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pwee prado Posted on Jun 14, 2013
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Wont start my 95 chevy tahoe wont start unless i spray a lil bit of starting fluid i jus change the fuel pump the injectors are sprayin good

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Marvin

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  • Cars & Trucks Master 85,242 Answers
  • Posted on Jun 14, 2013
Marvin
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Joined: Jun 20, 2008
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The injectors can't be spraying good or it would start. What is the fuel pressure reading?

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Sep 16, 2008

SOURCE: wont start without starting fluid

Could it be a plug up injector , have sewiing needle , stick it in the sprayer part of the injector on the carberator part

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Anonymous

  • 40 Answers
  • Posted on Mar 19, 2009

SOURCE: 95 chrysler lebaron gtc 3.0 starts for a second and then stalls out

What is the fuel pressure reading at the fuel rail?

Anonymous

  • 1071 Answers
  • Posted on Aug 19, 2009

SOURCE: 1997 Kia Sportage wont start

check to see if timing belt has jumped

gerry bissi

  • 4390 Answers
  • Posted on Aug 27, 2009

SOURCE: i have fuel pressure but the engine wont start

Not likely. I believe the injectors have 12 volts going to them all the time. The PCM then grounds them so they operate when the crankshaft or camshaft sensor tell the PCM when the cylinder is on compression stroke.

I would check for an injector fuse first (see owner manual), and then check to see if you have a bad crank or camshaft sensor.

The PCM very rarely fails.

Section 03-14: Engine Controls, Electronic 1994 All Aerostar, Ranger, and Explorer Vehicles Workshop Manual
DESCRIPTION AND OPERATION Powertrain Control Module (PCM) The center of the EEC-IV system is a microprocessor called the powertrain control module . It receives data from various sensors:

  • Throttle position sensor (TP sensor) (9B989)
  • Mass airflow sensor (MAF sensor) (12B579)
  • Intake air temperature sensor (IAT sensor) (12A697)
  • Engine coolant temperature sensor (ECT sensor) (12A648)
  • Heated oxygen sensor (HO2S) (9F472)
  • Camshaft Position (CMP) Sensor
  • Crankshaft position sensor (CKP sensor) (6C351)
  • Power Steering Pressure (PSP) Switch
The powertrain control module contains specific calibrations for optimizing emissions controls, fuel economy, and driveability. Based on information received and programmed into its memory, the processor sends signals to control various actuators:
  • Fuel injector nozzle tip (9E527)
  • Ignition coil (12029)(s)
  • Idle air control valve (IAC valve) (9F715)
  • Ignition control module (ICM) (12A297)
  • EGR vacuum regulator control (9J459)
  • EGR external pressure valve (9F483)

Anonymous

  • 4088 Answers
  • Posted on Sep 14, 2009

SOURCE: Hi ,I have a chevy blazer s-10 1993 and she won't

Find the pressure test port (looks like a tire valve) on the fuel distribution rail over the injectors and place a can over the open end of the valve. Press the inner pin to release fuel into the can. If the pressure seems to fall rapidly, replace the fuel filter. Is the check engine light on? Rent a scanner, read any code(s), and pursue to repair(s). A bad crankshaft sensor or camshaft sensor can prevent the injectors from firing fuel into the engine.

Testimonial: "Tank's I will do it ,& I let you Know ,tanks again,George"

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Related Questions:

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1answer

My 97 chevy astro wont start when cold but well when i spray starting fluid in the intake ive changed every thing in the fuel system including the pump

what is the fuel pressure with key on and engine off? since you mentioned spider injector assembly it has to be a vortec engine that requires 55psi to open the poppet valve in the injectors just to start.
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95 chevy Tahoe will not start, has spark at the coil cranks over fine and gas.

Hi Jonathan, Make sure you have injection as well as fuel in the rail. Sometimes the anti theft unit will cut the injection and therefore the vehicle cannot start. have the vehicle scanned and then rectify what ever defects and faults show up. Another reason for nil injection could be a defective cam or crank sensor. Sometime removing and cleaning them will work. Regards John
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My 95 tahoe starts but dont stay on. Fuel wont stay pumping from tbi. Just swapped a motor from 80's camaro. Was running real good in box chevy perfect. Now fuel wont stay flowing out of injectors. Already...

did you install the oil pressure switch origional to the tahoe? The tahoe uses a low oil pressure shutdown, instead of an inertia switch to shut off the fuel pump in the event of an accident. If the pressure circuit does not close within 3 seconds after the engine starts the fuel pump shuts off. This is in case the truck is on its side or upside down the pump will shut off.
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My 1999 Chevy Tahoe wont start unless i spray starting fluid into the air intake but once it starts it runs fine, The fuel filter is brand new in it too, if it is the fuel pump how much will it cost me?

It is not a fuel pump problem.
It a cold start valve problem. It didn't open. There are 2 things to check.
1- The cooling thermal sensor is not sending the proper signal to the ECU to turn on the cold start valve.
2- The bad solenoid inside the cold start valve causing it not operational.
Case 1 you can easily replace the thermal sensor.
Case 2 checking this requires professional skill to confirm if there is a signal at the valve during the start.
Good luck

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1999 chevy tahoe starting problem

i have a 99 5.7 chevy suburban and have to use starting fluid for it to turn on , ive replaced the fuel reg. and fuel pump is 4years old fuel filter 6months old new cam and crank sensor new distrbutor rotor and cap
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1987 chevy s10 2.5l tbi will not start. changed bad fuel pump works well now strong pressure to throttle body. change fuel pressure switch, oil pressure switch, o2 sensor, map sensor, distrib cap, rotor,...

That eliminates the crankshaft and camshaft position sensors. Have you checked the fuel injector itself for an open winding or stuck valve plunger? There should not be a steady 12 volts to the injector--if good injector, it would be spraying fuel steadily into the throttle body. But at least the engine should try to run if poorly. Take the injector out, dry it off with air, and intermittently apply 12 volts to one terminal while grounding the other. You should hear a click from inside every time you touch 12 volts. If not, replace it. If it does, it may be plugged with debris. Try blowing through it in reverse with compressed air.
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Wont start unless primed with starting fluid

Sounds like no gas reaching the motor. Could be fuel filter or fuel pump. I would recommed you disconnect the fuel line and start car to see if fuel is coming up if it is then ur injectors r clogged or no good if nothing comes up u know is pump or filter I would change both.
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