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Hello and thank you for Using Just Answer. I'm Paul and I will help you with your Question
there is a very common problem with intake gaskets causing rough idle cold
once the engine warms up the gaskets seal and it runs better
you should have the intake gaskets checked and replaced
let me know if you need more help
the engine has 124K mileage. Do i need to take the intake manifold off to inspect the gaskets?
you can spray around the intake with a flamable throttle plate cleaner with the engine running... the idle will change when you hit an area that has a vacuum leak... you need to do it when its very cold for best results... the intake gaskets are very common and there is an updated gasket part number #89017589. this will cause your exact symptom
So, you are telling me to spray the intake gaskets with a starter fluid and see if i can get a result.
If that is the case, then i will need to pull the intake and replace the gasket, right?
not starting fluid.. carb or throttle body cleaner
sometimes its hard to find the leak even spraying but it's your worth a shot
The part number listed above, is that for a Chev Tahoe 2002?
I am almost sure the intake is your issue
yes its for a 5.3 liter
what size do you have
thats the updated intake gasket
is it a big deal to pull the intake - i am familiar with working on older vehicles and used to getting dirty.
it's 2.5 hours labor
so not very big job
home job or take it to a mechanic - what do you think?
if you have removed intakes before I dont see why you couldn't do it yourself at home
but because labor is so law
maybe you would consider getting it done
to save yourself the headache
labor would run 250
cool. one more question - do you recommend doing a fuel injector top engine clean job with an engine with 124K? The deal says they will do it for $165.00 - don't know if that is what i should do.
Honestly I would check for the vacuum leak first and fix the intake gasket
if it was a fuel injector issue its not going to get better after warm up
I would only clean the injectors if you continue to have a rough idle after the intake is fixed
Got it - thanks for your help!
thank you for using Just Answer
Remember to click accept so I get credit for the answer. thanks... Paul
Let me know how you make out