Car shakes aggressively while gassing up!!

Ajmalian · 08-31-2017, 01:18 PM

Hey guys,

I've a friend who's not on the forum and owns a 1LT facing some issues. Was wondering if anyone here would possibly know whats going on. He claims his car drives and idles smooth and fine, however when and ONLY when gassing up, he experiences rough idling and his car shakes from side to side rather aggressively. Any idea what it could be?

Haven't taken it to the dealership as yet and trying to avoid doing so because unfortunately our lame dealership would most probably say "this is normal" even if you placed a burning car in front of them.

Would appreciate your expert opinions.

Best regards and have a nice day!!

Glen e · 08-31-2017, 01:20 PM

To clarify, engine is on while refilling?

VABarn · 08-31-2017, 01:21 PM

For starters, it's against the law to fill up a vehicle in a lot of states while the engine is running, so you might want to ask your buddy to double check the local laws on that one. Second, I wouldn't be surprised if it was some sort of breaking of a vacuum that is causing the issue.

KMPrenger · 08-31-2017, 01:23 PM

Turn it off while filling up.

/End Thread

Mr. Meh · 08-31-2017, 01:24 PM

It could very well be unhappy with the seal breaking the vapor recovery system in the gas tank..

Also, as pointed out above.. It's inadvisable and probably illegal to fill up your gas tank while the engine is running.

EDIT -- I see you're listed as being in Dubai.. I don't know what the laws are there about leaving an engine idling while gassing up, but you might want to check that.. Here in the USA, it's illegal.

red_johnny · 08-31-2017, 01:29 PM

It might not be illegal in Dubai to fill up with the engine on. Or its possible that he meant accelerating in stead of "gassing up".

zx9rmal · 08-31-2017, 01:38 PM

Quote:

Originally Posted by red_johnny

It might not be illegal in Dubai to fill up with the engine on. Or its possible that he meant accelerating in stead of "gassing up".

"ONLY when gassing up, he experiences rough idling"
Sounds like when he's getting fuel.

Glen e · 08-31-2017, 01:42 PM

Quote:

Originally Posted by KMPrenger

Turn it off while filling up.

/End Thread

Exactly....

If the gas cap is loose, it will trigger a check engine light, that's common in all cars these days. So I would assume if engine running/refilling, you're messing with the whole fuel system. Stop doing that, says common sense.....LOL

SSport16 · 08-31-2017, 01:54 PM

Patient: Doctor it hurts when I do this.

Doctor: Stop doing that then.

Lol.

dennis@hixsonnet.com · 08-31-2017, 01:56 PM

...if the car's a 'rocken dont come a 'knocken

Cameron27 · 08-31-2017, 02:04 PM

.

14Black1LESS · 08-31-2017, 02:23 PM

Quote:

Originally Posted by Cameron27

Given the context I am assuming "gassing up" means pushing the gas pedal in order to make the car accelerate faster.

Idk what to do. Your friend should take it to a certified service place, or a mechanic, depending on if this is covered by warranty and who he prefers working on the car. It's not total rocket science: the car isn't working properly, get it checked out asap or stuff might get damaged worse than how things are currently, or worse someone could get hurt.

I'm pretty sure he means while putting gas in the car.

nancygrl · 08-31-2017, 02:42 PM

You said, "He claims his car drives and idles smooth and fine." idles rough and shakes while "gassing up"....We're guessing that you mean "re-fueling" or "filling up" the car with gas.
If this rough running is because your friend leaves the car running while filling the tank with gas...Tell him to shut it off before re-fueling....End of problem.

avalonandl · 08-31-2017, 03:35 PM

Did yo notice OP is in Dubai....

08-31-2017, 01:18 PM	#1
Ajmalian Drives: 2017 ZL1 and 2016 GMC Sierra Denali Join Date: Jul 2010 Location: Dubai, United Arab Emirates Posts: 248	Car shakes aggressively while gassing up!! Hey guys, I've a friend who's not on the forum and owns a 1LT facing some issues. Was wondering if anyone here would possibly know whats going on. He claims his car drives and idles smooth and fine, however when and ONLY when gassing up, he experiences rough idling and his car shakes from side to side rather aggressively. Any idea what it could be? Haven't taken it to the dealership as yet and trying to avoid doing so because unfortunately our lame dealership would most probably say "this is normal" even if you placed a burning car in front of them. Would appreciate your expert opinions. Best regards and have a nice day!!

