Thread: Introduction and first question

Results 1 to 5 of 5
  1. #1 Introduction and first question 
    SE Level Member
    Join Date
    Aug 2014
    Location
    Sacramento
    Posts
    4
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Chats
    0
    Hey guys,

    The name is Justin I'm out of Sacramento and am driving a 2000 GTP, Supercharged bone stock. She's got about 190,000 miles on her. I love love driving my car so much that I drive for the ridesharing company Lyft, the pink mustaches. My passengers love my car as well. I'm also a graphic designer.

    So I've been following this forum for about a year now up untill this point I have had all my Grand Prix problems solved and I wanted to thank you all for this!

    Recently my car started running really rough, it started while idling now it has gotten to the point to where now while in motion it runs like crap. My car did throw two codes, P0203 and a P0303. I know that this is a fuel injection problem so I am guessing this is where my misfire is coming from.

    Here's what I found I have done so far... First I checked all the connections and everything was nice and tight, no loose harness and no visble tears in the wires. Second I moved the injectors around to see if I could isolate the problematic injector but the problem stayed on the third cylinder, I moved it back. Lastly I picked up a noid light tester and it was giving off a signal, I checked em all to be sure. But here is where things started to get complicated....I noticed over the last few days that when I start my car in the morning and head off to work, the car runs excellent. It's not until I drive the car for a few miles it starts running rough. The car now, when going over 2000 rpm, starts shaking and the SES light starts blinking. But this is only after the car warms up. So I did the noid light test again after a cold startup and it was giving signal, I waited till the car warmed up and tested the no. 3 injector connection and sure enough it wasn't blinking at all.


    I have no idea where to go from here. I'd really appreciate any help I can get!

    Thanks!!!!
    Reply With Quote  
     

  2. #2 Re: Introduction and first question 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,952
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    Chats
    238403
    could be a clogged cat or you desperately need a tune up.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  3. #3 Re: Introduction and first question 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
    Join Date
    Sep 2009
    Location
    Rogers, MN
    Posts
    21,030
    Thanks (Received)
    21
    Likes (Received)
    45
    Dislikes (Received)
    0
    Chats
    83662
    Quote Originally Posted by Scottydoggs View Post
    could be a clogged cat or you desperately need a tune up.
    Neither of those explain why power from the numbe 3 injector goes away, did you even read this thread?

    SMGPFC Member #1
    Reply With Quote  
     

  4. #4 Re: Introduction and first question 
    Turbo is the way to go. BillBoost37's Avatar
    Join Date
    Jul 2009
    Location
    W Spfld
    Posts
    26,833
    Thanks (Received)
    53
    Likes (Received)
    90
    Dislikes (Received)
    1
    Chats
    98246
    There are two wires going to each injector. Constant power (with ignition on) and the pcm sends a ground. Power should be a pink wire that is split to each injector. When you have the condition start, turn the engine off with ignition on and check the connector's pink wire for power. Likely you have power. This would mean that you have a break in the grounding wire from the pcm. Start removing the loom and find the break in the wire then repair and replace the loom.

    Should be a straightforward fix. Hope that helps.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
    Reply With Quote  
     

  5. #5 Re: Introduction and first question 
    SE Level Member
    Join Date
    Aug 2014
    Location
    Sacramento
    Posts
    4
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Chats
    0
    Hey thanks for the help guys! So I found my issue, it was a break in the wire.

    When I first got my car I had an issue with the coolant level sensor always reading low. So I found a short in my harness where the wire broke from rubbing against the radiator cap. I repaired it but the sensor never did work.

    Turns out that it wiggled it's self loose and it was actually my injector wire.

    Problem solved!

    Thanks again!
    Reply With Quote  
     

Similar Threads

  1. New Member - Introduction and Question
    By theTRUTH in forum Introductions/Noob Questions
    Replies: 1
    Last Post: 07-19-2013, 11:36 PM
  2. Introduction and a question.
    By CycoPuppet in forum Introductions/Noob Questions
    Replies: 24
    Last Post: 05-10-2013, 06:12 PM
  3. Introduction and quick question
    By Frank Eldridge in forum Introductions/Noob Questions
    Replies: 0
    Last Post: 07-20-2012, 01:04 AM
  4. Introduction
    By 3CLiPSE in forum Introductions/Noob Questions
    Replies: 4
    Last Post: 07-24-2011, 11:39 AM
  5. Introduction
    By zigzag in forum Introductions/Noob Questions
    Replies: 10
    Last Post: 03-11-2009, 05:10 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •