Surging on a hot day

GarnetRedJuan · 07-08-2018, 01:29 PM

Hey guys, looking to see if anyone else has experienced something like this before.

I went out on a car cruise yesterday with my friend. He was in his hellcat A8 and I’m in my A10. It was a really hot day and ranged from 90-110 degrees throughout the cruise. When I met up with him, I left the car running to keep cycling oil and coolant so it did not heat soak. I stopped to get gas which was the only time I turned the car off.

We proceeded to start our cruise and we got on the freeway spiritedly. After about 2 minutes, he accelerated in front of me and I try to follow. My car starts to surge very aggressively so much to the point where it couldn’t even hit redline. I don’t remember the speed or gear but I will upload the PDR recording when I get a chance. I go to check the engine oil temp and it was almost at 300. I had never experienced this with the car. Last summer was hot as well and never saw this. I monitored the rest of the trip and didn’t surge again but it continued to be extremely underpowered on occasions, so much so that the hellcat would leave me car lengths behind. Both stock. On other occasions, it would have a really good showing.

TLDR: spirited driving, heavy engine surging. Engine oil temps really high for about 3-4 minutes.

Has anybody experienced serious surging on a hot day? I have the oem dexos fill in and less than 1k miles on the oil change. Could the oil not be adequate for this heat/driving? I know track days get a different oil, perhaps for this reason?

GarnetRedJuan · 07-08-2018, 08:11 PM

Well after checking my pdr, it seems as though that it did not save that session, which is really aggravating.

Id appreciate any input on this. Other occurrences, freak accident, remedies etc. I cannot emphasize how aggressive the surging was. It was definitely the computer pulling power. It couldn’t even get to red line in whatever gear it was, which was 3 or 4

hashtag · 07-08-2018, 11:27 PM

The odd part is it occurred shortly after you got fuel! I would have to say fuel related.

Boo · 07-08-2018, 11:47 PM

Quote:

Originally Posted by hashtag

The odd part is it occurred shortly after you got fuel! I would have to say fuel related.

^Good point there! Did you fill up? Strange station? Bad gas?

Bryanh24 · 07-08-2018, 11:49 PM

Similar thing happened to me today. Went to the Cars and Coffee in Palm Beach FL and there was a TON of traffic to get out. I have an M6 and was scooting up little by little as the traffic was moving. Pushed the clutch in and it stalled and I am almost positive I had my foot to the floor while sitting still in first gear. Then after getting out of the traffic I did a little pull on the road with the ac off, came to a stop light and turned the AC back on and the rpm's dropped as if the car was going to die but it caught itself. Very odd. Car did have Shell V Power in it as well. Glad it's under warranty if anything does end up happening!

Larrio Andretti · 07-09-2018, 12:15 AM

Could be fuel line vapor lock.

dwill8335 · 07-09-2018, 04:07 AM

I had similar situation surging under hard throttle, high speed pump make sure your dealer calls the engine guy in Detroit , he knows this problem

Fred 6528 · 07-09-2018, 04:30 AM

I would suspect fuel that you just put in it

hashtag · 07-09-2018, 05:35 AM

I would stick with Chevron and Mobil.

GarnetRedJuan · 07-09-2018, 10:27 AM

Quote:

Originally Posted by Larrio Andretti

Could be fuel line vapor lock.

I never even thought of it being fuel line vapor lock. I was probably about at 1/8th. I filled with shell V power but a downtown San Diego gas station and I am usually in north county. I never use anything but chevron premium and if that’s not around, shell V power.

Quote:

Originally Posted by dwill8335

I had similar situation surging under hard throttle, high speed pump make sure your dealer calls the engine guy in Detroit , he knows this problem

This is interesting. And by high speed do you mean the high pressure fuel pump?
Did you get this diagnosed and replaced?

