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1989 F-250 460 FUEL-INJECTION WILL NOT-RUN

WILL NOT RUN REPLACED THE FOLLOWING-LOW PRESSURETANK FUEL PUMP-INLINE HIHG PRESSURE FUEL PUMP-BLEW OUT FUEL LINES-NEW FUEL-FILTER-NEW FUELREGULATOR NEW FUEL- INJECTORS-NEW ELECTICAL REGULATORS THE ONLYTHING I NEED TO REPLACE IS THE INERTIA FUEL SHUT OFF SWITCH BUT I DONT KNOW ITS LOCATION I GOT A LOT OF MAYBE ITS OVER THERE AND A LOT OF GUESSES I WOULD LIKE A FOR SURE SOME ONE THAT KNOWS THE LOCATION FOR SURE DO YOU KNOW THE INERTIA FUEL SHUT OFF SWITCH LOCATION FOR SURE AND CAN YOU HELP THANK-YOU

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  • Cars & Trucks Master
  • 1,449 Answers

The trouble is you need to start with the codes. and doing tests .like spark from the coil.ignition leads .then fuel. tests are then done .as the trouble can be your ECU has failed.or O2 sensor .that is why you start with your codes.

Posted on Dec 28, 2013

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Posted on Jan 02, 2017

  • 784 Answers

SOURCE: i have a 1991 corvette, it wont start. i can start

If there is not fuel going thru Fuel injectors, then it won't start. You can buy NOID lights at any auto store to connect to Fuel injectors to see if there is a problem with Fuel injector module. Here how the NOID lights look like:

http://www.tooltopia.com/index.asp?PageAction=VIEWPROD&ProdID=5334&utm_source=shopzilla&utm_medium=cse&utm_term=OTC3050C&utm_campaign=shopzilla_r1

You plug these into the connectors of Fuel Injectors to check during cranking. If there is light then your Fuel iinjectore Module is Good.
Then there is a problem with the Regulator. Here how it look like.
f50f96e.jpg

Posted on Sep 23, 2009

Testimonial: "very good thank you i will try it"

  • 15 Answers

SOURCE: 89 GMC K2500 5.7L TBI not spraying fuel

have you checked the coolant temp sensor? it controls air-fuel mixture.

Posted on Feb 04, 2010

  • 523 Answers

SOURCE: No Fuel??? Not starting.

You have fuel flow but the question now is are the injectors pulsing. Given the year of the truck my gut says your ECU, Engine Control Unit, has failed. Mitsubishi had issues with the capacitors in their early 90's cars, trucks SUVs. I have been thru this with two monteros and one 3000GT, very common. To check your injectors rent a set of NOID lites from Autozone our such. Remove an injector plug and itstall a noid light. Turn the engine over, if no flash, no pulse. Remove the ECU and carefully open it up. Look for the capacitors, there should be 3, look under the capacitors on the board; if there is a grease like substance, often time it has a green hew to it, then the capacitor(s) have failed. It may be possible to replace the capacitors or simply purchase a rebuilt ECU. Be ceratin the MD number matches on the new unit.
Please let me know your results and if this had assisted you.
Thanks, Tom

Posted on Apr 25, 2010

Testimonial: "Thanks! I will try your ideas and get back to you shortly!!!"

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This will solve the problem or point you towards the cause of problem. Thank you for using fixya.

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