dkesler Posted August 21, 2013 Share Posted August 21, 2013 1999 CH613 has 80psi fuel pressure at the filter and cranks fast but won't start without ether. There are 4 Power Relays on the left side of the panel in front of the passenger seat. The top relay clicks while cranking the motor. The relays all have 9823310 printed on them. Does anyone know what the top relay feeds? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/32399-e7-wont-start/ Share on other sites More sharing options...
Solution turckster Posted August 21, 2013 Solution Share Posted August 21, 2013 The top relay(Relay #1) supplies voltage to fuses 16, 17, 18, 19, 26, 27, 28, 29, 31.Next down relay(Relay#2) feeds fuses 20, 21, 22, 23, 24, 25, 30.Relay#3 (next down) feeds fuses-40, 41, 42, 43Relay #4 feeds fuses-44, 45, 46, 47Fuse #40 is for the engine ecuNow, having said that, make sure the ground relay is good. It may be popping open while cranking the engine. It is usually caused by a shorted/bad starter (pulling too much amperage). The either shot spins the engine faster and the starter is barely pulling any amperage,so the ground relay stays engaged. A quick way to tell is to install a heavy gauge jumper on the ground relay studs, if the engine starts--there you go. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/32399-e7-wont-start/#findComment-200912 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.