1995 1500 won't start up unless you poor fuel down the throttle body

Asked by Mar 02, 2019 at 04:05 PM about the 1995 Chevrolet C/K 1500

Question type: General

My truck won't start unless fuel is pored down throttle body

2 Answers

315

I would check that the fuel pump is operating. You should be able to hear the pump pre- start when the key is first turned on. If you can hear it I would be thinking fuel pressure regulator. Run the codes..

1 people found this helpful.
7,510

I looked at info for 5.0L engine. Note the diagram for fuel pump. Does the fuel pump run? You see the fuses, check those. You see the fuel pump oil pressure switch, it is wired in parallel with fuel pump relay. If that switch is functional and has voltage, when crank to bring up oil pressure a little, that switch closes and sends voltage to fuel pump, regardless of relay. At the fuel pump, gray wire is voltage and black is ground, you need voltage and ground. See the fuel injectors in diagram, top wire is voltage and bottom wire is ground. The computer grounds the fuel injectors in order to operate, voltage and ground. The fuel pressure spec for throttle body fuel injection is 9--13 psi. Another thought, if computer doesn't see rpm signal, it won't ground the fuel injectors. Is there a purple wire with white tracer coming from distributor, if so, that carries the rpm signal, engine cranking, dc pulse. If nothing there, pcm won't ground fuel injectors. Then you might have to suspect ignition module? Don't replace anything unless your testing points in that direction.

Your Answer:

Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    7,950
  • #2
    Rowefast
    Reputation
    4,520
  • #3
    John Saffrahn
    Reputation
    3,670
View All

Find great deals from top-rated dealersTM

Search

Related Models For Sale

Used GMC Sierra 1500
74 Great Deals out of 12,544 listings starting at $3,995
Used Ford F-150
128 Great Deals out of 12,922 listings starting at $1,000
Used Dodge Ram 1500
12 Great Deals out of 369 listings starting at $1,950
Used Chevrolet Tahoe
19 Great Deals out of 1,120 listings starting at $4,000
Used Toyota Tacoma
28 Great Deals out of 1,416 listings starting at $7,900
Used Chevrolet Camaro
21 Great Deals out of 1,180 listings starting at $8,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.