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Chevrolet Camaro Z26: . I'm helping my brother-in-law with…

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Hi. I'm helping my brother-in-law...
Hi. I'm helping my brother-in-law with his 1996 Camaro Z26 6spd which is throwing a SES light after about 1 hour of driving. Fault codes have been read, allthough with and old VAG fault code reader (only one i have that can read OBD1), and the codes are for the EGR valve, short circuit. Seems weird when the EGR on this car is a vacuum unit without any electrical components... I will get different error codes if i disconnect the solenoid for the EGR (P0403), but seemingly no error codes when disconnecting the vacuum hose for the EGR. Car has a 3" (i think) cat-back exhaust... We're growing a bit tired of this problem now, been trying to fix it for 2½ years...
Submitted: 3 years ago.Category: UK Car
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Answered in 1 hour by:
5/25/2015
UK Auto Mechanic: Dave Nova, ASE Certified Tech replied 3 years ago
Dave Nova
Dave Nova, ASE Certified Tech
Category: UK Car
Satisfied Customers: 19,452
Experience: ASE Master Certification. GM World Class Certification
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What is the trouble code that is currently setting?
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Customer reply replied 3 years ago

Right now, with Everything connected, the error code is P1403 i Believe (forgot to take a pic of it), with the electrical Cable to the solenoid pulled out i get P0403.

UK Auto Mechanic: Dave Nova, ASE Certified Tech replied 3 years ago
With the key on, do you have voltage on the Brown wire at the egr vacuum solenoid?
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Customer reply replied 3 years ago

I haven't checked that out, i'll have to wait for him to come by with the car.

I'll report back to you as soon as i've checked the voltage on the Brown wire!

UK Auto Mechanic: Dave Nova, ASE Certified Tech replied 3 years ago
Sounds good. I will look forward to your response.

Dave
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