Pontiac When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

1993 Pontiac Trans Sport 3.8

Thread Tools
 
Search this Thread
 
Old 01-27-2018, 07:53 AM
  #11  
Senior Member
True Car Nut
 
rjolly87's Avatar
 
Join Date: Jun 2003
Location: Las Cruces, NM
Posts: 7,270
Received 457 Likes on 359 Posts
rjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant future
Default

Originally Posted by rjolly87
Have you verified with a test light that there is no injector pulse when this is happening?
??????
Old 01-27-2018, 08:34 AM
  #12  
Retired



Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Dark Side, AZ
Posts: 17,920
Received 1,780 Likes on 1,304 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

What is the fuel pressure?
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel

Old 01-28-2018, 06:00 AM
  #13  
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
TS-3.8-L27's Avatar
 
Join Date: Jan 2018
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
TS-3.8-L27 is on a distinguished road
Default

The fuel pump is new, the injectors are not activated, they get no impulse.
Old 01-28-2018, 07:54 AM
  #14  
Retired



Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Dark Side, AZ
Posts: 17,920
Received 1,780 Likes on 1,304 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

Originally Posted by TS-3.8-L27
The fuel pump is new, the injectors are not activated, they get no impulse.
Just because its new, doesn't mean it works.
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel

Old 01-28-2018, 08:07 AM
  #15  
Senior Member

True Car Nut
 
Tech II's Avatar
 
Join Date: Feb 2014
Location: Worcester, Ma.
Posts: 2,878
Received 1,084 Likes on 832 Posts
Tech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond repute
Default

as Mike asked, we asked for fuel pressure a long time ago(using a gage)....

Also, does your ignition key have a black resistor on the shaft?
Old 01-28-2018, 10:30 AM
  #16  
Retired



Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Dark Side, AZ
Posts: 17,920
Received 1,780 Likes on 1,304 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

You are seeing 12V at the injectors because the injectors are constantly powered 12V+ when the key is on. The PCM controls the GROUND to the injectors. You still need to address the code 26 issue. This is the quad driver A circuit. The PCM controls/monitors a few things on this circuit. Give this forum a search for "quad driver" and you will find many instances of code 26.

26- Quad Driver A module monitors the low speed fan, Evap canister purge solonoid, the HIGH TEMP light, and TCC apply. Note that it does NOT monitor the high speed fan relay.
Disconnect both fans and attempt to start...???

Disconnect the EVAP purge valve solenoid and attempt to start...???
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel

Old 01-28-2018, 10:30 AM
  #17  
Retired



Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Dark Side, AZ
Posts: 17,920
Received 1,780 Likes on 1,304 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

BTW, its almost impossible to monitor the injector circuit with a cheap multimeter or a test light.
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel

Old 01-28-2018, 12:05 PM
  #18  
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
TS-3.8-L27's Avatar
 
Join Date: Jan 2018
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
TS-3.8-L27 is on a distinguished road
Default

The code 26 was tried on all controlled parts and we have found a fault in the ground line of the solenoid valve for gasoline vapor extraction, this has been fixed and the error has come back again.
The fuel pressure is 42psi.

The fan control was also completely measured by also there was no error.

We removed the fan and the plug from the solenoid valve but he did not start anyway.

We measured with a high-quality multimeter whether the injectors are controlled, but nothing happens.

What is the HIGH TEMP light, and TCC?
Old 01-28-2018, 03:27 PM
  #19  
Retired



Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Dark Side, AZ
Posts: 17,920
Received 1,780 Likes on 1,304 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

TCC is Torque Converter Lockup. Disconnect the trans electrical connector and see if it starts.
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel

Old 02-04-2018, 01:20 PM
  #20  
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
TS-3.8-L27's Avatar
 
Join Date: Jan 2018
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
TS-3.8-L27 is on a distinguished road
Default

Now I've pulled off all the controlled Quad Driver components in turn, but it still does not start.


Quick Reply: 1993 Pontiac Trans Sport 3.8



All times are GMT -4. The time now is 11:11 PM.