Problem after ported s/c on two cars now.... - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 01-05-2007, 06:29 PM   #1
Senior Member
Posts like a Supercharger
Thread Starter
 
Join Date: Aug 2006
Location: Minnesnowda....
Posts: 198
Thanks: 0
Thanked 0 Times in 0 Posts
'96BonnevilleL67 is on a distinguished road
Default Problem after ported */c on two cars now....

After having my */c ported ('96 SSEi) by OlBlueEyesBonne, my service engine light came on, so I had it scanned and it was throwing 1107 & 107, manifold absolute pressure. Thing is, my idle'* just a little lower than normal, but otherwise there'* no real problem with how it runs. And from what I've been told, it shouldn't run right. Now we just did my friends '98 GTP a couple days ago, and it'* the exact same thing for him, but no real problem with how it runs, besides idleing lower than normal. I don't know what to do. Any help is appreciated.
'96BonnevilleL67 is offline   Reply With Quote
Old 01-05-2007, 08:24 PM   #2
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

There'* gotta be something in common to both. Were these done at the same time? Any chance MAP sensors could have been swapped? Vacuum leaks at the MAP connection? A ground left off?
willwren is offline   Reply With Quote
Old 01-05-2007, 09:47 PM   #3
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

I'd guess a map sensor is unplugged. On the S2'* there are two sensors, they are interchangeable as is the electrical. They should both read identically.

Check the vacuum line from the front of the manifold (by belts) over the valve cover to the sensors and then the electrical connection to both sensors.

Let'* find the issue and make sure Marty knows....we can't have him doing that to everyone.
BillBoost37 is offline   Reply With Quote
Old 01-05-2007, 09:54 PM   #4
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

That was one of my first suggestions via PM when I asked him to post this.
willwren is offline   Reply With Quote
Old 01-06-2007, 12:39 AM   #5
Senior Member
True Car Nut
 
Join Date: Dec 2002
Location: Sauk Centre, MN
Posts: 5,458
Thanks: 0
Thanked 0 Times in 0 Posts
OLBlueEyesBonne is on a distinguished road
Default

Yeah, I was/am very confused and upset by the fact that it happened with both cars. I know it didn't happen with Travis car when we did his. Nor did it do it with my 95 when I did it, but then again that car didn't have a MAP sensor.

Also, I am not sure why, but the W-bodies only got one MAP sensor. I still have the spare one off my GTP engine, so we can swap that on and see if that does the trick on Johnny'* car.
I don't really understand why it did it on both cars.
Both cars DID get coolant in the intake manifold, but Johnny'* 98 GTP didn't get nearly as much in his, but obviously it was too much.
I am just as confused as you guys are....
Dan, if you come to Sauk Centre for the LIM, let me know ahead of time and we can check vacuum line routing and verify it is correct by looking at my brothers 97 SSEI (yeah, it'* missing 1 line from the TB to the trans but that'* not the problem area -all the other lines will be routed the same as your 96). But don't come tomorrow before 3-4PM (I'm in Devils Lake, ND picking up my 1964 Chrysler New Yorker Salon 4 Dr Hdtp) as I won't be home before 2 at the earliest and I have to clean out a space in my brothers garage to park this beatiful 1-owner, rust-free, car that only has 1,620 copies and alot less than that are actually left now.

Anyhow, yeah, we definitely have to figure this out.
OLBlueEyesBonne is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
What happens when two old gearheads get together after WCBF? SSE Motorhead General GM Chat 5 08-02-2007 02:01 PM
PICS!! Ported GEN III M90 until spring, then ported GEN V OLBlueEyesBonne Forced Induction 20 10-13-2006 03:55 AM
Two for sale sections - one for parts and one for cars VigCS Forum updates and suggestions 9 01-25-2006 04:48 PM
After sitting for a day or two, battery dies. Smoof 1992-1999 7 05-11-2005 02:43 AM
DP now offering Series I ported manifolds?!?!?! 1993 SLE Performance, Brainstorming & Tuning 9 12-19-2004 05:41 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:46 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.