V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

Idles high then stalls

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Old May 13, 2005 | 07:35 AM
  #1  
AdmAnt13's Avatar
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From: North Jersey
Car: 1990 Pontiac Firebird
Engine: 3.1 V6 soon to be gone
Transmission: 700r4 Automatic soon to be a T56
Idles high then stalls

I did a search but didnt find much about the V6.

Anyway, only after sitting over night it seems, when I turn on the car, the rpms go way up high, then they go so low the car stumbles and this morning it stalled. Whats the problem? One of my vac lines is broken and is only taped up until I get the new one to replace it, could that be a problem?
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Old May 13, 2005 | 10:34 AM
  #2  
Doward's Avatar
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Yep.
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Old May 13, 2005 | 01:01 PM
  #3  
KED85's Avatar
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From: ****SoCal, USA****
Yep, Yep!
AND if ya really wise for the same effort ya replace all vacuum lines with new stuff.
Ya seek 5/16" windshield wiper hose for repairs, 1/4" same stuff.
Split makes all the hoses & hard plastic lines go together well.
Spend the day, remove the upper intake to access some other ones ya can't get to and enjoy the project. Remove the bolts, rotate & flip toward passenger side. This way works easiest and "nothing" is disturbed.
Best part?
For basically a few dollars, ya get to solve many poor idle problems.
Didn't say low effort, low dollars!
This is a bit of a chore project but returns are mucho great-o!
Oh the poor spanglish!
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Old May 13, 2005 | 01:08 PM
  #4  
AdmAnt13's Avatar
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Joined: Nov 2004
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From: North Jersey
Car: 1990 Pontiac Firebird
Engine: 3.1 V6 soon to be gone
Transmission: 700r4 Automatic soon to be a T56
Thank guys, will fix that line and possibly replace them all.

Oh and KED you crack me up.

Wait one other thing, the vac line itself isnt bad, its the plastic mounting piece that it mounts to. Where can I buy it?

Last edited by AdmAnt13; May 13, 2005 at 01:19 PM.
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Old May 13, 2005 | 06:29 PM
  #5  
KED85's Avatar
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From: ****SoCal, USA****
Since I may not offer the best answer, let me offer guidence.
MANY of the RUBBER holders of the emission vacuum lines, are done by hard plastic lines, inserted into that rubber blocks, which attach to "something" on the engine.
THAT SAID!
TRY
fishing OUT the hard plastic line, and then attaching some more hard plastic line to make a decent connection.
Substitute one hard line for another and try again connecting.
Use of tiny flat blade screw drivers, tiny phillips headed screwdrivers, etc. are the tools that may help FISH OUT the broken plastic.
I had a similar situation on my hard plastic lines & such. It was a bit of a bear, but eventually I got the set up to cooperate again.
I hope this helps.
Kinda wish I had your problem as I just got home after being stranded 3 times due to plastic side tank on radiator developing a crack. I only hope I let my car cool down well enough to not damage motor. Tomorrow I get another radiator a ten minute removal job at the yard and a 45 minute job at home installing it correctly.
I'll take a broken plastic vacuum line any day!!
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