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Customer: 95 toy 4 runner I've replaced both relays and bench tested the pump but the truck wont turn the fuel pump on. JA: How many miles are on the car? Has the car been starting normally? Customer: 200,000 rough miles this part of CA is a third world area JA: Are you fixing your 9-5 yourself? What have you tried so far? Customer: As I said I bench tested the f.p. for 45 psi and replaced the under hood relay with a known good relay and the paid 140.00 for the in dash relay with no change. Someone told me to replace the computer but before I do that I need to look for something that computer needs to see to start. I know gm and ford need to see oil pressure and good temp to start. JA: Anything else you want the mechanic to know before I connect you? Customer: I can't afford his time
Hello and welcome to JustAnswer!
There are several things that can prevent the fuel pump from running. It could simply be a blown fuse, there may be a wiring issue, and it's definitely possible that the problem could be the engine controller.
Have you checked fuses?
Have you checked for spark?
Hello and welcome to just answer, my name is ***** ***** master tech here to try and help. I cannot see or hear your vehicle so I rely on your patience and input to my questions so I can help you better. I read your notes and it seems we need to take this one step at a time. First we have to determine if you have spark and fuel pressure or lost one or the other or both.Then we need to keep it simple and attack one problem at a time.Toyota tells us [ KEEP IT SIMPLE STUPID] So first off, do you have a scanner that can read any codes and monitor any inputs?
aftermarket security systems are a nightmare , not worth the money. Good hunting I will recommend a refund as you found the issue so thanx for trying us and remember us in the future