Why does my 2002 6.0 vortec engine idle rough and miss in cold weather after it's cranked

Asked by Jan 17, 2014 at 09:05 PM about the Chevrolet Silverado 2500HD

Question type: Maintenance & Repair

3 Answers

30

idle control valve

3 out of 3 people think this is helpful.
30

It's not the iac, changed mine and its the same. Also changed the MAS, MAP, Temp sensor, and fuel filter. Still runs rough on cold start ups but levels out when the truck hits running temp. Fuel pump?

3 out of 3 people think this is helpful.
340

Intake manif old gaskest

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

Silverado 2500HD

Looking for a Used Silverado 2500HD in your area?

CarGurus has 28,741 nationwide Silverado 2500HD listings starting at $2,295.

ZIP:

Search Chevrolet Silverado 2500HD Questions

Chevrolet Silverado 2500HD Experts

#1 Steven Loeffler
Steven Loeffler
Reputation 420
#2 FordNut
FordNut
Reputation 280
#3 Tom Demyan
Tom Demyan
Reputation 260
View All

Related Models For Sale

Used GMC Sierra 2500HD
135 Great Deals out of 13,625 listings starting at $1,500
Used Ford F-250 Super Duty
478 Great Deals out of 42,691 listings starting at $2,850
Used Chevrolet Silverado 1500
2,641 Great Deals out of 148,915 listings starting at $1,800
Used Dodge Ram 2500
177 Great Deals out of 5,625 listings starting at $2,395
Used Chevrolet Silverado 3500HD
122 Great Deals out of 8,795 listings starting at $8,995
Used Chevrolet Silverado Classic 2500HD
18 Great Deals out of 365 listings starting at $5,999
Used Ram 2500
193 Great Deals out of 30,083 listings starting at $9,500
Used Chevrolet Silverado 2500
6 Great Deals out of 257 listings starting at $4,200
Used GMC Sierra 1500
1,153 Great Deals out of 57,974 listings starting at $2,495
Used Ford F-350 Super Duty
466 Great Deals out of 26,817 listings starting at $2,000
Used Ford F-150
3,384 Great Deals out of 205,132 listings starting at $1,273
Used Chevrolet Silverado 1500HD
14 Great Deals out of 285 listings starting at $4,700
Used GMC Sierra 3500HD
61 Great Deals out of 3,963 listings starting at $8,995
Used Chevrolet Silverado 3500
32 Great Deals out of 637 listings starting at $6,200
Used Toyota Tundra
664 Great Deals out of 28,200 listings starting at $1,599