1999 tahoe LT 5.7 high mileage stumbles when cold

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

L O Guvna

TYF Newbie
Joined
Jan 31, 2022
Posts
7
Reaction score
1
Not sure this is the right section. My tahoe has running issues when first driving. Start engine, put in drive, drive off. Drives like it is low on fuel, air. Engine needs to warm up - short period maybe a minute, and then it drives fine.

Been like this for a while. I've had my regular mechanic fiddle with this. We have changed fuel pump, plugs, cap, rotor, and coil. He also replaced some sensors on the systems for cold start.

Wondering if others have had this. Not a fan of the dealership - i don't mind them giving me an estimate, but those guys will want to restore the car for 10s of thousands of dollars.

Motor, while tired, is in great shape, very strong when running after warmed up.

thanks folks,

Chris
Dallas
 

Eman85

Full Access Member
Joined
Apr 18, 2021
Posts
433
Reaction score
637
Fiddling, not a professional term.
What is the fuel pressure? Any codes? What are the coolant temp readings on the scan tool when cold,hot?
 

Forum statistics

Threads
131,405
Posts
1,850,448
Members
95,496
Latest member
dap365
Top