2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

above 1/3rd throttle = CEI?

Thread Tools
 
Search this Thread
 
Old 10-24-06, 11:48 AM
  #1  
Eats, Sleeps, Dreams Rotary

Thread Starter
 
Valkyrie's Avatar
 
Join Date: Oct 2004
Location: Japanabama
Posts: 4,731
Received 87 Likes on 63 Posts
above 1/3rd throttle = CEI?

The heck? I don't know if it's because of the colder weather or something, but using more than 1/3rd throttle causes my check engine light to blink on and off.

I'm pretty sure it's the TPS but I think the pressure sensor might be part of it, since it threw codes for all three of them.

What would cause this and how can I fix it?

It doesn't seem to effect how the car runs much, although my idle is strangely week again, even after fixing several vacuum leaks last night.
Old 10-24-06, 05:57 PM
  #2  
I R SAD PANDA W/O BAW

 
ilike2eatricers's Avatar
 
Join Date: Nov 2002
Location: bay area
Posts: 6,061
Likes: 0
Received 1 Like on 1 Post
ummm check the codes
Old 10-24-06, 06:10 PM
  #3  
Eats, Sleeps, Dreams Rotary

Thread Starter
 
Valkyrie's Avatar
 
Join Date: Oct 2004
Location: Japanabama
Posts: 4,731
Received 87 Likes on 63 Posts
I already did. At the time it was throwing the two TPS codes, and the pressure sensor codes.

Now it's just the pressure sensor code, last I checked.

Now the pressure sensor isn't working since it doesn't change the idle when I pinch its hose... doesn't look like the connector is loose so I'm gonna have to check the harness's continuity.
Old 10-24-06, 06:25 PM
  #4  
Flame Thrower

 
drewl's Avatar
 
Join Date: Oct 2004
Location: Bay Area
Posts: 188
Likes: 0
Received 0 Likes on 0 Posts
1/3 throttle according to TPS or according to your foot?
Old 10-24-06, 07:08 PM
  #5  
Eats, Sleeps, Dreams Rotary

Thread Starter
 
Valkyrie's Avatar
 
Join Date: Oct 2004
Location: Japanabama
Posts: 4,731
Received 87 Likes on 63 Posts
It's just an estimation.
Old 10-24-06, 07:22 PM
  #6  
Flame Thrower

 
drewl's Avatar
 
Join Date: Oct 2004
Location: Bay Area
Posts: 188
Likes: 0
Received 0 Likes on 0 Posts
my tps would always read 100% at 1/3 of the actual pedal throw. you can actually feel that point too. it's when the secondary butterflies start opening so there's more resistance on the throttle cable i guess. maybe your problem is related to that functionality somehow
Old 10-25-06, 07:24 AM
  #7  
Rotaries confuse me

iTrader: (7)
 
My5ABaby's Avatar
 
Join Date: May 2006
Location: Murfreesboro, TN
Posts: 4,219
Likes: 0
Received 3 Likes on 3 Posts
Originally Posted by drewl
my tps would always read 100% at 1/3 of the actual pedal throw. you can actually feel that point too. it's when the secondary butterflies start opening so there's more resistance on the throttle cable i guess. maybe your problem is related to that functionality somehow
S4? If so, that's normal.
Old 10-25-06, 11:50 AM
  #8  
Flame Thrower

 
drewl's Avatar
 
Join Date: Oct 2004
Location: Bay Area
Posts: 188
Likes: 0
Received 0 Likes on 0 Posts
yeah i figured it was normal. seemed like it made sense anyway.
Old 10-26-06, 11:26 AM
  #9  
Eats, Sleeps, Dreams Rotary

Thread Starter
 
Valkyrie's Avatar
 
Join Date: Oct 2004
Location: Japanabama
Posts: 4,731
Received 87 Likes on 63 Posts
It turns out that the light goes out once the engine is warmed up...

So I would suspect that the TPS is simply out of adjustment when it's cold (due to the thermowax) but when it's warm it goes back into spec.

This is the first time for me driving in the winter... it takes longer for the car to warm up.

The pressure sensor is still a problem though... I would expect it's why I'm not getting quite as much power nor as stable an idle as usual.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
LongDuck
1st Generation Specific (1979-1985)
12
10-07-15 08:12 PM
spokanerxdude
Megasquirt Forum
3
10-06-15 12:28 PM



Quick Reply: above 1/3rd throttle = CEI?



All times are GMT -5. The time now is 07:00 AM.