TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

New TPS not in spec and fully adjusted in one direction

Thread Tools
 
Search this Thread
 
Old 07-18-2005, 10:53 AM
  #1  
Senior Member

Thread Starter
 
cdartz's Avatar
 
Join Date: Mar 2000
Posts: 737
Likes: 0
Received 0 Likes on 0 Posts
New TPS not in spec and fully adjusted in one direction

As stated in the topic I installed a new TPS. I'm reading 0.52 volts closed and 4.35 at WOT. I believe the closed reading should be 0.54 but I can't get it there as I'm already adjusted completely in the one direction. There is no more adjustment left. Does this sound normal to you guys? Shouldn't I be more to the middle of the adjustment instead of at the extreme end to get these numbers. I'm thinking I should get another TPS.
Old 07-18-2005, 11:03 AM
  #2  
Supreme Member

iTrader: (7)
 
Dyno Don's Avatar
 
Join Date: Mar 2000
Location: Orange, CA
Posts: 5,674
Likes: 0
Received 106 Likes on 65 Posts
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
That's ok....anywhere between .52 & .63 is good.
Old 07-18-2005, 11:16 AM
  #3  
Junior Member
 
Wayne's 383Iroc's Avatar
 
Join Date: Nov 2004
Location: Ga.
Posts: 70
Likes: 0
Received 0 Likes on 0 Posts
Car: 88 IROC
Engine: 383
Transmission: 700R4
I set my closed at .6 to .62, the WOT should be more than that reading 4.8 to 4.9 with a 5v signal.
Old 07-18-2005, 05:52 PM
  #4  
Supreme Member

 
8Mike9's Avatar
 
Join Date: Jul 1999
Location: Oakdale, Ca
Posts: 5,183
Received 42 Likes on 38 Posts
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
Carefully bend the little tab/sweeper back some..may have been abused in shipping.
Old 07-18-2005, 06:21 PM
  #5  
Senior Member

iTrader: (4)
 
IROCZ4BD3's Avatar
 
Join Date: May 2000
Location: Oaks,Pa
Posts: 588
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 IROC
Engine: 350 HSR
Transmission: modified 700R4
Axle/Gears: 3.42
Chris installed a new TPS and got the same readings as you this past sat.
Old 07-19-2005, 12:32 AM
  #6  
Senior Member

Thread Starter
 
cdartz's Avatar
 
Join Date: Mar 2000
Posts: 737
Likes: 0
Received 0 Likes on 0 Posts
I may end up grabbing another one from work and trying it. I bought the last one though so I'll have to wait till our shipment comes on Thursday. For now it's running ok.
Old 07-19-2005, 07:21 AM
  #7  
Senior Member

iTrader: (4)
 
IROCZ4BD3's Avatar
 
Join Date: May 2000
Location: Oaks,Pa
Posts: 588
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 IROC
Engine: 350 HSR
Transmission: modified 700R4
Axle/Gears: 3.42
I'm not worrying about it sine it's w/in the +-.07 range
Old 07-19-2005, 10:31 PM
  #8  
Senior Member

Thread Starter
 
cdartz's Avatar
 
Join Date: Mar 2000
Posts: 737
Likes: 0
Received 0 Likes on 0 Posts
I'm not worried about the range. It's basically within spec. It's the fact that it's adjusted completely in the one direction that bothers me. There is no more room to adjust if it would become necessary later on.

I think I'm gonna check my minimum air screw and see where the throttle plates are sitting when closed. Changing that may in turn allow me to more adjustment with the TPS.
Old 07-20-2005, 04:40 PM
  #9  
Senior Member

iTrader: (4)
 
IROCZ4BD3's Avatar
 
Join Date: May 2000
Location: Oaks,Pa
Posts: 588
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 IROC
Engine: 350 HSR
Transmission: modified 700R4
Axle/Gears: 3.42
I tried that but can't keep it idleing low enough.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
customblackbird
Suspension and Chassis
4
08-15-2021 10:16 PM
BAMiller
TPI
4
09-14-2015 06:38 PM
db057
TBI
13
09-04-2015 07:57 AM
BurlyChev
Electronics
0
08-22-2015 11:42 AM



Quick Reply: New TPS not in spec and fully adjusted in one direction



All times are GMT -5. The time now is 09:58 PM.