4.3l problem starting

Asked by Jan 28, 2019 at 07:42 PM about the 1997 GMC Sonoma

Question type: Maintenance & Repair

My 97 sonoma with 4.3l takes time to start. At first itll
crank, then I turn key off and let fuel pump work and turn
key again and itll start. Some days it takes a bit longer to
start if I repeat those steps. Idk what it could be.

3 Answers

Sounds like fuel pressure sensor regulator usually located on fuel rail they are bad to get carbon build up, pretty easy fix if this is the problem. Could be a filter possibly even the pump but usually a pump just goes out suddenly not gradually. If it were me I'd pull the pressure sensor and spray it with carb cleaner and see if helps but if it's bad they are relatively cheap and easy to replace

10

Sounds like a purge vapor canister to me. If it seems to happen more often right after you fill up with gas. I'd try the purge valve. Your car sensing its flooded cause the canister is clogged. Cheap fix also.

Thank you, I'm going to try those and hope it works, also change my fuel filter. I appreciate it. Thank you

Your Answer:

Sonoma

Looking for a Used Sonoma in your area?

CarGurus has 1 nationwide Sonoma listings and the tools to find you a great deal.

Postal Code:

GMC Sonoma Experts

  • #1
    parkle
    Reputation
    910
  • #2
    Mike Bonnell
    Reputation
    540
  • #3
    James Mayfield
    Reputation
    350
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet S-10
7 listings starting at $5,600
Used Ford Ranger
12 Great Deals out of 1,032 listings starting at $3,950
Used Toyota Tacoma
29 Great Deals out of 1,482 listings starting at $4,867
Used Ford F-150
198 Great Deals out of 14,839 listings starting at $2,000
Used GMC Sierra 1500
87 Great Deals out of 11,824 listings starting at $2,800
Used Nissan Frontier
30 Great Deals out of 704 listings starting at $3,850
Used Dodge Dakota
95 listings starting at $4,000
Used GMC Yukon
16 Great Deals out of 1,144 listings starting at $2,000
Used Dodge Ram 1500
10 Great Deals out of 364 listings starting at $1,650
Used Chevrolet Blazer
1,243 listings starting at $1,000
Used Chevrolet Tahoe
14 Great Deals out of 924 listings starting at $6,871

Used Cars for Sale

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.