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My son has a 1988 Chevy 1500 2wd with a 350 in it. It

Sent to Chevy Experts February 4 2008 at 2:19 PM
   

My son has a 1988 Chevy 1500 2wd with a 350 in it. It will not start if it is colder then 32 degrees out. What could the problem be? We have installed anew starter,plugs wires and a new serpentine belt on it.

 

Optional Information:
1988 Chevrolet 1500 350

Already Tried:
new starter,plugs,serpentine, had battery checked every seems to work and no problems with starting as long as it is nto to cold out. But we need it to start every day not just on some days.

Customer (name blocked for privacy)
Answer
February 4 2008 at 4:48 PM (2 hours and 29 minutes and 2 seconds later)
         
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Hello Decker A, you can either have an ignition or fuel problem. The spark can be weak not permitting the engine to ignite the fuel,or you may have a fuel delivery problem. The coolant sensor the computer the temperature, when cold the computer is supposed to richen the mixture . You should check to see if you have a good hot spark,it should be blue and jump a gap off at least a 1/2 inch. If not the ignition coil ,cap and rotor will have to be inspected.Also check the battery voltage while the engine is being cranked,it should remain above 9.6v. If it is lower the electriclal sytem will have to be tested. To check the coolant sensor,the truck will have to be let sit over night and the coolant temp read with as scan tool,it should read close to the outside temperature. If this reading is off it will give you the hard starting condition you describe.


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