GarnetRedJuan · 07-15-2018, 09:25 AM

Well I got PDR recording proof this morning on 2 separate occasions. While it’s bumming me out it happened again, this time on a 74 degree morning with 220-240 engine oil temps, I’m at least glad I have something to show when going to the dealer.

It happened at 2 different speeds, one at 120ish and one approaching 150ish. I will share the video with anyone who wants to see it, but I’m not sure how this forum feels about me approaching higher speeds on roads in Mexico...

DANACO · 07-15-2018, 09:56 AM

Possible bad fuel pump.

GarnetRedJuan · 07-26-2018, 06:38 PM

Just got a call back from the dealership. They found a misfire in the logs at 106mph. they are saying there is a service bulletin for high speed track use that claims there is air in the charge air cooler and it causes misfires. I don't quite buy it, but I guess all I can do is get the car back and see if the problem persists.

itsadryheat79 · 07-26-2018, 07:03 PM

When you track it put the recommended oil in - sounds like heat soak.
Get a device to monitor your ECU via the ODB port and look at your IAT2 temps.
You could also try using Torco Accelerator - to get your octane up.

From the Track prep guide.
https://my.chevrolet.com/content/dam...tion-guide.pdf

(OW-40 or 5W-40 that meets the
dexos2TM specification. If this oil is
not available, you can use Valvoline®
SynPowerTM MST 5W-40 or Mobil 1®
15-W-50 engine oil)

07-08-2018, 01:29 PM	#1
GarnetRedJuan Drives: 2017 garnet red zl1 2022 AT4 HD Join Date: Nov 2016 Location: San diego Posts: 115	Surging on a hot day Hey guys, looking to see if anyone else has experienced something like this before. I went out on a car cruise yesterday with my friend. He was in his hellcat A8 and I’m in my A10. It was a really hot day and ranged from 90-110 degrees throughout the cruise. When I met up with him, I left the car running to keep cycling oil and coolant so it did not heat soak. I stopped to get gas which was the only time I turned the car off. We proceeded to start our cruise and we got on the freeway spiritedly. After about 2 minutes, he accelerated in front of me and I try to follow. My car starts to surge very aggressively so much to the point where it couldn’t even hit redline. I don’t remember the speed or gear but I will upload the PDR recording when I get a chance. I go to check the engine oil temp and it was almost at 300. I had never experienced this with the car. Last summer was hot as well and never saw this. I monitored the rest of the trip and didn’t surge again but it continued to be extremely underpowered on occasions, so much so that the hellcat would leave me car lengths behind. Both stock. On other occasions, it would have a really good showing. TLDR: spirited driving, heavy engine surging. Engine oil temps really high for about 3-4 minutes. Has anybody experienced serious surging on a hot day? I have the oem dexos fill in and less than 1k miles on the oil change. Could the oil not be adequate for this heat/driving? I know track days get a different oil, perhaps for this reason?

07-08-2018, 11:27 PM	#3
hashtag Drives: 2018 ZL1 A10/2018 GT350R #JR603 Join Date: Jan 2017 Location: Dublin CA Posts: 819	The odd part is it occurred shortly after you got fuel! I would have to say fuel related. __________________ 2018GT350R+2018 ZL1 "Red Hot" A10 w/ PDR, Nav, Carbon Fiber Hood insert, Carbon Fiber Dash Insert, Carbon Fiber Fuel Dior & Sun Roof. T/M T-Body, Roto Fab & Borla S Type.

07-09-2018, 12:15 AM	#6
Larrio Andretti Drives: Really Fast Join Date: Aug 2017 Location: In The Woods Posts: 238	Could be fuel line vapor lock. __________________ THIS SPACE FOR RENT

07-09-2018, 05:35 AM	#9
hashtag Drives: 2018 ZL1 A10/2018 GT350R #JR603 Join Date: Jan 2017 Location: Dublin CA Posts: 819	I would stick with Chevron and Mobil. __________________ 2018GT350R+2018 ZL1 "Red Hot" A10 w/ PDR, Nav, Carbon Fiber Hood insert, Carbon Fiber Dash Insert, Carbon Fiber Fuel Dior & Sun Roof. T/M T-Body, Roto Fab & Borla S Type.

