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#1 |
Registered User
Join Date: Nov 2011
Location: Sandown nh
Posts: 29
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Check engine light ls swap
Any help would be great, so I just finished a ls swap on my wife's 70. I've replaced everything new waterpump, thermostat, hoses, temp sensor. The problem is it will kick on the check engine light saying it's a p1258 code (coolant temp sensor). The truck never goes over 200 mostly stays at 180 could it still be air pockets? I've ran it with the cap off and watched the flow and air bubbles come out but still problem exist really starting to get aggregated with it
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#2 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,515
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Re: Check engine light ls swap
Quote:
Did you remove the upper radiator hose and fill the engine with coolant through it? If you don't the location of the thermostat on the LS engines prevents the engine from completely filling. You have to fill it slowly...... Something to check anyway. LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - Last edited by LockDoc; 08-30-2016 at 01:13 PM. |
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