Question about 1992 Saturn SL

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1992 saturn coupe 4 cyl motor twin cam

What is a code 26 it says quad driver module. What do we do to fix the problem?

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  • yadayada
    yadayada May 11, 2010

    DTC PARAMETERS Perform these test to find the cause
    DTC 26 is set when the PCM has detected the following conditions for more than four seconds twice per ignition cycle.


    • Engine speed greater than 908 rpm.
    • Turbine speed is between 224 and 2800 rpm.
    • TCC is commanded to release for more than 0.25 seconds.
    • Load value (engine torque) is greater than 100.
    • Speed delta (engine speed - turbine speed) across torque converter is less than 84 rpm.

    TEST DESCRIPTION
    Numbered steps below refer to numbered steps on chart.


    1. Check for information flags 79, 93, or 96. They must be eliminated first as a possible cause of DTC26.
    2. Check actuator operation. Use actuator quick check. The actuator quick test will Pulse Width Modulate (PWM) the actuators at a set rate. Listen and compare the noise of TCC gear actuator to that of other actuators. The noise of all should be similar.
    3. The TCC release circuit may be leaking at the seal ring on the input shaft. This would allow release pressure to leak off to converter out circuit or lube circuit. Also a remote possibility is the ball pressed into the input shaft is loose.

    DIAGNOSTIC AIDS


    • When the PCM detects a fault in the circuit (open ground, short), the PCM will open the circuit internally to protect the circuit.
    • On 1992 2nd design, 1993 and 1994 vehicles, the TCC may be detected as stuck on when the transaxle is put into drive range. If TCC is stuck on at start-up, a stall may occur, and after a restart it will result in a 3rd or 4th gear start.

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That code is your egr valve or your egr solenoid.sometimes you can remove valve and clean thoroughly with brake cleaner for a cherap alternative.

Posted on Mar 21, 2009

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I had this [problem. Tried the changing the EGR, the selenoid, after hours of looking it was a bad coolant fan motor pulling too many ohms and eventually blew the 30 amp maxifuse.

Posted on Oct 14, 2010

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  • Master
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Code 26 is a soft fault code. You need to replace the egr solinoid and the ccp solinoid. The egr is on the valve cover, the ccp is on the back side of the block, under #3 intake runner.

Posted on Jan 24, 2009

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SOURCE: 94 Saturn Twin Cam Valve Adjustment

Valve slash and clearance adjustments should only be performed by certified mechanics and is not a job for the garage or novice hands on type.
If you still decide to proceed, I suggest you get your hands on a maintenance manual which will list the procedure step by step, including proper torque values.

Posted on Mar 05, 2009

  • 299 Answers

SOURCE: Drivers side door jammed

You will have to roll window down and take very long screw driver to insert through glass opening and beak up latch assembly then door will open ,Then remove door panel and will be able to replace latch,Best done by proffessioal,one mistake can cost.

Posted on Jun 17, 2009

fingaz22
  • 1068 Answers

SOURCE: have 95 saturn sl with code 26 and 27 quad driver

well the quad driver may not be at fualt and most likely is not.

there is a fualt line that the computer uses to monitor for fualts but the thing is one line monitors four different things and the code is to get you in the general area but not to the exact fualt. so from here you need to test for failed components. that code and the quad driver monitors the a/c , evap solniod , egr solenoid and coolant fan relay. the fan relay and egr are the most common i see all the time. and with you having an isssue with that coolant light i want to say check the fan circuit.

let me know if you have more question thank you and good luck

Posted on Nov 26, 2009

Testimonial: "Thanks I'll check those circuits,but could not find a test for the egr module,but did find for linear egr valve."

