new chip problems?
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Joined: Aug 2012
Posts: 47
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From: madison wi
Car: 91 camaro rs
Engine: 350 tbi. Rv cam. Edelbrock headers
Transmission: stage 3 700raptor 2400 stall
Axle/Gears: 3.42 posi+disc brakes
new chip problems?
I need some help guys. I just put a 350 chip in my Camaro and now it is idling very high and the service engine soon light is flashing any ideas of the problem?
Joined: Mar 2006
Posts: 4,369
Likes: 17
Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: new chip problems?
Wrong EPROM, or inserted wrong.
The flashing CEL is indication that the EPROM is bad, not correct application, or inserted wrong, and is in limp home mode.
The flashing CEL is indication that the EPROM is bad, not correct application, or inserted wrong, and is in limp home mode.
Thread Starter
Junior Member
Joined: Aug 2012
Posts: 47
Likes: 0
From: madison wi
Car: 91 camaro rs
Engine: 350 tbi. Rv cam. Edelbrock headers
Transmission: stage 3 700raptor 2400 stall
Axle/Gears: 3.42 posi+disc brakes
Re: new chip problems?
OK I'll try flipping it around and see what happens
Joined: Dec 2004
Posts: 16,752
Likes: 996
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: new chip problems?
Unless its been changed to a 28 pin solder in d2 the prom will be in a Robinson nugent holder and can only go in one direction.
Thread Starter
Junior Member
Joined: Aug 2012
Posts: 47
Likes: 0
From: madison wi
Car: 91 camaro rs
Engine: 350 tbi. Rv cam. Edelbrock headers
Transmission: stage 3 700raptor 2400 stall
Axle/Gears: 3.42 posi+disc brakes
Re: new chip problems?
Alright it is in an rn holder but the chip isn't like the ecu has it but not the chip.
So now the ses light is just flat on and still high idle
So now the ses light is just flat on and still high idle
Joined: Dec 2004
Posts: 16,752
Likes: 996
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: new chip problems?
The prom notch allways goes towards the notch of the holder. If the mil is on check for codes. I have never put a prom in backwards it could be fried.
Thread Starter
Junior Member
Joined: Aug 2012
Posts: 47
Likes: 0
From: madison wi
Car: 91 camaro rs
Engine: 350 tbi. Rv cam. Edelbrock headers
Transmission: stage 3 700raptor 2400 stall
Axle/Gears: 3.42 posi+disc brakes
Re: new chip problems?
Yeah its fried I'm getting a memcal error code now
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Joined: Mar 2006
Posts: 4,369
Likes: 17
Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: new chip problems?
To say it is an absolute is not correct. While the EPROM is often damaged when inserted backwards, it is not always the case.
Last edited by Six_Shooter; Jun 4, 2013 at 06:53 PM.
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