08-31-2017, 01:20 PM	#2
Glen e Retired from Car mfrs.... Drives: 2LT RS/HR-V Join Date: May 2013 Location: /Fort Lauderdale Posts: 10,048	To clarify, engine is on while refilling? __________________ Glen CLICK HERE for detailing a new car: detailing for non detailers CLICK HERE for how to rinseless CLICK HERE for EASY wheel sealant

08-31-2017, 01:23 PM	#4
KMPrenger Drives: 16 Camaro SS, 15 Colorado Join Date: May 2009 Location: Jefferson City, Missouri Posts: 13,943	Turn it off while filling up. /End Thread __________________ 2016 Camaro 1SS - 8-speed - NPP - Black bowties 2010 Camaro 1LT V6 (Sold. I will miss her!)

08-31-2017, 01:54 PM	#9
SSport16 Drives: 2016 Garnet Red Camaro 2SS Join Date: Jul 2015 Location: North Carolina Posts: 5,435	Patient: Doctor it hurts when I do this. Doctor: Stop doing that then. Lol. __________________ 2SS Camaro, Garnet Red, Adrenaline Red, NPP, MRC, A8, 5 Split Spoke Bright Silver Wheels (56W) 1100 Status - 7/24/15 (Ordered) 3800 Status - 10/13/15 (Built) 6000 Status - 12/22/15 (Delivered)

08-31-2017, 01:56 PM	#10
dennis@hixsonnet.com Drives: Me: '16 2SS yellow, Wife: '16 1SS Join Date: Feb 2016 Location: Fort Worth, TX Posts: 447	...if the car's a 'rocken dont come a 'knocken __________________ - Dennis Hixson 2016 Camaro 2SS ** EdelBrock E-Force Supercharger, 3" pulley, RotoFab air intake, Alky Methanol Injection System, Corsa Extreme Exhaust, Kooks longtube headers, TSP VV2 CAM, 1LE wheels @ 285/30/20 front & 305/30/20 rear... 707.41rwhp, 702.36 torque

08-31-2017, 01:21 PM	#3
VABarn Drives: 2016 Hyper Blue 2SS Vert Join Date: Jul 2016 Location: Manassas, VA Posts: 58	For starters, it's against the law to fill up a vehicle in a lot of states while the engine is running, so you might want to ask your buddy to double check the local laws on that one. Second, I wouldn't be surprised if it was some sort of breaking of a vacuum that is causing the issue.

08-31-2017, 01:24 PM	#5
Mr. Meh Drives: Sold Join Date: Mar 2017 Location: Somewhere Posts: 775	It could very well be unhappy with the seal breaking the vapor recovery system in the gas tank.. Also, as pointed out above.. It's inadvisable and probably illegal to fill up your gas tank while the engine is running. EDIT -- I see you're listed as being in Dubai.. I don't know what the laws are there about leaving an engine idling while gassing up, but you might want to check that.. Here in the USA, it's illegal.

08-31-2017, 01:29 PM	#6
red_johnny Drives: 2016 Gray 2SS M6 Join Date: Jun 2012 Location: Hermitage, PA Posts: 753 View My Garage	It might not be illegal in Dubai to fill up with the engine on. Or its possible that he meant accelerating in stead of "gassing up".

08-31-2017, 02:04 PM	#11
Cameron27 Drives: 2015 2SS Join Date: Aug 2017 Location: Texas Posts: 349	. Last edited by Cameron27; 06-06-2019 at 10:33 PM.

08-31-2017, 02:42 PM	#13
nancygrl 雪の玉 Drives: '22 Z71 RST Silverado Join Date: Feb 2011 Location: South Posts: 3,415	You said, "He claims his car drives and idles smooth and fine." idles rough and shakes while "gassing up"....We're guessing that you mean "re-fueling" or "filling up" the car with gas. If this rough running is because your friend leaves the car running while filling the tank with gas...Tell him to shut it off before re-fueling....End of problem.

08-31-2017, 03:35 PM	#14
avalonandl Drives: 2019 ZL-1 Join Date: Feb 2009 Location: Troy, MI & Naples, FL Posts: 2,019	Did yo notice OP is in Dubai.... __________________ 2019 ZL-1 Acquired 4/23/21 at 6300 miles. Riverside Blue, A10, PDR. Traded in 2017 2SS with 6M and 32k miles. Continental Extreme Contact Sports. Now has 10,000 miles... 2012 Yukon XL Denali w/ 6.2 AWD

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