SES light on after 5 sec along with both fans
Thread Starter
Member
Joined: Aug 2009
Posts: 197
Likes: 4
From: Serbia - BELGRADE
SES light on after 5 sec along with both fans
Hi guys,
I have a problem with LT1 engine swap (from 1993 Camaro into 1988 GTA). Problem is when I start the engine, after 5 seconds SES light is on along with both fans. When I try to check codes (with engine off), there is only code 12 that shows everything is OK
Is there a chance to check codes while engine is on, because only then I have SES light on?
I think that problem is because I don't have A/C at all, so maybe PCM think that A/C pressure is too high and turn both fans on, that's just my opinion
So, how can I found what trigger SES light and fans?
I have a problem with LT1 engine swap (from 1993 Camaro into 1988 GTA). Problem is when I start the engine, after 5 seconds SES light is on along with both fans. When I try to check codes (with engine off), there is only code 12 that shows everything is OK
Is there a chance to check codes while engine is on, because only then I have SES light on?
I think that problem is because I don't have A/C at all, so maybe PCM think that A/C pressure is too high and turn both fans on, that's just my opinion
So, how can I found what trigger SES light and fans?
Member
Joined: Dec 2010
Posts: 334
Likes: 0
From: Near Wichita Ks
Car: 1997 K1500 SS/SB
Engine: LT1 with TPI on top
Transmission: 4L60E/np241,
Axle/Gears: 3.73
Re: SES light on after 5 sec along with both fans
hopefully you know how to use a multimeter, if so check these wires at the PCM connectors these should all have either open or high resistance, D24 Evaporator temp, D12 AC Pressure Sensor, C25 Engine Collant Temp Sensor, . then check these system grounds for a 0 resistance to ground A2, C32, A18, D1. LET US KNOW
Thread
Thread Starter
Forum
Replies
Last Post
eightsixseven
Tech / General Engine
2
Dec 16, 2024 01:50 PM