2003 GMC Sonoma Repair Question
GMC Sonoma Fuel pressure Problem
I'd use a noid lite and check for injector pulse, engine cranking. The autostore sells a noid lite. Check for voltage at the injectors, key on, pink wire. That circuit is fuse protected.
Ok thank you i will try that. I appreciate your time!
No problem. Let us know what you find.
I used my test light to check for voltage to the spider connector. There are 7 pink wires and all have power. I had someone crank the engine while i tested for a pulse on each wire. I got a pulse for each wire. The noid light doesn't connect to the spider connector. I could smell alot of fuel! I'm thinking fuel regulator is leaking? Thanks!
I thought your fuel pressure looked good. Any applicable trouble codes? Check the coolant temp sensor.
Part of the fuel pressure test is to bleed pressure down to 10 psi, monitor the fuel gage for 5 minutes. If pressure drops more than 2 psi, replace the pressure regulator.
I don't have a scan tool. so I can't check the codes. Can't afford a scan tool right now. I will check the coolant sensor. When I had the fuel pressure tester connected and stopped cranking.The pressure remained at 57 psi and didn't drop. Thanks again!
Usually, obd2 code readers don't cost much? I understand money issues. I have the same problem.
Ok my friend i will check that reader out. Thanks!
Let us know what you find.
I bought the code reader and no codes came up. I re checked the fuel pressure and it was below 50 psi....The first test was higher. So I'm going to change the fuel pump and filter. Thanks for getting back to me.....Paul