Coolant temp sensor gets power, but signal wire reports no voltage? - Ford Mustang Forum
 
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post #1 of 7 (permalink) Old 02-07-2005 Thread Starter
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Coolant temp sensor gets power, but signal wire reports no voltage?

I finally managed to get my computer to output the codes and it gave me an error code for the engine coolant temperature sensor being out of range (engine off). I checked the Green/yellow wire and it receives power. The sensor does not have any voltage from the black/white wire, warmed up or cold, off or running.

Is this a sign of a bad sensor ?


89 GT Hatch: Custom M90 Supercharged w/ Ported Trickflow Trackheat Heads, Stage 1 cam, Streetheat lower / Sheet metal upper, Tweecer RT & PLX Wideband, 75mm TB, 1.6 Roller rockers, 3.73s, MSD 6a, Canton 7qt Pan+ Windage tray, 36LB Injectors, 200 amp Alternator, 75mm Pro-Mas MAF, 190lph fuel pump,Spec Stage 1 Clutch,SouthSide LCA's, Pro 5.0 Shifter, Steeda CC Plates / Springs, FMS Aluminum Driveshaft, New T5 w/ 2.95 first gear, Underdrive pullies, Zirgo 3300Cfm Elec. Fan, AFCO alum. radiator
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post #2 of 7 (permalink) Old 02-07-2005
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Yep, its dead


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post #3 of 7 (permalink) Old 02-07-2005 Thread Starter
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Nooo say it ain't so.....

Ok what's a better brand, GP Sorenson or Borg Warner sensors?

89 GT Hatch: Custom M90 Supercharged w/ Ported Trickflow Trackheat Heads, Stage 1 cam, Streetheat lower / Sheet metal upper, Tweecer RT & PLX Wideband, 75mm TB, 1.6 Roller rockers, 3.73s, MSD 6a, Canton 7qt Pan+ Windage tray, 36LB Injectors, 200 amp Alternator, 75mm Pro-Mas MAF, 190lph fuel pump,Spec Stage 1 Clutch,SouthSide LCA's, Pro 5.0 Shifter, Steeda CC Plates / Springs, FMS Aluminum Driveshaft, New T5 w/ 2.95 first gear, Underdrive pullies, Zirgo 3300Cfm Elec. Fan, AFCO alum. radiator
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post #4 of 7 (permalink) Old 02-07-2005
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post #5 of 7 (permalink) Old 02-07-2005 Thread Starter
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Ok, I put on a new sensor and the car seemed to run like crap at first and seems to be running ok. Should I reset the computer so it can relearn from scratch ?

89 GT Hatch: Custom M90 Supercharged w/ Ported Trickflow Trackheat Heads, Stage 1 cam, Streetheat lower / Sheet metal upper, Tweecer RT & PLX Wideband, 75mm TB, 1.6 Roller rockers, 3.73s, MSD 6a, Canton 7qt Pan+ Windage tray, 36LB Injectors, 200 amp Alternator, 75mm Pro-Mas MAF, 190lph fuel pump,Spec Stage 1 Clutch,SouthSide LCA's, Pro 5.0 Shifter, Steeda CC Plates / Springs, FMS Aluminum Driveshaft, New T5 w/ 2.95 first gear, Underdrive pullies, Zirgo 3300Cfm Elec. Fan, AFCO alum. radiator
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post #6 of 7 (permalink) Old 02-07-2005
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ghost; you dont have to reset the computor,all should be fine once you cut it down and she cools off once you restart when its cold and the coolant warms the comp will get its signal from the sensor and acknowledge.
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post #7 of 7 (permalink) Old 02-08-2005
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That sensor is the reason you want to have your engine fully warmed up
when you do the Engine Running test.

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