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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1 Answer

Quad driver module code 26 and 28


A quad driver is a transistor in the engine control module ! GM OBD Trouble Code 26 GM OBD Trouble Code 28

Jul 24, 2016 | Cars & Trucks

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It's a 1995 Saturn sl the clutch on ac compressor kicks on with direct power the engine fan also changed relays still get the code 26 quad drive modal need some help


This info is from 1998 Saturn Sl , my service info doesn't go to 95 . It's the same except for code numbers , My info is P0xxx #'s . The quad driver is part of the ECM - engine computer !
Here is a description from Saturn service info .
A quad driver module (QDM) is an electronic switch which completes a ground circuit when switching ON. The QDM independently controls 4 separate outputs. A load is connected between battery voltage and the QDM allowing the QDM driver to control the output. Each QDM has fault detection logic which compares QDM driver input and output voltages. The logic expects to measure less than 3 volts when the QDM driver is ON and greater than 7 volts when OFF. The QDM has only one fault line that will detect a fault on any of the 4 outputs. The scan tool can be used to cycle the outputs ON or OFF. The scan tool can also perform an automated test which can isolate the faulty circuit.
The quad drive it self may be bad , GM had a problem with these !
Did you check fuse's ?
Conditions for Setting the DTC
DTC P01650 and/or P1651 will set if:
?€¢
There is an open, short to ground or short to voltage on any of the QDM output circuits


?€¢
MIL (SERVICE ENGINE SOON) telltale circuit


?€¢
Upshift lamp circuit


?€¢
Cooling fan relay circuit


?€¢
A/C relay circuit


?€¢
Fault detected for 5 seconds for DTC P1651. Fault detected for 20 seconds for DTC P1650.

Important: The QDM circuit is continuously checked when the engine is running.

May 18, 2015 | 1995 Saturn Sl

1 Answer

Codes trouble olds engine troublecodes


quad driver A fault
ECM module have input and ouput, quad driver are there to activate a solenoid or relay
quad driver A drive a few of those output
example quad driver A control canister purge solenoid and the solenoid is defect . the quad driver will kick off until you change the solenoid
there is two kind of driver 1984 to .......one will reset if trouble is repair
the other one is the ecm module itself have to be change after is repair .....(quad driver act has a driver or big fuse)

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f497a301-5e49-4ecd-ae25-0ec3e6151d27.jpg
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I think i need to replace the crankshaft sensor on my 1992 grand am but i cant find it an im not sure if it'll fix it,it started off idling really odd like it was going to d I e first only in park


it could be misfiring, where did you get those codes? but the Crankshaft Position Sensor should be somewhere between the intake manifold and the firewall. The Quad Drive is electronics related, supposedly the most common cause of this code is the EGR valve (exhaust gas recirculation) and should be near the cylinder heads and are also said to be easy to replace. Quad Driver A module monitors the low speed fan, Evap canister purge solonoid, the HIGH TEMP light, and TCC apply. Quad Driver B module covers the shift solonoids and EGR valve.

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Apr 10, 2010 | 1994 Saturn Sl

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'92 olds 88/3.8 showing code 26. what does it mean


26 means: quad-driver module (computer) circuit #1 fault
replace the ECM.

Feb 19, 2010 | 1992 Oldsmobile 88

1 Answer

Have 95 saturn sl with code 26 and 27 quad driver


well the quad driver may not be at fualt and most likely is not.

there is a fualt line that the computer uses to monitor for fualts but the thing is one line monitors four different things and the code is to get you in the general area but not to the exact fualt. so from here you need to test for failed components. that code and the quad driver monitors the a/c , evap solniod , egr solenoid and coolant fan relay. the fan relay and egr are the most common i see all the time. and with you having an isssue with that coolant light i want to say check the fan circuit.

let me know if you have more question thank you and good luck

Nov 26, 2009 | 1995 Saturn Sl

1 Answer

What is code 26


It should be mentioned that the majority of the time a 26 is caused by a faulty CCP (charcoal cannister purge) solenoid.

http://www.differentracing.com/tech_articles/dtc/26.html

Apr 21, 2009 | 1995 Saturn Sl

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