Corvair DiagramCorvair Photo
Corvair Center
home forum corvairs calendar links Corvair Podcast
California Corvairs
Clarks Corvair
Clarks Corvair
“CORSA"



Chevy Corvair License Plate
Chevy Corvair Chrome Wheel
Corvair Center Forum :  Corvair Center Phorum The fastest message board... ever.
Corvair Center 
Pages: 12Next
Current Page: 1 of 2
OT - 2009 Cadillac CTS issue
Posted by: cepak ()
Date: January 11, 2018 11:01AM

When I got home from work last night, my wife told me that her car wouldn't start.
It is a 2009 Cadillac CTS with a 3.6L Direct Injection V6, and she hadn't
driven it in over a week. It has 54,000 miles, always maintenance at the
dealership, and is kept in the garage (no vermin chewing on wires).

She gave me the keys and I tried it myself. The engine would try to start, but
would then sputter, then die. No dummy lights on the instruments were on, but
there was a slight smell of fuel in the garage. I tried starting it again and
it wouldn't start.

I went and got my laptop with OBDII software loaded and the OBDII USB
connector, and started to look for diagnostic trouble codes. No codes were
listed. I thought that maybe the software and USB connector might not be
working properly, so I then connected the setup to my 2014 Camaro SS, and
cranked it up. The software worked perfectly and I was able to read
everything from O2 sensors, MAF sensor, fuel pressure, etc.

So I went back to the CTS and tried again. Still, no diagnostic trouble codes.
With the OBDII stuff plugged in, I tried cranking the CTS again. After about
15 seconds of cranking, the engine sputtered to life, ran rough for about a minute,
then went back to normal operation. I looked for diagnostic trouble codes, but
there was still nothing. I used the OBDII software to have the CTS initiate
a self diagnostic. After the OBDII software showed the diagnostic complete,
I looked for diagnostic trouble codes, and again nothing. I drove the
CTS around for about 20 minutes with the software running, and it seems to be
back to running normal.

I drove the CTS to work today and had my laptop connected and logged all of the
sensor information for the duration of the trip. It seemed to be running normally.
I will look at the data when I get home, but I know that no diagnostic trouble codes were set.

I don't want to take it into the dealership yet as I know I would be throwing
money at a problem they won't find.

Anyone have a suggestion as to where to start?


Tom Cepak
DFW, TX

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: Jim's Wife's 64 ()
Date: January 11, 2018 11:05AM

Our SRX did that and ended up being the battery, if you can believe it. Sad that it doesn't have a key, so we didn't know if it was the fob battery or what. Ended up being the car battery.

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: cepak ()
Date: January 11, 2018 11:08AM

I wouldn't think it is the battery since I had it replaced this past summer. Plus
the starter was turning the engine over pretty quickly.


Tom Cepak
DFW, TX

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: MattNall ()
Date: January 11, 2018 11:29AM

Had to have been low fuel pressure or flow...

Might be just a design anomaly?





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: cepak ()
Date: January 11, 2018 11:34AM

Hmm, I'll have to check the maintenance records and see when/if the dealership
has ever replaced the fuel filter.

With the smell of fuel in the garage, do you think I could have gotten some bad
fuel?


Tom Cepak
DFW, TX

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: larry202br ()
Date: January 11, 2018 11:55AM

you said "...I tried starting it again and
it wouldn't start." wouldn't turn over at all? or turned at regular speed, with no start?
How old is the battery?
Can your OBDII software measure battery voltage during cranking?
Can it measure fuel pressure, KOEO, during crank and running?

Also, what software and OBDII interface are you using?

1961 rampside with a 65 / 67 110 engine, car four speed.
Now I have 1965 convertible as well, got it running in June, autocrossed in July 2016 at the convention!

KC0SKX
Olathe, ks
HACOA

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: cepak ()
Date: January 11, 2018 12:09PM

Sorry, it turned over at regular speed but didn't start.

The battery is 8 months old.

Yes.

Yes and yes,

Toad Pro

It scans everything except ABS, SRS, Brakes, or Airbags.


Tom Cepak
DFW, TX



Edited 2 time(s). Last edit at 01/11/2018 12:12PM by cepak.

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: Seth Emerson ()
Date: January 11, 2018 12:11PM

The dealer's Tech Box can probe a bit deeper than most our OBDII readers, including history. Lots of things in the computer are available - but not to us. In my mind any fuel smell -although probably from unburned gas going through, not any kind of leak - says take it to the dealer. If only for your piece of mind.

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: vairsUPnorth ()
Date: January 11, 2018 12:18PM

Hello Tom,

I suppose you have been getting the same cold weather the rest of us have suffered through. Could this have been something as simple a a bit of water in the gasoline [which would combine with the ethanol] due to condensation?

Dale Dewald
Hancock, MI

Attachments:
Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: cepak ()
Date: January 11, 2018 12:23PM

Yes we have and that could be a possibility. I should probably pick up some sta-bil as well.


Tom Cepak
DFW, TX

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Date: January 11, 2018 12:25PM

Maybe the float level? grinning smiley or perhaps the points? smoking smiley

Seriously.
I would ask about issues with my Cadillac on modern Cadillac Forums

Plenty of similar "issues" noted and discussed.

