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No start/ hard start / IAT reading -40f , coolant temp reading -74f , boost reading 38psi.. sounds like running on 2 cylinders

yeti

Well-known member
Joined
Oct 13, 2010
Messages
800
Location
san diego california
So the car was running fine today, I went to change the valve cover gasket and decided to add PCV system back to stock.

Did BLT , Cleaned injectors ( with eBay battery powered device ) and put in new injector seals.

Did BLT and holding pressure

Go to restart and just get a bunch of cranking.

Tried bump starting down 6 blocks the car would turn on but if I hit the gas it would die immediately.

Only way I got back home was to remove the intake to PCV line and let that breathe ( I started removing all new stuff or anything Changed once it wouldn’t start

Check logs and getting -40f IAT, -74coolant temp / 38psi Boost

Well that’s not right.

I’ve gone over the car physically and can’t see anything I did wrong or forgot.

I’m thinking it’s either my ecu frying/ some type of short circuit / or other electrical issue.

The fact that my logs are reading these screwed numbers LOCKED at idle means something correct?

Getting a CEL for coolant temp sensor circuit malfunction - this couldn’t cause this correct?

8E7DBCD3-33F0-40DA-A43D-35FCC9481EE4.png
 

turbofonz

Well-known member
Joined
Sep 27, 2006
Messages
464
Location
Granby, MA
Is the car on speed density? Did you unplug the speed density harness? Did you bump the thermostat housing ? All those seem like sensors are unplugged.
 

yeti

Well-known member
Joined
Oct 13, 2010
Messages
800
Location
san diego california
Is the car on speed density? Did you unplug the speed density harness? Did you bump the thermostat housing ? All those seem like sensors are unplugged.
Indeed I bumped the thermostat housing and made wires touch each other causing sensor ground.
 
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