coolant temp sensor at manifold....

[donkeypunch]

I finally found a replacement with the new pigtailand it turned the check engine light off but it comes back on after driving for a while and is throwing that same code......any ideas? My bypass hose looks kinked and needs replaced but would that cause the temp sensor to throw codes?

As always thanks fellas for any advice.

 

[heavyleft]

Which code exactly is it throwing?

 

[donkeypunch]

Which code exactly is it throwing?

Just the 1-3 which if I remember only refers back to the sensor right? The thing is it does not throw right away, it only comes on when the truck hits 170 degrees....at least I made that mental note when it came on last.

 

[donkeypunch]

Just the 1-3 which if I remember only refers back to the sensor right? The thing is it does not throw right away, it only comes on when the truck hits 170 degrees....at least I made that mental note when it came on last.

Ok it looks like I was mistaken....1-3 refers to an o2 sensor? I got this truck thinking it never had them because they were not in....the PO hacked out the cat. and must have removed the 02s also? Where would I find the wiring for those on the truck and did all tbi's have them or could his be a wild goose chase?

 

[heavyleft]

Just the 1-3 which if I remember only refers back to the sensor right? The thing is it does not throw right away, it only comes on when the truck hits 170 degrees....at least I made that mental note when it came on last.

Code 13....assuming you did the redneck check on your OBD port and your check engine light flashes once, then three times qiuckly....is for your oxygen sensor.

 

[heavyleft]

If you didnt know.....

The "redneck" obd1 cel way to check it is a paperclip or small U shaped piece of metal. On your obd1 port you insert the clip into the top two right hand holes. It will blink once then twice indicating code 12 which means your ecm diagnostics is working properly. Then it will blink the appropriate code. Like o2 sensors is 44 so it would flash four times pause then four more times indicating 44

GM OBD-1 Diagnostic Trouble Codes

For 1995-previous model year EFI-equipped GM vehicles. NOTE: Some codes not supported on all models, consult your specific vehicle's service manual for the correct trouble code list and description for your application.

DTC - 12 No distributor reference pulse (diagnostic test active)

DTC - 13 Oxygen sensor circuit open or no activity

DTC - 13 Left bank O2 sensor circuit open or no activity

DTC - 14 Engine coolant temp sensor error (high temp indicated)

DTC - 15 Engine coolant temp sensor error (low temp indicated)

DTC - 16 System voltage too low

DTC - 17 Camshaft position sensor error

DTC - 21 Throttle Position sensor error (signal high)

DTC - 22 Throttle position sensor error (signal low)

DTC - 23 Intake air temp sensor error (low temp indicated)

DTC - 24 Vehicle speed sensor error (open circuit or no activity)

DTC - 25 Intake air temp sensor error (high temp indicated)

DTC - 26 Quad Driver Module (QDM A) error

DTC - 28 Auto transmission range pressure switch error

DTC - 31 Wastegate solenoid circuit error

DTC - 31 Gear Position Switch (PRNDL) error

DTC - 32 EGR system failure

DTC - 33 MAP sensor circuit error (signal high indicating low vacuum)

DTC - 34 MAP sensor circuit error (signal low indicating high vacuum)

DTC - 35 IAC problem or idle error

DTC - 36 MAF sensor error

DTC - 36 24x Crankshaft position sensor circuit error

DTC - 36 4T60-E Shifting Error

DTC - 37 TCC brake switch circuit error

DTC - 38 TCC brake switch circuit error

DTC - 39 Clutch switch circuit error

DTC - 39 TCC error

DTC - 41 Ignition control error

DTC - 41 MEM-CAL error

DTC - 41 C³I Cam Sensor Signal error

DTC - 42 Ignition bypass circuit error

DTC - 43 Knock sensor error

DTC - 44 Oxygen sensor error (lean condition indicated)

DTC - 44 Left bank O2 sensor error (lean condition indicated)

DTC - 45 Oxygen sensor error (rich condition indicated)

DTC - 45 Left bank O2 sensor error (rich condition indicated)

DTC - 46 Pass-Key II (VATS) system error - circuit out of freq range

DTC - 47 UART (serial data) circuit error

DTC - 51 PROM error

DTC - 51 Incorrect MEM-CAL

DTC - 52 Fuel cal-pak incorrect or missing

DTC - 53 System voltage too high

DTC - 53 Digital EGR Valve solenoid 1 error

DTC - 54 Fuel pump circuit low voltage

DTC - 54 Digital EGR Valve solenoid 2 error

DTC - 55 ECM error

DTC - 55 Digital EGR Valve solenoid 3 error

DTC - 56 Quad Driver Module (QDM B) error

DTC - 57 Boost Control error

DTC - 58 Trans fluid temp sensor circuit error (low voltage)

DTC - 58 VATS system error

DTC - 59 Trans fluid temp sensor circuit error (high voltage)

DTC - 61 A/C system performance

DTC - 63 Right bank O2 sensor circuit error

DTC - 63 MAP sensor circuit signal voltage high (low vacuum indicated)

DTC - 64 Right bank O2 sensor lean exhaust indicated

DTC - 64 MAP sensor circuit signal voltage low (high vacuum indicated)

DTC - 65 Right bank O2 sensor rich exhaust indicated

DTC - 66 A/C pressure sensor circuit error (low pressure indicated)

DTC - 67 A/C pressure sensor circuit error

DTC - 68 A/C clutch relay circuit error (shorted to ground)

DTC - 69 A/C clutch relay circuit error (open circuit indicated)

DTC - 69 A/C high pressure switch error

DTC - 70 A/C pressure sensor circuit error (high pressure indicated)

DTC - 71 A/C evaporator temp sensor circuit error (low temp indicated)

DTC - 72 VSS signal circuit error

DTC - 73 A/C evaporator temp sensor circuit error (high temp indicated)

DTC - 75 Digital EGR solenoid #1 circuit error

DTC - 76 Digital EGR solenoid #2 circuit error

DTC - 77 Digital EGR solenoid #3 circuit error

DTC - 79 Transmission fluid overtemp

DTC - 80 Transmission component slipping

DTC - 82 3x Crankshaft position sensor circuit error

DTC - 85 PROM error

DTC - 86 A/D error

DTC - 87 EEPROM error (flash memory error)

DTC - 90 TCC error

DTC - 93 Transmission pressure control solenoid circuit error

DTC - 96 Transmission system voltage low

DTC - 98 Invalid PCM program

DTC - 99 Invalid PCM program