BADASS of New England

An automobile club for the enthusiast who enjoys the last of the big GM cars. The rear wheel drive B and D bodys. Chevrolet Impala SS, Caprice, 9C1, Buick Roadmaster, Oldsmobile Custom Cruiser, Cadillac Fleetwood
 
HomeHome  RegisterRegister  Log inLog in  
Log in
Username:
Password:
Log in automatically: 
:: I forgot my password
Who is online?
In total there is 1 user online :: 0 Registered, 0 Hidden and 1 Guest :: 1 Bot

None

Most users ever online was 101 on Fri Nov 27, 2015 1:40 pm
Latest topics
» 2012 and up Caprice PPV
Sat Dec 03, 2016 4:36 pm by No Moa

» I wasn't even looking for this one, I swear!
Thu Dec 01, 2016 9:52 am by 95brmw

» This forum needs a pulse check.... pics included
Tue Nov 29, 2016 1:04 pm by Grumpy

» 1994 Roadmaster Estate Wagon
Tue Nov 29, 2016 10:15 am by lvd2340

» Who're You callin a Turkey?
Thu Nov 24, 2016 1:32 pm by 802

» New Ride
Thu Nov 17, 2016 8:17 am by silverfox103

» Complete SS interior.
Thu Oct 27, 2016 1:35 pm by No Moa

» 2016 9th Annual Roundup, List of Attendees
Tue Oct 18, 2016 1:04 am by MASShole9C1

» Pictures from the 2016 Roundup
Mon Oct 17, 2016 8:03 pm by toomanytoyz

Search
 
 

Display results as :
 
Rechercher Advanced Search
December 2016
MonTueWedThuFriSatSun
   1234
567891011
12131415161718
19202122232425
262728293031 
CalendarCalendar

Share | 
 

 Stumble and surge Any ideas? My head hurts

View previous topic View next topic Go down 
AuthorMessage
IMPALADAKID
Admin


Posts : 1512
Join date : 2009-01-17
Age : 48

PostSubject: Stumble and surge Any ideas? My head hurts   Sun May 04, 2014 9:34 pm

96 OBDII LT1 143k. When I purchased it, it had a fuel temp code. What ever that is. No misfire codes, or any other codes for that matter. Stumble happens after the car has started for about a minute from cold. At light to moderate throttle, it stumbles, and will die. If I can get it to come out of it, she comes alive and leaves endless rubber. But if it dies during the stumble, I have to put the gas pedal to the floor to restart it, as it will not just start back up. Once restarted, it is back to the same. Get over that stumble hump, and she rocks. Also the RPMs are slow to come down, once you get it past that point of stalling. It will sit an idle all day long.

I have replaced the plugs, wires, intake gaskets, EGR, exhaust manifold gaskets, cleaned the TB, and MAF, replaced the air filter, and PCV valve, and oil change, and fuel filter.
Car was sitting for a year or so.
I am sure it is not a bad opti. Based on the way it restarts after stall, I think I am looking at a fuel issue, but not sure. Any ideas?

_________________
2014 Chevrolet Silverado LTZ Z71 5.3 Aluminum V8 (My daily)
2007 Pontiac G6 VL 2.4 I4 (Wife's Daily)
Back to top Go down
silverfox103



Posts : 1475
Join date : 2009-01-25
Age : 21
Location : Littleton, NH & St. Simons Island, GA

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Sun May 04, 2014 9:44 pm

Sounds like your fuel pump is on the way out, atleast that's the symptom that I had.

Tom
Back to top Go down
95brmw



Posts : 1431
Join date : 2009-11-10
Age : 32
Location : Connecticut

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Sun May 04, 2014 9:48 pm

What was the actual code you got? Sounds like the coolant temp sensor isn't working, my 9C1 would do stuff like that at times when the wiring was damaged on my sensor. Start the car and mess with the wiring on the sensor, try unplugging it and see if anything changes.
Back to top Go down
IMPALADAKID
Admin


Posts : 1512
Join date : 2009-01-17
Age : 48

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Sun May 04, 2014 10:06 pm

silverfox103 wrote:
Sounds like your fuel pump is on the way out, atleast that's the symptom that I had.

Tom
I have a new one sitting on the shelf. It sounds like it is time to install it. Thanks

95brmw wrote:
What was the actual code you got?  Sounds like the coolant temp sensor isn't working, my 9C1 would do stuff like that at times when the wiring was damaged on my sensor.  Start the car and mess with the wiring on the sensor, try unplugging it and see if anything changes.
I can not remember other than is said fuel temp, and not coolant temp. I am not getting any current codes but the wire connector to the temp sensor is taped to the sensor, so it is worth a looksee. Thanks.

_________________
2014 Chevrolet Silverado LTZ Z71 5.3 Aluminum V8 (My daily)
2007 Pontiac G6 VL 2.4 I4 (Wife's Daily)
Back to top Go down
Ironfistdog



Posts : 2124
Join date : 2011-01-11
Age : 35
Location : Warren, MA

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Sun May 04, 2014 10:13 pm

Did you try checking the TPS?
What about the idle air control pintle?

