rather fast and not hang.
-Once done the above park the car and let it settle. Make sure the fans are not running, a/c is off, headlights and electronics are off and look on the scanner for what it shows your idle to be. It should be around 700 +/-50
 

001Stunna

Well-Known Member
Joined
Oct 21, 2008
Posts
3,203
Reaction score
81
Location
Toronto, ON CANADA
Like this one? http://www.ebay.com/itm/U581-OBD-OB..._Automotive_Tools&hash=item27cda04b47&vxp=mtr

Thought about buying one a while back, maybe this is my excuse to finally pull the trigger. also, spoke too soon yesterday, car gave me the knocking again this morning on my way to class. Only did it once though, has become less frequent.

Cheapest live data reader i can think of is using torque app for android and an android tablet/phone.
Cheapest tool with faster update rate would be the autel ms509
 

Frisky Arab

Well-Known Member
Joined
Jan 24, 2011
Posts
691
Reaction score
3
Location
North Houston
Huh, that Autel scanner is only like $65. Might just ride this out til next paycheck and buy that scanner as an early Christmas gift for myself, along with the other shopping I'll be doing. You've been awesome man. Wish I could repay you in some way. Can't tell you how much I appreciate it.
 

001Stunna

Well-Known Member
Joined
Oct 21, 2008
Posts
3,203
Reaction score
81
Location
Toronto, ON CANADA
Huh, that Autel scanner is only like $65. Might just ride this out til next paycheck and buy that scanner as an early Christmas gift for myself, along with the other shopping I'll be doing. You've been awesome man. Wish I could repay you in some way. Can't tell you how much I appreciate it.

If you've got the cash i'd tell you to get the MD801 but I am still recuperating the cost of it lolz. The MS509 is decent enough for clearing codes, checking sensor readiness status, live data and graphing.

I require no payment.:beer:
Just don't street race like some other douchebags around.
 

Frisky Arab

Well-Known Member
Joined
Jan 24, 2011
Posts
691
Reaction score
3
Location
North Houston
I love this forum man. You guys are the best. I'm so glad to be learning all this stuff about my car. I wish some of you gurus lived in my area. Only thing my friends know stuff about are 240's, but everyone knows about 240's...
 

Frisky Arab

Well-Known Member
Joined
Jan 24, 2011
Posts
691
Reaction score
3
Location
North Houston
Got me a galaxy S3 a couple days ago with my upgrade. Torque app is installed, OBD connector should be here in a few days. Can provide better information then.
 
Back
Top