Stumped!!!! Please Help
Thread Starter
Instructor
Joined: Sep 2012
Posts: 211
Likes: 2
From: Lincoln Nebraska
Stumped!!!! Please Help
So a month and a half or so ago I installed a cam,intake,LS2 throttle body,fuel rails and bigger injectors,had the computer flashed and after wiring up the nitrous gauge,bottle heater ect.....now the car throws a P0118 and p0200 witch are a engine coolant temp sensor and a injector control circuit. I've checked fuses, some say it could also be the injector wiring rubbed threw the fuel rail and that's all fine. I changed the temp sensor and that's not it...... So idk this is frustrating bc I haven't really been able to drive the car and it's so nice out and I'm stuck driving my daily driver PLEASE HELP IF U CAN
Thread Starter
Instructor
Joined: Sep 2012
Posts: 211
Likes: 2
From: Lincoln Nebraska
Yea the gauge on the dash at first reading 100 then shoots up to 260 if there is two temp sensors where is the second one at bc I only replaced the one on the drivers side?
Instructor
Joined: Sep 2013
Posts: 132
Likes: 1
From: Dallas Texas
I believe there is an engine oil temp sensor above the filter but after an install like you did I would suspect a broken coolant temp sensor which is located left cylinder head behind alternator. I broke mine after LT header install. Symptoms were a digital coolant temp readout of xxx and the analog gauge was pinged out.
Thread Starter
Instructor
Joined: Sep 2012
Posts: 211
Likes: 2
From: Lincoln Nebraska
I believe there is an engine oil temp sensor above the filter but after an install like you did I would suspect a broken coolant temp sensor which is located left cylinder head behind alternator. I broke mine after LT header install. Symptoms were a digital coolant temp readout of xxx and the analog gauge was pinged out.
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Instructor
Joined: Sep 2013
Posts: 132
Likes: 1
From: Dallas Texas
After I replaced the sensor twice I figured it must have been the wiring. While the car was running I moved the sensor wires around a bit and the car started studdering and died. Give that a try!
Thread Starter
Instructor
Joined: Sep 2012
Posts: 211
Likes: 2
From: Lincoln Nebraska
Racer
Joined: Feb 2014
Posts: 328
Likes: 0
From: South River NJ
Unplug the sensor and see what the dash reading shows. Then take a paper clip or small piece of wire and short the connector, see what the dash shows. You are simulating the temperature extremes between full cold and full hot (around -40F and +260F).
Racer
Joined: Feb 2014
Posts: 328
Likes: 0
From: South River NJ
By the way, if you own a DVM, you can measure the voltage at the connector (when it is unplugged from the sensor). You will read +5 volts between the two pins. It is current-limited internally inside the ECM so don't worry about shorting anything.
Thread Starter
Instructor
Joined: Sep 2012
Posts: 211
Likes: 2
From: Lincoln Nebraska
Ok will do right know and I'll get back to everyone and let u GUYZ know thanks again for all the help
Thread Starter
Instructor
Joined: Sep 2012
Posts: 211
Likes: 2
From: Lincoln Nebraska
Well just to keep everyone informed I think I'm to the end of patients so I think I'm going to have to take it n to a shop...... I think this will be the first time I've had todo that
Race Director
Joined: May 2006
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From: EAST TENNESSEE
Drifting
Joined: Sep 2009
Posts: 1,719
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From: cinnaminson n.j.
St. Jude Donor '14
Did you check the PCM connector terminals? There have been corrosion problems caused by battery acid.
Did you follow Bill's recommendations? If you take it to the wrong shop or dealer, you could pay a lot to get it fixed, or not.
Did you follow Bill's recommendations? If you take it to the wrong shop or dealer, you could pay a lot to get it fixed, or not.