I had a problem like this and it ended up being the IAC .

The RPM's coming down slowly is what makes me think a problem with the tps or iac, or maybe even a sticking air foil in the TB (even though it was just cleaned)
Back to top Go down
No Moa



Posts : 3871
Join date : 2009-02-21
Age : 44
Location : Midcoast Maine

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Mon May 05, 2014 12:48 pm

I want to see "endless rubber"
Back to top Go down
http://www.collectorfbody.com
sdstick



Posts : 4278
Join date : 2009-03-20
Location : Revere, MA

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Wed May 07, 2014 8:27 am

Pay attention...... Cool 

IMPALADAKID wrote:

If he took the pic in the other direction you'd see the rubber turn up the street & slowly fade into the sunset...endless...ly

_________________
Steve


96BBB 28K 3.42 Bolt-ons
95BBB 100K 3.73 383 New DD...already broke fixt the 4L60E twice
95 Black WB4 Hole...ee...grail
96 Black WB4 No holes in this
95BBB 189K 3.08 Old DD Stolen...by Matt. Cool
Whine..eee...Silver LS6
Back to top Go down
No Moa



Posts : 3871
Join date : 2009-02-21
Age : 44
Location : Midcoast Maine

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Wed May 07, 2014 8:39 am

Bullsh!t everyone knows a BBB impala can only burn non endless rubber unless the tranny blows up.
Back to top Go down
http://www.collectorfbody.com
tonyc712000



Posts : 126
Join date : 2013-10-04
Location : Ct.

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Wed May 07, 2014 12:46 pm

Stumble and surge....sounds like me 'some' beers.... bounce 
Back to top Go down
toomanytoyz
Club President


Posts : 6870
Join date : 2009-01-20
Age : 40
Location : East Hampstead, NH USA

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Wed May 07, 2014 8:58 pm

So any luck with coolant temp sensor?

_________________
Bill "The Verb" Crovo - Resident Car Slut & Unicorn Hunter

A Toasted Marshmallow, A Long German, A Lame Suburban and expensive dreams...
Missing all my previous B's, D's and V... Sad
American Ricer
www.badassofne.net
"Ooooh! Look! Something shiny!"
NO MORE UNICORNS!!!!!

LOWER IT!!! Wink
Back to top Go down
http://impalass.uniquekind.net/
IMPALADAKID
Admin


Posts : 1512
Join date : 2009-01-17
Age : 48

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Wed May 07, 2014 9:02 pm

toomanytoyz wrote:
So any luck with coolant temp sensor?
I have not touched the car other than to clean it, and wax it. I will disconnect the sensor this weekend, and see if the fans come on. I may just go ahead and replace the pump, and strainer since the car sat so long, and with ethanol, I have no idea what kind of damage that can do to an old fuel system.

_________________
2014 Chevrolet Silverado LTZ Z71 5.3 Aluminum V8 (My daily)
2007 Pontiac G6 VL 2.4 I4 (Wife's Daily)
Back to top Go down
IMPALADAKID
Admin


Posts : 1512
Join date : 2009-01-17
Age : 48

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Fri May 09, 2014 7:39 pm

So today, I started the car. The RPMs are at 1500-1800 at idle, and will not come down. I disconnected the w/p temp sensor, and both fans came on, after reconnect both turned off. I also disconnected the IAC valve, and none of the syptoms changed either way. In fact nothing happened. So I was leaning toward an faulty IAC valve, but I am not sure. Also I have to put the throttle to the floor to get it started after a stall to get it to start. Once started any touch of the throttle will cause it to stumble and die, unless I feather the throttle to get it above 2k rpms.

_________________
2014 Chevrolet Silverado LTZ Z71 5.3 Aluminum V8 (My daily)
2007 Pontiac G6 VL 2.4 I4 (Wife's Daily)
Back to top Go down
Ironfistdog



Posts : 2124
Join date : 2011-01-11
Age : 35
Location : Warren, MA

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Fri May 09, 2014 8:16 pm

My money is still on the IAC.

I wanna say that the impala and caprice have a DIFFERENT part number for this part. I remember asking at the store and they said it was 2 different numbers.
Make sure to ask specifically for an impala IAC.

You can take the iac out of the throttle body and plug it in then have your wife or someone turn the key to ON.
You should see the pintle adjust itself.

I ( against the advice of certain "killers") use my thumb to gently rock the pintle back and forth until it bottoms out. If you can't move it at all then it's J-U-N-K.

No spares to try and swap in ??
Back to top Go down
IMPALADAKID
Admin


Posts : 1512
Join date : 2009-01-17
Age : 48

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Fri May 09, 2014 8:30 pm

Ironfistdog wrote:
My money is still on the IAC.

I wanna say that the impala and caprice have a DIFFERENT part number for this part. I remember asking at the store and they said it was 2 different numbers.
Make sure to ask specifically for an impala IAC.

