What would cause my 95. Chevy truck to start And run briefly then shut off.good fuel good spark

Asked by Sep 08, 2016 at 10:12 AM about the 1995 Chevrolet C/K 1500 WT Standard Cab LB

Question type: Maintenance & Repair

Truck starts and runs briefly them dies out.have replaced ICM,iidlemid sensor
map sensor fuels regulator fuel filter and ecm box.nothing has I helped.I'm at
wits end.any suggestions.its a 4.3 vortec tbi

9 Answers

960

The first thing I would check it the oil pressure switch. I think it has two. One by oil filter and one by distributor. It's been a while since I have worked on one but I remember their being a problem with one of them to make the truck do what you have going on. I would first look at on by distributor

Checked them already but thanks

960

Ok well do have means to check the fuel pressure ? See if it goes away to make engine stop running. Can you keep the motor running if you give keep it above idle. Or is it like you are turning the key to the off position.

Runs above idle if you keep hittingnthe gas but very rough.cut off as soon as you stop pumping the pedal

960

Just going to throw this out. It almost sound like you have a big vacuum leak. Check intake boots very close for a tear. Then try unplugging the mass air flow. Not sure it that year has one but if it does try it. See if it idles any

Did that first

Wow just forms shits and giggles I unplugged the map sensor vacu um again and Its running fine?sprayed the engine with carb cleaner and can't find any leaksin vacuum though?

960

You put a new map on it ? If so, has same problem with old sensor ? Almost sounds like you got a bad new map sensor

She idles OK but still won't run in gear I might try another. Map sensor

Your Answer

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 853 nationwide C/K 1500 listings starting at $2,000.

ZIP:

Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    3,600
  • #2
    John Saffrahn
    Reputation
    2,570
  • #3
    Rowefast
    Reputation
    2,170
View All

Related Models For Sale

Used GMC Sierra 1500
890 Great Deals out of 65,682 listings starting at $1,995
Used Ford F-150
2,328 Great Deals out of 184,536 listings starting at $699
Used Chevrolet C/K 2500
199 listings starting at $2,598
Used Dodge Ram 1500
361 Great Deals out of 10,960 listings starting at $1,500
Used Chevrolet C/K 3500
227 listings starting at $4,999
Used Chevrolet Tahoe
648 Great Deals out of 39,638 listings starting at $1,000
Used Toyota Tacoma
632 Great Deals out of 43,278 listings starting at $1,500
Used Chevrolet S-10
6 Great Deals out of 1,205 listings starting at $2,500
Used Chevrolet Camaro
426 Great Deals out of 30,917 listings starting at $3,550

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.