| 2004-2007 Cadillac CTS-V General Discussion Discuss everything about the first generation Cadillac CTS-V that does NOT fall into either the Performance or Appearance Modification category. | Cadillac Forums: Starting problem after maggie install? 
11-06-09, 06:03 PM
|  | Let Me See Your War Face!!! Cadillac(s): 05 CTS-V  | | Join Date: Feb 2005 Location: Mile High Age: 29 | | | Starting problem after maggie install?
This is following my maggie install this week.
I'm having a problem with the car starting after its been sitting for a while (a while meaning overnight). It sounds like a fuel problem as it will start, run for a few seconds to a minute then studder and choke and die. If I try to give it some gas during, it will die on me. After 15 mins or so of trying, it starts and stays running and then I can drive it. If Its been recently ran, I can start it up no problem at all but only after it sits over night its hell getting it going. Any ideas?
Under WOT, I get no studdering or hesitation, so I'm assuming my magnavolt is fine. The A/F on the dyno was normal.
On a side note, my installer is going to order and install a walbro intank 255, Then I can get rid of the damn magnavolt completely. This should help in my conversion to E85
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2005 Black on Black - Maggie MP112 (2.8 Pulley) - 90mm TB - Dyno tuned 430RWHP - B&M Shifter/UUC Bushings - 15% Tint - Red Z06 FRC's - Muffler Delete - Blacked out lights - SRP Pedals
PENDING installs: 2.6" blower pulley, Hawk HPS. FUTURE MODS: FI Cam, Headers, 160 T-Stat.
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11-06-09, 08:04 PM
|  | Cadillac Owners Member Cadillac(s): 05 maggied CTS-V, 03 maggied Z06 | | | | | Re: Starting problem after maggie install?
Replace the fuel filter.
You may have crudded it up.
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11-13-09, 01:51 AM
| | Let Me See Your War Face!!! Cadillac(s): 05 CTS-V | | Join Date: Feb 2005 Location: Mile High Age: 29 | | | Re: Starting problem after maggie install?
Im having a hell of a time here. I replaced the fuel filter but still dieseling and now I am getting hesitation when giving it gas. I'm getting some really low idles, when I give it gas, it dies most of the time. I'm also getting some surging. I really hope it's not a fuel pump problem.
Any ideas anyone? Misfiring somehow? Magnavolt? fuel pressure regulator? I guess I should check the O-ring on the back of the fuel pressure regulator. How do I measure fuel pressure?
Last edited by deedubb; 11-13-09 at 02:08 AM.
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11-13-09, 07:50 AM
|  | Cadillac Owners Enthusiast Cadillac(s): 04 CTS-V | | Join Date: Jul 2008 Location: Alabama Age: 27 | | | Re: Starting problem after maggie install?
Good Luck. I wish I could help but I can at least give u another bump.
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04 V, Magnaflow Catback w/ x-pipe, K&N CAI, HID conversion fogs (4300K), LED's, UUC shifter and bushings, more to come....(hopefully my cam package very soon!!!) |
11-13-09, 11:10 AM
|  | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Starting problem after maggie install?
Deedubb, check under the passenger-side FRC toward the rear. There's one of those friggin'-can't-remember-the-name fittings on a T in the fuel line, just before it makes that stupid U turn and into the fuel rails ... mine has a green cap on it. I think that might be a place to connect a fuel pressure gage to. I've got a fuel pressure gage, here, but to get it to you, the shipping cost would be darn near half the cost of the thing new. Pop your hood and take a look. Maybe someone else can chime in and verify/knock down if that fitting is where you can check it or not.
Dang! Whuddaya call that fitting?!! It looks like a valve stem.
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'05 CTS-V, Stealth Gray, Sunroof, 3M Clear Bra, B&M Shifter w/UUC Bushings, Specter Werkes Bushings, V Headrests, Wheel To Wheel Powertrain Tune, Corsa, Kooks w/Hi-Flo Cats, Ultimate Grid Pedals, Hotchkis Anti-Sways, STS-V Fogs, Ground Control 650R/600F, WW Clear Sidemarkers, Full-Size Spare, Magnuson SC Polished, CTS Console, FG2, Aggressive Street Alignment, MOMO Shift Knob, DSS/Hendrix Engrg Axles, UUC Flywheel. Soon: UUC MMs. 472 RWHP/411 RWTQ (Mustang dyno).
Last edited by rand49er; 11-13-09 at 11:24 AM.
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11-13-09, 11:23 AM
|  | Drive It. Break It. Build it Better Cadillac(s): Platinum 2004 CTS-V | | Join Date: Apr 2008 Location: Indiana | | | Re: Starting problem after maggie install?
My Jeep was doing that a month ago......fuel pressure regulator.
