My son just purchased a 1985 Chevette with 1.8 Diesel engine. The previous owner told him that it needed a glow plug relay. What is that? How many are there on this engine? Is that the same as a glow plug?
Are Glow plug relays like spark plug wires and glow plugs like spark plugs?
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the fuel pump and timing belt are not components for spark did you check distributor- points -coil -plugs-wires ignition switch -fuses and relays ----didnt specify engine if diesel need to check glow plugs
This could most likely be one of 2 things, 1. if it is your maintainance light, it is probably one of your sensors, possibly the mass air filter sensor, oil pressure sensor, and 2. If it is a diesel engine and its the glow plug light, you would need to replace your glow plug relay because it telling you that the glow plugs are still on when the engine is running, which you should take care of asap before you have to replace the glow plugs themselves.
The relay should cost about $35-45. A common Ford Starter relay can be used in place of the official glow plug relay. All that is required is a relay with terminals that have 5/16 or 3/8 terminals and can carry about 150-200 amps. When all 8 glow plugs turn on, it draws about 150 amps is all. There are two relays for the 7.3 diesel. One energizes the glow plugs and the other energizes a heating element in the air intake. That one is used to help eliminate white smoke while warming up and is turned on and off by the engine computer. It is usually only called for when the temperature is 20 degrees F or lower. Otherwise only the glow plug relay works.
They make two relays that will fit but only one will work. Call 772 283-8999 ask for John, He will tell you more than you really want to know, the dude is about the best diesel mechanic I know. You can email him at firstname.lastname@example.org. Tell him Peppi told you to contact him. If John is not available ask for Ron, he is better at GMC products ( no one is perfect ) but he can help you as well. They are real good guys and will take the time to help and can get parts for anything. Hope this helps