The Stupid Engine Questions Thread

[joshsb]

1993 c1500 4.3 5 speed

 

[Encoreman]

Hi I have a 93 Z-71 stepside with 260K on 5.7. I just bought and installed a 95 5.7 out of a clean 135K truck. I have run into a few differences like the 95 water pump had barb for heater hose. My question is concerning the computer, will I need to do anything because of the OBD 1 and OBD 1.5 differences? Please keep responses simple as I am not a computer geek. Thanks for any input, plan on firing the engine tomorrow. Mac

 

[beardeddummy]

Which coolant sensor sends to the computer and which is for the gauge

 

[skylark]

The one in the driver's side head goes to the gauge. The one by the thermostat goes to the computer.

 

[Justin S]

The gauge sensor is a 1 wire, and the computer sensor is a 2 wire. Most parts stores for some reason always try and sell you the 2 wire one regardless of which you ask for FYI

 

[Justin S]

Hi I have a 93 Z-71 stepside with 260K on 5.7. I just bought and installed a 95 5.7 out of a clean 135K truck. I have run into a few differences like the 95 water pump had barb for heater hose. My question is concerning the computer, will I need to do anything because of the OBD 1 and OBD 1.5 differences? Please keep responses simple as I am not a computer geek. Thanks for any input, plan on firing the engine tomorrow. Mac

Not really sure what you are referring to as OBD 1.5, but as long as the engine from the 95 you put in is TBI and everything plugs in, shouldn't be a problem.

 

[beardeddummy]

Thanks Justin s and Skylark

 

[JakeZ71]

Help!! I have a '98 k1500 Z71 with the 5.7l motor. I just swapped in a 5.7l out of a '99 classic that was identical in appearance to my Z71. I got it all put back tgether, and now it wont start. The solenoid won't engage. You turn the key, the dash lights up, and nothing else happens. What am i missing?! Thanks

 

[Justin S]

Check to make sure you hooked up the starter signal wire if you're not hearing anything

 

[JakeZ71]

Thank you for answering back so quickly.
Where is the starter signal wire?