My Rough Idle Story, So Far... - Page 3

**Ranger** · #31 (**permalink**) 07-29-08, 10:47 PM

I missed that. Thanks again Sub. Having the check valve in it make me wonder if that is not for the vacuum reservoir.

SuperC · #32 (**permalink**) 07-30-08, 11:56 PM

You guys were right, the part that I bought did go on the 2000 N*! I took the part anyway and used it to cap off the nipple that was covered by the broken piece. New gaskets and coil and she runs like a champion!!! No hesitation, no SES no rough idle!!!!!!

FYI: I had two mechanics look at the part that was broken in a deville that was in the dealership and neither knew what it was or what it did.

I am not to sure how to test the coil. I did read the resistance between coils and got 10.5k ohms on both the new and the old coil. I am going to put the old one back in, just to see if it is the issue. If I can return it to Advance, it saves me $175.

Thank you guys again!!! I could have never done this without ya'll. This is SUCH a great resource.

Thanks,
-C

stngh8r · #33 (**permalink**) 08-05-08, 03:07 PM

Quote:

Originally Posted by SuperC

especially considering that you guys have said it is a PITA.
-C

Really?

I thought it was the easiest V8 plug change I've ever done.

07srt8 · #34 (**permalink**) 08-20-08, 05:42 PM

SuperC

Was it the coil or the gasket?

Thanks

jeffboat1 · #35 (**permalink**) 03-11-09, 10:01 PM

I had the same syptoms and after doing several rechecks it turned out to be the wiring harness that connects to the back set of wires on by the firewall. it appeared to be connected but after pushing down on it i noticed that it was not.

andrewgrahamwebb · #36 (**permalink**) 06-14-09, 11:16 AM

Quote:

Originally Posted by SuperC

You guys were right, the part that I bought did go on the 2000 N*! I took the part anyway and used it to cap off the nipple that was covered by the broken piece. New gaskets and coil and she runs like a champion!!! No hesitation, no SES no rough idle!!!!!!

FYI: I had two mechanics look at the part that was broken in a deville that was in the dealership and neither knew what it was or what it did.

I am not to sure how to test the coil. I did read the resistance between coils and got 10.5k ohms on both the new and the old coil. I am going to put the old one back in, just to see if it is the issue. If I can return it to Advance, it saves me $175.

Thank you guys again!!! I could have never done this without ya'll. This is SUCH a great resource.

Thanks,
-C

Hi,

I have the same problem with my 2000 cadillac sts as you had, but I'm confused about part 567. I have the factory service manual, and in the manual it just shows a rubber cap on the intake manifold where part 567 goes. In your post you said that you didn't need it but used the part to cap off the nipple. Am I correct about this?

Additionally I cant find the plenum on rock auto -- I'm not sure if i need it, but can you buy one from them? I havn't taken the car apart yet, but can the plenum be replaced without taking the intake manifold off? I dont want to buy a second set of seals after the fact.

If you could please let me know, It would really help me out. Thank you,

Andrew Webb