Results 1 to 6 of 6

Thread: Throttle body passage for injector wires

  1. #1
    Fuel Injected!
    Join Date
    Aug 2013
    Location
    Buffalo Gap, TEXAS
    Age
    76
    Posts
    39

    Throttle body passage for injector wires

    I have a throttle body system off a '95 and earlier GM (3 bolt mounted to intake manifold). On the front and top of the throttle body there's a notch in the body where to 4 wires for the injectors go through. There has got to be something like a grommet to seal that notch with the 4 wires in the center. Does anyone have any idea where to get that grommet of make one or ???? In the past I've used "Right Stuff" gasket maker to seal that notch but it makes a mess when I want to remove the throttle body leaving the 4 wires with the engine harness. Ideas????
    I went the the local GM dealership without any luck (the parts guys didn't even have a picture of what I wanted). Napa had nothing more to add.

  2. #2
    LT1 specialist steveo's Avatar
    Join Date
    Aug 2013
    Posts
    4,008
    it's a real thing but i can't find the part number right now.

    im pretty sure in gm parts guides its with the wiring harness instead of the throttle body (the thing isn't really supposed to come off of the harness)

    painless wiring has one on their TBI harnesses when you buy one, so obviously they have them around, i bet if you call them they'd probably mail you one? (it's worked for me before, for odd things)

  3. #3
    Fuel Injected!
    Join Date
    Aug 2013
    Location
    Buffalo Gap, TEXAS
    Age
    76
    Posts
    39
    Quote Originally Posted by steveo View Post
    it's a real thing but i can't find the part number right now.

    im pretty sure in gm parts guides its with the wiring harness instead of the throttle body (the thing isn't really supposed to come off of the harness)

    painless wiring has one on their TBI harnesses when you buy one, so obviously they have them around, i bet if you call them they'd probably mail you one? (it's worked for me before, for odd things)
    Thanks Steve I'll give Painless a call tomorrow. When I purchased this TBI setup many years ago from fly by night outfit that's now out of bussiness they didn't send anything. I used right stuff to plug the hole. Glad to hear there may be a better way to do it. Thanks again.

  4. #4
    Fuel Injected!
    Join Date
    Oct 2013
    Age
    36
    Posts
    88
    It might be easier to get this part from a junkyard as they are found on tbi vehicles from 1987-1995. The issue with that part is the injector wires run through them when they're made so the part by itself is usually not needed. I do see used injector pigtails on eBay that has that part on them for $15 shipped. You may get it cheaper posting a wanted add here or going to a junkyard.

  5. #5
    Fuel Injected! uncabob's Avatar
    Join Date
    Jan 2016
    Age
    86
    Posts
    121
    I had the same problem and also tried the RTV method. Messy!
    Gave up and used old fashioned friction tape.
    Wrapped the wires with a little more than enough to fill the gap then unwrapped a little at a time.
    Works great stays on the wires and fits right back in.
    Don't force it, get a bigger hammer!

  6. #6
    Fuel Injected!
    Join Date
    Aug 2013
    Location
    Buffalo Gap, TEXAS
    Age
    76
    Posts
    39
    Quote Originally Posted by steveo View Post
    it's a real thing but i can't find the part number right now.

    im pretty sure in gm parts guides its with the wiring harness instead of the throttle body (the thing isn't really supposed to come off of the harness)

    painless wiring has one on their TBI harnesses when you buy one, so obviously they have them around, i bet if you call them they'd probably mail you one? (it's worked for me before, for odd things)
    I called Painless (tech) and the guy who answered the phone acted like I was bothering him. "NO" they don't sell that part. I already gave up and used "Right Stuff" and made my own plug. It isn't as pretty but no air will get through.

Similar Threads

  1. Throttle Body Injector (TBI)
    By Billy Bill in forum GM EFI Systems
    Replies: 0
    Last Post: 08-11-2017, 07:47 PM
  2. 7.4 throttle body part#?
    By jimbo in forum GM EFI Systems
    Replies: 2
    Last Post: 01-12-2015, 09:07 PM
  3. holley throttle body
    By bonnieclyde100 in forum Introductions
    Replies: 12
    Last Post: 03-22-2013, 10:21 AM
  4. MPI throttle body options
    By JeepsAndGuns in forum GM EFI Systems
    Replies: 43
    Last Post: 01-19-2012, 03:57 AM

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
  •