07-26-2018, 07:03 PM	#14
itsadryheat79 Drives: 2018 ZL1 1LE (2)79Z28 72RS 67SS 69Z Join Date: May 2009 Location: Arizona Posts: 422 View My Garage	When you track it put the recommended oil in - sounds like heat soak. Get a device to monitor your ECU via the ODB port and look at your IAT2 temps. You could also try using Torco Accelerator - to get your octane up. From the Track prep guide. https://my.chevrolet.com/content/dam...tion-guide.pdf (OW-40 or 5W-40 that meets the dexos2TM specification. If this oil is not available, you can use Valvoline® SynPowerTM MST 5W-40 or Mobil 1® 15-W-50 engine oil) __________________ - Buttons and Skulls - miss my annimated signature.

07-08-2018, 08:11 PM	#2
GarnetRedJuan Drives: 2017 garnet red zl1 2022 AT4 HD Join Date: Nov 2016 Location: San diego Posts: 115	Well after checking my pdr, it seems as though that it did not save that session, which is really aggravating. Id appreciate any input on this. Other occurrences, freak accident, remedies etc. I cannot emphasize how aggressive the surging was. It was definitely the computer pulling power. It couldn’t even get to red line in whatever gear it was, which was 3 or 4

07-08-2018, 11:49 PM	#5
Bryanh24 Drives: 2017 ZL1 Join Date: Apr 2018 Location: Florida Posts: 97	Similar thing happened to me today. Went to the Cars and Coffee in Palm Beach FL and there was a TON of traffic to get out. I have an M6 and was scooting up little by little as the traffic was moving. Pushed the clutch in and it stalled and I am almost positive I had my foot to the floor while sitting still in first gear. Then after getting out of the traffic I did a little pull on the road with the ac off, came to a stop light and turned the AC back on and the rpm's dropped as if the car was going to die but it caught itself. Very odd. Car did have Shell V Power in it as well. Glad it's under warranty if anything does end up happening!

07-09-2018, 04:07 AM	#7
dwill8335 Drives: 2017 Camaro ZL1 Ice Metallic A10 Join Date: Feb 2017 Location: Ft McCoy, Florida Posts: 37	I had similar situation surging under hard throttle, high speed pump make sure your dealer calls the engine guy in Detroit , he knows this problem

07-09-2018, 04:30 AM	#8
Fred 6528 Drives: 2011 ss Join Date: May 2013 Location: va Posts: 983	I would suspect fuel that you just put in it

07-15-2018, 09:25 AM	#11
GarnetRedJuan Drives: 2017 garnet red zl1 2022 AT4 HD Join Date: Nov 2016 Location: San diego Posts: 115	Well I got PDR recording proof this morning on 2 separate occasions. While it’s bumming me out it happened again, this time on a 74 degree morning with 220-240 engine oil temps, I’m at least glad I have something to show when going to the dealer. It happened at 2 different speeds, one at 120ish and one approaching 150ish. I will share the video with anyone who wants to see it, but I’m not sure how this forum feels about me approaching higher speeds on roads in Mexico...

07-15-2018, 09:56 AM	#12
DANACO Drives: 18 ZL1 Join Date: May 2018 Location: Denver Posts: 220 View My Garage	Possible bad fuel pump.

07-26-2018, 06:38 PM	#13
GarnetRedJuan Drives: 2017 garnet red zl1 2022 AT4 HD Join Date: Nov 2016 Location: San diego Posts: 115	Just got a call back from the dealership. They found a misfire in the logs at 106mph. they are saying there is a service bulletin for high speed track use that claims there is air in the charge air cooler and it causes misfires. I don't quite buy it, but I guess all I can do is get the car back and see if the problem persists.

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