Buick When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

99 century ignition problems

Thread Tools
 
Search this Thread
 
Old Dec 9, 2024 | 10:52 AM
  #1  
Blfontana51's Avatar
Thread Starter
Junior Member
Posts like a Ricer Type-R
 
Joined: Jul 2024
Posts: 13
Likes: 13
Blfontana51 is on a distinguished road
Default 99 century ignition problems

Ive been chasing an ignition problem for a while now, changed crankshaft sensor then coil packs all worked well for a while, then it wouldn't start in the mornings but it would in the afternoon. took it to a local shop they said they cleaned the icm, worked well again until last week, so i cleaned it again but it still was doing the same thing so i replaced with a new one and its still giving me problems, I've noticed tho that if i wiggle the wires on the one connector it'll start up. so i don't know how to go about fixing this, i cant seem to find the right part or wire harness for this, can anyone help? Its the one with 4 wires
Reply
Old Dec 9, 2024 | 06:12 PM
  #2  
carfixer007's Avatar
Senior Member


True Car Nut
 
Joined: Dec 2018
Posts: 3,239
Likes: 1,597
From: Flint, MI USA
carfixer007 is on a distinguished road
Default

Clean the ICM? How?
Look at the male and female pins for the connectors. See green?
Reply
Old Dec 9, 2024 | 08:57 PM
  #3  
Blfontana51's Avatar
Thread Starter
Junior Member
Posts like a Ricer Type-R
 
Joined: Jul 2024
Posts: 13
Likes: 13
Blfontana51 is on a distinguished road
Default

I'm not sure what they did hah but no green?
Reply
Old Dec 9, 2024 | 11:57 PM
  #4  
CathedralCub's Avatar
Senior Member


True Car Nut
 
Joined: Feb 2015
Posts: 6,809
Likes: 1,006
From: Earth
CathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to behold
Default

Sounds like a damaged connector.

I bet it'* one of these:

https://www.rockauto.com/en/moreinfo...77042&pt=10623

https://www.rockauto.com/en/moreinfo...77042&pt=10623

. . . found at: https://www.rockauto.com/en/catalog/...onnector,10623

Verify new plug exactly matched old plug before getting to work.

I recommend this be soldered on properly, not crimp-connected on.
Reply
Old Dec 10, 2024 | 11:58 AM
  #5  
Blfontana51's Avatar
Thread Starter
Junior Member
Posts like a Ricer Type-R
 
Joined: Jul 2024
Posts: 13
Likes: 13
Blfontana51 is on a distinguished road
Default

Thanks, i think i found the right one its a 6 pin.
Reply
Old Dec 10, 2024 | 07:51 PM
  #6  
carfixer007's Avatar
Senior Member


True Car Nut
 
Joined: Dec 2018
Posts: 3,239
Likes: 1,597
From: Flint, MI USA
carfixer007 is on a distinguished road
Default

If no green just close the pins.
Reply
Old Dec 10, 2024 | 07:59 PM
  #7  
Blfontana51's Avatar
Thread Starter
Junior Member
Posts like a Ricer Type-R
 
Joined: Jul 2024
Posts: 13
Likes: 13
Blfontana51 is on a distinguished road
Default

What does that mean?
Reply
Old Dec 10, 2024 | 08:59 PM
  #8  
carfixer007's Avatar
Senior Member


True Car Nut
 
Joined: Dec 2018
Posts: 3,239
Likes: 1,597
From: Flint, MI USA
carfixer007 is on a distinguished road
Default

You need to manipulate the pins with a pick tool to get them to have a tighter handshake.It'* called pin tension. How well they grab each other.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
WillEP
Buick
25
Jun 19, 2021 09:21 PM
kendrwil
Buick
9
Jun 17, 2020 09:44 PM
Cygnusia
1992-1999
6
Sep 24, 2009 04:51 PM
csrc
1987-1991
1
Dec 31, 2006 07:00 PM
wvdanceguy
1987-1991
12
Nov 16, 2003 09:26 AM




All times are GMT -4. The time now is 08:54 AM.