You can take the iac out of the throttle body and plug it in then have your wife or someone turn the key to ON.
You should see the pintle adjust itself.

I ( against the advice of certain "killers") use my thumb to gently rock the pintle back and forth until it bottoms out. If you can't move it at all then it's J-U-N-K.

No spares to try and swap in ??
No spares.
So I spent a little more time with it to get some real numbers. When I start it, it goes up to 1800 rpm, and comes down to 1000 rpm. If I lightly aply throttle it will go up without stumble. If I push anything other than very lightly the rpms drop to 500, then play catch up. If it dies during a stumble, I have to hold the throttle to the floor. And no matter what, the rpms never drop like they should. They gradually drop, unless it is stumbling. Then they drop like a rock. I am ruling out the IAC, TPS, and temp sensor, as they check to be working properly. Still no CEL

_________________
2014 Chevrolet Silverado LTZ Z71 5.3 Aluminum V8 (My daily)
2007 Pontiac G6 VL 2.4 I4 (Wife's Daily)
Back to top Go down
Ironfistdog



Posts : 2124
Join date : 2011-01-11
Age : 35
Location : Warren, MA

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Sat May 10, 2014 9:42 am

Ok. So let's move onto something new.

The car did this from the day you bought it? Or just started happening?
When you did the intake gasket you hooked everything back up? Like the egr tube and all the vac lines? ( don't laugh I actually forgot to hook up the egr pipe one time)

What about the butterfly's in the tb? Are they free moving? No binding? No carbon on the backside?

The return spring is good on the TB? Not getting hooked on anything?

What about the gas pedal linkage to the tb?
Back to top Go down
IMPALADAKID
Admin


Posts : 1512
Join date : 2009-01-17
Age : 48

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Sat May 10, 2014 8:04 pm

Ironfistdog wrote:
Ok. So let's move onto something new.

The car did this from the day you bought it? Or just started happening?
When you did the intake gasket you hooked everything back up? Like the egr tube and all the vac lines? ( don't laugh I actually forgot to hook up the egr pipe one time)

What about the butterfly's in the tb? Are they free moving? No binding? No carbon on the backside?

The return spring is good on the TB? Not getting hooked on anything?

What about the gas pedal linkage to the tb?
Been doing it since day one. But today I found the issue. After checking the fuel pressure, and finding it to be perfect, I moved on to places I had already looked. Bill and Dave mentioned the ECT in the water pump, but I shrugged it off. I was wrong because that is exactly what it was. Replacing the intake, and exhaust manifold gaskets improved it immensely, but did not fix it totally. But once the new ECT was replaced, all the issues disappeared, and it runs as it should now.

Thanks to everyone for the great advice. Arrow

_________________
2014 Chevrolet Silverado LTZ Z71 5.3 Aluminum V8 (My daily)
2007 Pontiac G6 VL 2.4 I4 (Wife's Daily)


Last edited by IMPALADAKID on Mon May 12, 2014 8:54 pm; edited 1 time in total
Back to top Go down
silverfox103



Posts : 1475
Join date : 2009-01-25
Age : 21
Location : Littleton, NH & St. Simons Island, GA

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Mon May 12, 2014 8:13 am

Dave hit the nail on the head! I guess with all those cars he has, he has a lot of repair experience.

Tom
Back to top Go down
IMPALADAKID
Admin


Posts : 1512
Join date : 2009-01-17
Age : 48

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Mon May 12, 2014 8:08 pm

Yes he did. I kept shrugging it off because I thought with OBD2, the light would have come back on if their was a running issue that bad. And the original code was for low fuel temp. I am not even sure what that means, but now I know where to look if I see it again.
Thanks to everyone for the advise, and jokes. I like jokes. jocolor

_________________
2014 Chevrolet Silverado LTZ Z71 5.3 Aluminum V8 (My daily)
2007 Pontiac G6 VL 2.4 I4 (Wife's Daily)
Back to top Go down
95brmw



Posts : 1431
Join date : 2009-11-10
Age : 32
Location : Connecticut

PostSubject: Re: Stumble and surge Any ideas? My head hurts   Mon May 12, 2014 10:54 pm

Glad you got it going, isn't it really annoying when a tiny part causes all kinds of headaches?
Back to top Go down
Sponsored content




PostSubject: Re: Stumble and surge Any ideas? My head hurts   Today at 3:59 am

Back to top Go down
 
Stumble and surge Any ideas? My head hurts
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
-
» Stumble and surge Any ideas? My head hurts
» I have a stalker/harasser who wont let up. Advice please, my head hurts from dealing with him.
» Cold engine stumble, with drivers little backfire
» First Sculpt: Head Hunter
» Doctor Who Steampunk Ideas?

Permissions in this forum:You cannot reply to topics in this forum
BADASS of New England :: 91-96 B & D-body tech :: Problems / Maintenance-
Jump to: