How can I tell if I have a aftermarket chip?
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How can I tell if I have a aftermarket chip?
My car doesn't run anywhere near the 220 mark like I believe it did factory. I'm running a 180 Tstat and my temp just barely goes above 1/4 of the gauge. Looks like 170ish to me. The pass fan turns on with the key and the driver turns on shortly after its been running. The sensor for the secondary fan is unplugged and broken but the secondary fan still turns on with the key. Where is the ecm in our cars? Its a 89 L98 Iroc. thanks
Joined: Dec 2004
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: How can I tell if I have a aftermarket chip?
take the access cover off the ecm and look
Joined: Dec 2004
Posts: 16,770
Likes: 1,001
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: How can I tell if I have a aftermarket chip?
the ecm is on the passenger side under the dash
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From: Delaware
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: How can I tell if I have a aftermarket chip?
Sounds like the secondary fan wire is touching metal/grounded somewhere. Mine did that once when the fan wire melted onto one of my headers.LOL
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iTrader: (2)
Joined: May 2009
Posts: 3,371
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From: Delaware
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: How can I tell if I have a aftermarket chip?
Take that wire and wire into a 12 V switch and then ground the other end and you'll be good.
Supreme Member
iTrader: (2)
Joined: May 2009
Posts: 3,371
Likes: 2
From: Delaware
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: How can I tell if I have a aftermarket chip?
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