When I have a problem with my Chrysler T&C, I read the Chrysler Minivan Forums.


Dan Davis ~ Pierce County, WA ~ CORSA Western Director + Corvairs NW + North Cascades Corvairs + Corvanatics
1966 Corsa Turbo coupe ~ ~ 1966 140 Corsa ~ ~ 1965 Monza 140/4 'Vert Sierra Tan/Fawn ~ 1964 Monza 'Vert (SOLD) ~ 1960 Monza Ermine White/Red PG ++ ~ 1965 Monza 140/4 Evening Orchid w/ ivory/black interior ~ 1962 Monza Wagon 102/4 ~ 1963 Rampside/Scamper ~ 1963 Red/Greenbrier ~ 1969 Ultra Van #468

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: Richard ()
Date: January 11, 2018 01:56PM

>>Maybe the float level?<<

might not be that funny. How much fuel in the tank?

Cracked and leaking oversize plastic pumps on the newer cars isn't uncommon. Some leak fuel from splashing around. Some leak around the outlet tube.
The Cad repair requires removal of rear suspension, exhaust, drive shaft and tank to replace the $400 pump.
The newer Chrysler/Dodge has holes with removable covers under the rear seat to make it a much easier repair.

Tons of Utube videos of guys cutting a hole under the seat of late Cads in order to replace the pump.



Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: Frank DuVal ()
Date: January 11, 2018 01:59PM

If you can read fuel pressure, did you read it during the no start?

My first test is fuel pressure, as without fuel, it will not start, and it will not set any codes.

Frank DuVal

Fredericksburg, VA

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: joelsplace ()
Date: January 11, 2018 02:35PM

I had an '04 CTS not direct injected but when the battery got low it would seem to crank faster but not fire like an engine with a broken cam belt/gear/chain. It seems like It would run rough for a few seconds when it would start after the battery was low. I got used to the low battery/fast crank and knew I would need to put a charger on it.

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: irfgt ()
Date: January 11, 2018 03:52PM

You cannot start these vehicles and shut them off without letting them warm up first especially in cold weather. They will flood out and misfire until the plugs clean themselves. There is probably nothing to be found by anyone if this is the case.I see this happen many times in the winter. If they flood simply hold the accelerator to the floor and start it.

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: Frank DuVal ()
Date: January 11, 2018 06:45PM

I do find it interesting that the programmers of EFI systems did include the "clear flood mode" in their program, so that it mimics an action of a carburetor!smileys with beer

Frank DuVal

Fredericksburg, VA

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: cepak ()
Date: January 12, 2018 11:29AM

I just got back from taking the CTS to the dealership. $175 for having them run their diagnostics, and they couldn’t find any problems. I guess I’ll have to wait until it happens again, not try and start the car, and have it towed to the dealership for diagnostics. At least I got a free oil and filter change out of it.


Tom Cepak
DFW, TX

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: larry202br ()
Date: January 12, 2018 11:38AM

hopefully, you can be setup to record battery voltage during cranking,
and fuel pressure, KOEO, during crank and running.

1961 rampside with a 65 / 67 110 engine, car four speed.
Now I have 1965 convertible as well, got it running in June, autocrossed in July 2016 at the convention!

KC0SKX
Olathe, ks
HACOA

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: Chris Lampe ()
Date: January 12, 2018 01:14PM

cepak Wrote:
-------------------------------------------------------
> I just got back from taking the CTS to the
> dealership. $175 for having them run their
> diagnostics, and they couldn’t find any
> problems. I guess I’ll have to wait until it
> happens again, not try and start the car, and have
> it towed to the dealership for diagnostics. At
> least I got a free oil and filter change out of
> it.

Hey Tom,

That oil change wasn't free it was $175 confused smiley

Chris
Rowlett, Tx
NTCA - North Texas Corvair Association
CORSA
'64 Monza 'vert

Options: ReplyQuote
Re: OT - 2009 Cadillac CTS issue
Posted by: Brizo ()
Date: January 12, 2018 03:52PM

Chris Lampe Wrote:
-------------------------------------------------------
> cepak Wrote:
> --------------------------------------------------
> -----
> > I just got back from taking the CTS to the
> > dealership. $175 for having them run their
> > diagnostics, and they couldn’t find any
> > problems. I guess I’ll have to wait until it
> > happens again, not try and start the car, and
> have
> > it towed to the dealership for diagnostics. At
> > least I got a free oil and filter change out of
> > it.
>
> Hey Tom,
>
> That oil change wasn't free it was $175 confused smiley

The best two things that can happen are that it will either go away, or get worse so it can be diagnosed! A standard OBDII scan diag at the GM dealer where I work is a approximately $100 so I doubt the oil change was free - especially if a CTS calls for synthetic oil ? Often intermittent problems on a car that age are caused by "fretting corrosion" on the connector terminals of low voltage circuits, and just unplugging and re-plugging components several times can magically "fix" it.

Dan Brizendine,
'64 8door Greenbrier 140 PG. "In beautiful Wanamaker Indiana...with one stop light and 5 pizza shops"

Options: ReplyQuote
Pages: 12Next
Current Page: 1 of 2


Sorry, only registered users may post in this forum.
This forum powered by Phorum.