Also, you might check your Throttle Body Position Sensor.
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Monster Stage 3 Clutch & 18 lb flywheel, B&B headers w/ hi flow cats, B&B xpipe & catback, Lingenfelter CAI, UUC Gen II Motor Mounts/Trans Mount/Shifter/Shifter Bushings/Diff Bushing, Hotchkis Sways, BMR Trailing Arms & AWH Bushings, Hawk Pads, GM Assy Wheels, Stock Wheels, Drilled GM Rotors, Hendrix Axles, CAGS Elim, '06 Diff w/updated pinion, Clear Fogs DDM bulbs, Clear Sidemarkers, CTS center console, Tuned by Brent @ EPP on mustang dyno @ 378rwhp/366tq |
11-13-09, 12:32 PM
| | Cadillac Owners Member Cadillac(s): 05 maggied CTS-V, 03 maggied Z06 | | | | | Re: Starting problem after maggie install?
Check for vacuum leaks and ill fitting hoses off the intake.
You might pull the intake to the TB and see if there is oil in it (the TB) |
11-13-09, 12:42 PM
| | Let Me See Your War Face!!! Cadillac(s): 05 CTS-V | | Join Date: Feb 2005 Location: Mile High Age: 29 | | | Re: Starting problem after maggie install?
Thanks guys, I'll chech a few things and report back |
11-13-09, 03:30 PM
| | Let Me See Your War Face!!! Cadillac(s): 05 CTS-V | | Join Date: Feb 2005 Location: Mile High Age: 29 | | | Re: Starting problem after maggie install?
No oil in the TB. Re-grounded the magnavolt. Where is the fuel pressure regulator. Please tell me its not in the tank?? I checked ill fitting hoses going to/from the intake but all seem ok. |
11-13-09, 04:11 PM
| | Cadillac Owners Member Cadillac(s): 05 maggied CTS-V, 03 maggied Z06 | | | | | Re: Starting problem after maggie install?
Here are some suggestions:
After sitting overnight,
Disconnect the fuel supply line from the rail and stick it in a jar and turn on the ignition.
If you get fuel flow I would assume ok.
Attach a pressure gage for exact pressure.
It sounds like your somehow bleeding all the fuel back into the tank and having to refill the line. |
11-13-09, 05:55 PM
|  | Cadillac Owners Connoisseur Cadillac(s): '05 CTS-V, '00 SLS, 98 SLS, 89 Eldo, '80 Eldo | | Join Date: Mar 2006 Location: NYC Age: 38 | | | Re: Starting problem after maggie install?
Just checked my pics. You can connect the fuel pressure gauge on the pass side fuel rail.
__________________ '05 Platinum l LPE CAI l Magnaflow l V1 (hardwired), w/ custom mount l UUC shifter w/Lindsay bushings l UUC leather shift knob l K9 GEAR rear seat cover l CruiseCam l HID fogs l Falken RT-615s l Hotchkis sways W/Z06 end links l Billet A/C vent knobs l Hawk HP+/HPS l CG-Lock l Specter Werkes Bushings l Noah Custom cover l FG2s l Ground control 550/600 l MAGGIE 436RWHP/ 412RWTQ (Dynojet) l Heavys fire extinguisher bracket l Intercepter scan-gauge l Billet pedals l Meth l NO HEADERS  |
11-16-09, 07:08 PM
| | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Starting problem after maggie install?
Update ??? 
How're you doing, deedubb? |
11-16-09, 07:23 PM
| | Let Me See Your War Face!!! Cadillac(s): 05 CTS-V | | Join Date: Feb 2005 Location: Mile High Age: 29 | | | Re: Starting problem after maggie install?
Well it dumped another foot + snow on us so I haven't been able to do much on the car in the past few days. Will be testing my fuel pressure tomorrow. If fuel pressure is low, We'll be dumping the tank and replacing fuel pump with an intank walbro and a new fuel pressure regulator this week  I'm not sure what else it could be at this point.
One thing I did notice is that when I turn the ignition on (not starting the vehicle), I don't hear the fuel pump kick on anymore. I assume that sound I used to hear was the priming/or building up fuel pressure. |
11-17-09, 12:52 AM
| | Cadillac Owners Member Cadillac(s): 05 maggied CTS-V, 03 maggied Z06 | | | | | Re: Starting problem after maggie install?
That isn't right. |
11-17-09, 07:53 AM
| | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Starting problem after maggie install?
Quote:
Originally Posted by heavymetals  That isn't right. | I agree.
Seems kind of odd that the fuel pump would decide to take a dump at this particular moment. Are you certain all the electrical connections are good, particularly the ones you did during the install?
Sure hate to see you take the fuel tank out. That's not suppose to be a trivial deal. | | Cadillac Discussion Tools | | | 
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