SS doesn't accelerate more than 135 - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

0stones0 · 03-02-2024, 10:49 AM

Don’t think its your flow rate…get some proper octane in there before looking at fuel pumps.

RoadRunner70 · 03-02-2024, 10:53 AM

Quote:

Originally Posted by ZED SLED

Furthermore, once you've ran 87 in the early 5th gen SS, due to a software glitch you are stuck on the low octane fuel table and the only way to get back on the upper is to do the 5 & 20 fuse pull. IDK, they may have never fixed that for any model year 5th gen. Even made a sticky for this issue

https://www.camaro5.com/forums/showthread.php?t=38964

I know this trick ) I did this several times with Octane Booster because no good gasoline nearby , 87 only . On low throttle I can feel sometimes disbalance or something like hesitation coming from engine (or TC). This car for a 100,000 miles was drawn on 87 gasoline. Year ago I pulled heads for cleaning valves and found no criminal (except black valves)

Moto-Mojo · 03-02-2024, 11:45 AM

He raises a question. When you add octane booster (I like Lucas' product) does the ECM make some attempt to change the fuel table to the higher octane? I can only get 91 in Calunicornia. And it's full of ethanol at that.

gtstorey · 03-02-2024, 05:23 PM

Just a word of warning. Without more evidence than we have to go on, all of this is speculation. The low octane sure isn’t helping, but you could easily have other problems. You need to be collecting live data when this happens. Or better yet, put it on a dyno and see what is happening.

1JEWLDSSRS · 03-04-2024, 09:56 AM

Quote:

Originally Posted by ZED SLED

Furthermore, once you've ran 87 in the early 5th gen SS, due to a software glitch you are stuck on the low octane fuel table and the only way to get back on the upper is to do the 5 & 20 fuse pull. IDK, they may have never fixed that for any model year 5th gen. Even made a sticky for this issue

https://www.camaro5.com/forums/showthread.php?t=38964

^^^ Yep, I posted that above for him, maybe he'll get the hint! lol. Thanks..

1JEWLDSSRS · 03-04-2024, 09:59 AM

Quote:

Originally Posted by RoadRunner70

Thank you for reply, I will check it next time.

What is the good readings regarding fuel pressure and flow rate ? Maybe I installed the defective fuel pump ) I found one SPECTRA PREMIUM SP6681M with min flow rate 80 Gph and 75-85 psi

This is not going to be your problem. The fuel Octane is what the issues is.

RoadRunner70 · 03-08-2024, 08:42 PM

Quote:

Originally Posted by 1JEWLDSSRS

This is not going to be your problem. The fuel Octane is what the issues is.

But why, when there is about 37-43 km of fuel left, sometimes the CEL light comes on with a code related to the fuel pump control module and the car starts to drive very sluggishly ?
Last time car throwed another CEL for fuel pressure sensor P018B.

Refilling gasoline solves these problems.

Can I install fuel pump with hier pressure and gph ? Or I need 40 psi and 42 gph honly ?

chevy pilot · 03-09-2024, 12:23 AM

It is never a good idea to keep the tank almost empty.
Keep the tank at least half full, because the fuel cools the pump.

morepowerjoe · 03-09-2024, 12:54 AM

Quote:

Originally Posted by RoadRunner70

But why, when there is about 37-43 km of fuel left, sometimes the CEL light comes on with a code related to the fuel pump control module and the car starts to drive very sluggishly ?
Last time car throwed another CEL for fuel pressure sensor P018B.

Refilling gasoline solves these problems.

Can I install fuel pump with hier pressure and gph ? Or I need 40 psi and 42 gph honly ?

If I was you I would either invest in hp tuners or find a code scanner out there that logs fuel pressure to see if that's your issue. I would never replace my pump with anything other then an AC Delco just because it's only a $100 more then the one you got. Also the fuel pressure is preset in your tune it's not really controlled by the fuel pump.

PlymouthBarracuda · 03-14-2024, 11:43 PM

Quote:

Originally Posted by ZED SLED

Furthermore, once you've ran 87 in the early 5th gen SS, due to a software glitch you are stuck on the low octane fuel table and the only way to get back on the upper is to do the 5 & 20 fuse pull. IDK, they may have never fixed that for any model year 5th gen. Even made a sticky for this issue

https://www.camaro5.com/forums/showthread.php?t=38964

Does this really works on 2011 SS ? Somewhere here I read that this trick works for 2009-2010 SS only...

gtstorey · 03-15-2024, 10:33 AM

Quote:

Originally Posted by morepowerjoe

If I was you I would either invest in hp tuners or find a code scanner out there that logs fuel pressure to see if that's your issue. I would never replace my pump with anything other then an AC Delco just because it's only a $100 more then the one you got. Also the fuel pressure is preset in your tune it's not really controlled by the fuel pump.

Anytime fuel pressure is in question, get a separate diagnostic, mechanical gauge to confirm pressures.

gtstorey · 03-15-2024, 10:40 AM

Quote:

Originally Posted by PlymouthBarracuda

Does this really works on 2011 SS ? Somewhere here I read that this trick works for 2009-2010 SS only...

Won't hurt anything to do it either way.

1JEWLDSSRS · 03-16-2024, 03:23 PM

Quote:

Originally Posted by PlymouthBarracuda

Does this really works on 2011 SS ? Somewhere here I read that this trick works for 2009-2010 SS only...

My Camaro is a 2011, and it worked back when it was stock. And there were no 2009 Camaros.. You could order a 2010 in 2009..

d2cheer · 03-21-2024, 11:46 AM

Quote:

Originally Posted by Wizard1183

Yes, all SS Camaros are

What should a person notice after doing this?

03-02-2024, 10:49 AM	#15
0stones0 It don’t come easy. Drives: 2010 2SS RS M6 Join Date: May 2014 Location: WI Posts: 2,211 View My Garage	Don’t think its your flow rate…get some proper octane in there before looking at fuel pumps. __________________

03-02-2024, 11:45 AM	#17
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,974	He raises a question. When you add octane booster (I like Lucas' product) does the ECM make some attempt to change the fuel table to the higher octane? I can only get 91 in Calunicornia. And it's full of ethanol at that. __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

03-02-2024, 05:23 PM	#18
gtstorey Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017 Location: Huntsville, AL Posts: 2,155	Just a word of warning. Without more evidence than we have to go on, all of this is speculation. The low octane sure isn’t helping, but you could easily have other problems. You need to be collecting live data when this happens. Or better yet, put it on a dyno and see what is happening.

03-09-2024, 12:23 AM	#22
chevy pilot Drives: 2010 2SS/RS A6 Join Date: May 2019 Location: Hki.Finland Posts: 952	It is never a good idea to keep the tank almost empty. Keep the tank at least half full, because the fuel cools the pump.