Got a code 26 on my 93 firebird trans am it is the evap it is always runnin and causein car to run bad how do I fix

95

Asked by Jun 13, 2013 at 12:48 PM about the 1993 Pontiac Firebird Trans Am

Question type: General

16 Answers

Its a code 26, quad driver module fault

5 of 5 people found this helpful.

have to look up what this means exactly...same as you~

1 of 1 people found this helpful.

Got a quad carburetor?

1 of 1 people found this helpful.

hasn't got one of those belt-driven Oatmeal canister---the "air pump" to finish off any unburned gasses...was only a couple of years they used THIS smog device...this is a throttle body injection X 4?

95

It has a canister and is always running and when it finally shuts off car runs fine

1 of 1 people found this helpful.
95

Sounds like it is running anyway

1 of 1 people found this helpful.
95

Car is a 1993 with a 5.7 in it

3 of 3 people found this helpful.
95

Hope that helps you and thank you

1 of 1 people found this helpful.
1,625

Quad-Driver Module (QDM) #1 circuit applies to: - AIR pump relay circuit - EGR solenoid - EVAP solenoid

3 of 3 people found this helpful.
95

So how do I fix problem

inspect the EGR device, they can get crudded with carbon and not open on de-celeration...but stay open during acceleration...which is okay if we are trying to drop the combustion temperature (it's complicated and sucky)...but if it is malfunctioning will impeded correct air/fuel mixture from reaching combustion properly~

You can clean it with brake cleaner and put it back...you do not have to buy a new one~

1 of 1 people found this helpful.
95

Thank you to all who have helped me I will let you know if it fixes the problem thanks again

1 of 1 people found this helpful.
95

Where is the canister at

here's a closeup, then a scale view~ part three----that coffee can w/fittings~

1 of 1 people found this helpful.
1,625

That's the EVAP canister. The EGR Valve and Solenoid are located on the rear of the intake manifold.

1 of 1 people found this helpful.

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