TPS/ reduced power light. - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

OHIOSS · 07-21-2020, 09:43 PM

Ever since I got my car out of winter storage I have been getting the TPS code and that the power is reduced. I keep and OBD scanner in the car so I am able to clear the code. I went a couple of weeks without getting the reduced power notice on the DIC but the past 2 times I've driven the car it's happened both times.

Before the reduced power light comes on I don't notice anything different with the car and as soon as I clear the code the car operates normally. Anyone else have this problem? If so did you replace the TPS or the whole throttle body assembly?

The problem is no matter which one I buy I can't return even if that's not the problem with the car. The OEM throttle body assembly is like $400 so I would hate to buy one and find out that it's not the problem.

Greenhornet2 · 07-22-2020, 08:59 AM

Throttle body is known to cause these problems. If I were you I'd probably upgrade and get a ported throttle body and be done with it.

Bo White · 07-22-2020, 10:02 AM

I think AC Delco TBs off eBay are like $200

OHIOSS · 07-22-2020, 04:17 PM

Thanks for the responses. Is it worth upgrading to the larger 102MM TB? Any idea how much more HP that will get me? I did find out that if I change the TB to anything other than the OEM unit that my computer will have to be tuned to accept it. I don't want to go through all of that for a 5HP boost or something small like that.

Black_SS10 · 07-22-2020, 04:36 PM

Quote:

Originally Posted by OHIOSS

Thanks for the responses. Is it worth upgrading to the larger 102MM TB? Any idea how much more HP that will get me? I did find out that if I change the TB to anything other than the OEM unit that my computer will have to be tuned to accept it. I don't want to go through all of that for a 5HP boost or something small like that.

A 102 will be pointless since the factory manifold is still a 90mm opening. You would have to tune for that big of a TB. It wouldn't be worth the trouble. Get a factory one or a ported one. The ported one will help with throttle response and a tune will help even more.

Greenhornet2 · 07-23-2020, 10:38 AM

No point in a 102MM unless you are boosted and pushing a lot of power

Bo White · 07-23-2020, 10:51 AM

I'm 10rwhp on ported 90 vs 102 on my heavily modded N/A build.

07-21-2020, 09:43 PM	#1
OHIOSS Russ Drives: Yukon Denali, Charger, CamaroSS Join Date: Jun 2009 Location: Ohio Posts: 2,811	TPS/ reduced power light. Ever since I got my car out of winter storage I have been getting the TPS code and that the power is reduced. I keep and OBD scanner in the car so I am able to clear the code. I went a couple of weeks without getting the reduced power notice on the DIC but the past 2 times I've driven the car it's happened both times. Before the reduced power light comes on I don't notice anything different with the car and as soon as I clear the code the car operates normally. Anyone else have this problem? If so did you replace the TPS or the whole throttle body assembly? The problem is no matter which one I buy I can't return even if that's not the problem with the car. The OEM throttle body assembly is like $400 so I would hate to buy one and find out that it's not the problem.

07-22-2020, 08:59 AM	#2
Greenhornet2 Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019 Location: Connecticut Posts: 1,925	Throttle body is known to cause these problems. If I were you I'd probably upgrade and get a ported throttle body and be done with it. __________________ Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane

07-23-2020, 10:38 AM	#6
Greenhornet2 Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019 Location: Connecticut Posts: 1,925	No point in a 102MM unless you are boosted and pushing a lot of power __________________ Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane

07-22-2020, 10:02 AM	#3
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	I think AC Delco TBs off eBay are like $200

07-22-2020, 04:17 PM	#4
OHIOSS Russ Drives: Yukon Denali, Charger, CamaroSS Join Date: Jun 2009 Location: Ohio Posts: 2,811	Thanks for the responses. Is it worth upgrading to the larger 102MM TB? Any idea how much more HP that will get me? I did find out that if I change the TB to anything other than the OEM unit that my computer will have to be tuned to accept it. I don't want to go through all of that for a 5HP boost or something small like that.

07-23-2020, 10:51 AM	#7
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	I'm 10rwhp on ported 90 vs 102 on my heavily modded N/A build.