99 chevy silverado 5.3 engine

Asked by Jan 06, 2015 at 12:33 PM about the 1999 Chevrolet Silverado 1500 3 Dr STD Extended Cab SB

Question type: Maintenance & Repair

motor will rev up high and then will almost die and it will do this only when you start it for
the first time when its cold out .we have tested egr valve is good,cleaned mass air flow
sensor,replaced idle air sensor and it still does it and ideas?air filter is new

1 Answer

it could be a few things. 1) is you check engine light on? if so what are the codes? 2) check your fuel pressure. it should be 55-58psi with key in the on position but engine off. these truck are notorious for fuel pumps going out. when you turn you key to the on position can you hear the fuel pump kick on? 3) check for intake manifold leaks. also a common problem with this truck. with your motor running, spray some intake cleaner($1.97 at walmart) around the intake area of the engine. IN SHORT BURSTS OF SPRAY!!! if your engine revs after you spray around you have a leak. I attached a picture of your intake... just in case you didn't know what im talking about I have the same truck and have faced the same issues feel free to email me lucas.a.bradshaw@lmco.com

Your Answer

Add photo

Related Questions

  • Tranny slip in my 5.3 chevy Silverado 2004 4 answers

    My 5.3 chevy Silverado tranny is slipping. I have a few engine mods. What could be the cause? I don't think I'm putting down that much power that the stock tranny can't handle

    2004 Chevrolet Silverado 1500 LS Ext Cab Short Bed 4WD

    -

    Maintenance & Repair

  • hard start when warmed up 99 silverado 5.3 15 answers

    MY SILVERADO PICKUP STARTS GREAT WHEN COLD BUT WILL NOT START WITH OUT CRANKING FOR PROBABLY AROUND 6 SECONDS. SOMETIMES MORE AND SOMETIMES LESS. IT WILL START BACK UP EASILY RIGHT AFTER YOU SHUT IT O...

    1999 Chevrolet Silverado 1500 3 Dr LS Extended Cab SB

    -

    Maintenance & Repair

  • 2003 Silverado 5.3 transmission problem 5 answers

    Hi I had question I have a 03 Silverado 5.3l and I'm having transmission problem it won't shift to 3rd and high rpms that was today, yesterday it was changing to all shifts only problem was it w...

    2003 Chevrolet Silverado 1500 Ext Cab Short Bed 2WD

    -

    Maintenance & Repair

  • What transmission do I need? 2001 Chevy Silveraldo 1500, 5.7 ext cab, long bed? 1 answer

    Need to replace trannie, I got the numbers off the one on my truck. 4L60E. I purchased one same number. Told it does not fit,it shorter than the old one. Does it matter if the truck is short bed or ...

    2001 Chevrolet Silverado 1500 Extended Cab LB

    -

    Maintenance & Repair

  • HORSEPOWER OF THE 5.3 18 answers

    HOW MUCH HORSEPOWER DOES THE 2004 5.3 L HAVE

    2004 Chevrolet Silverado 1500 Z71 Ext Cab Short Bed 4WD

    -

    General

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 1,830
#2 Silverado_owner_2006
Silverado_owner_2006
Reputation 1,520
#3 Rowefast
Rowefast
Reputation 1,470
View All

Related Models For Sale

Used GMC Sierra 1500
939 Great Deals out of 62,274 listings starting at $1,395
Used Ford F-150
2,690 Great Deals out of 212,354 listings starting at $1,000
Used Dodge Ram 1500
531 Great Deals out of 12,827 listings starting at $1,995
Used Toyota Tundra
584 Great Deals out of 30,729 listings starting at $2,637
Used Toyota Tacoma
619 Great Deals out of 35,127 listings starting at $2,155
Used Chevrolet Tahoe
772 Great Deals out of 28,452 listings starting at $1,500
Used Chevrolet Camaro
282 Great Deals out of 38,299 listings starting at $1,250
Used Ford F-250 Super Duty
398 Great Deals out of 45,077 listings starting at $2,000
Used Chevrolet Silverado 2500
10 Great Deals out of 317 listings starting at $3,995
Used Ford Mustang
362 Great Deals out of 44,486 listings starting at $1,000

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
29 Great Deals out of 95,497 listings starting at $16,928
2016 Chevrolet Silverado 1500 For Sale
250 Great Deals out of 8,012 listings starting at $16,375
2015 Chevrolet Silverado 1500 For Sale
240 Great Deals out of 7,126 listings starting at $15,977
2014 Chevrolet Silverado 1500 For Sale
405 Great Deals out of 10,933 listings starting at $6,990
2013 Chevrolet Silverado 1500 For Sale
225 Great Deals out of 5,931 listings starting at $8,495