General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds

running out of steam at the top of first

Thread Tools
 
Search this Thread
 
Old 10-15-2007, 09:10 AM
  #1  
TECH Fanatic
Thread Starter
iTrader: (23)
 
dlove's Avatar
 
Join Date: Sep 2005
Location: Fort Worth
Posts: 1,449
Likes: 0
Received 1 Like on 1 Post

Default running out of steam at the top of first

the car is a 00 z28 with about 109k miles

in first gear and only first gear the car just runs out of power and quits pulling around 5k. If i stay in it, it will slowly pull higher rpms. Once i shift to the next gear, it pulls hard again and keeps pulling all the way past 6k.

I thought my 4l60e was giving me issues so I pulled it out and sold it. Built a TH400 and put it in. The problem is still there.

I did a fuel pressure test and at idle it's 60lbs. Driving in 1st and all other gears it's 60lbs and does not drop.

Any other thoughts on what is causing this issue?

clifs- the car quits pulling at the top of first, but does not do it in any other gear.
Old 10-17-2007, 09:26 AM
  #2  
TECH Fanatic
Thread Starter
iTrader: (23)
 
dlove's Avatar
 
Join Date: Sep 2005
Location: Fort Worth
Posts: 1,449
Likes: 0
Received 1 Like on 1 Post

Default

update- wideband in the passenger side pipe says 13 to 1 when WOT and does not change

I then pulled some codes and found a rich bank 1.
Old 10-20-2007, 01:30 AM
  #3  
TECH Enthusiast
 
KENS_SS_4's Avatar
 
Join Date: Dec 2005
Location: NW burbs of Chicago
Posts: 510
Likes: 0
Received 0 Likes on 0 Posts
Default

13 to 1 at WOT sounds lean to me.




All times are GMT -5. The time now is 09:37 PM.