Question about 1999 Oldsmobile Bravada

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Why does mi 1999 olds bravada shake on idle and feels like it wants to die.....

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It sounds like either your fuel pressure coming in to the fuel rail and the injectors, or your MAF (Mass Air Flow) Sensor. I would buy a can of brake cleaner and pop your intake hose off of your filter box, and spray a little on the sensor thats in there. May not solve the problem, but it will eliminate your MAF. Also go buy a can of Sea Foam. It is a fuel additive that cleans your system. Pour the whole bottle in your tank and run normally. It may clear up after a few trips. If neither of those work I would look at your fuel pressure regulator, and O2 sensors. Let me know. Thanks.

Posted on Mar 20, 2011

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1999 olds bravada misfires a couple of times before starting


Hello Angela Hylton,

I always go for the fire, fuel & air first... but it starts... so
that's a really great indication... Could just need some fresh spark plugs... (ACDELCO R44LTS6) or a cold start valve ...

(get your OBD codes read FREE (See below).

~~ 4.3L V6 Plugged EXHAUST:

I've never found an elegant way to prove it...
So we'll just jump right into...

GET some liquid wrench Penetrating Oil and
soak the EXHAUST to CATALYTIC converter bolts
really well (couple of times).

If YOU OPEN the exhaust and the engine runs smooth...
you have found a PROBEM that will do both thing you are experiencing...

Now you have to figure if it is the CAT collapsing or a
MUFFLER BAFFLE blocking the out-flow.

(It's
happened to me twice... but I'm pretty old)
((
one converter & one muffler))

FREE... (
to get you in the door)

Might be easier just to take it to a muffler shop...
and
have them run your engine codes...

If you live in CALIFORNIA... we have DIFFERENT
parts, costs & requirements (of course).

((
Somebody's BROTHER-IN-LAW is getting rich)).

But look up your prices on line... FIRST.
(know your prices BEFORE going in).

Hope this helps!!

http://www.rockauto.com/en/catalog/oldsmobile,1999,bravada,4.3l+v6,1356869,exhaust?a=Referer+www.ask.com+URL+%2F

1999 OLDSMOBILE BRAVADA 4 3L V6 Catalytic Converter RockAuto

1999 OLDSMOBILE BRAVADA 4 3L V6 Muffler RockAuto

More Information for ACDELCO R44LTS6

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1999 OLDSMOBILE BRAVADA 4 3L V6 Idle Air Control IAC Valve RockAuto

Dec 03, 2016 | Cars & Trucks

1 Answer

Just recently my 1999 bravada has started to shake in the rear what could be the problem?


Hello Jack, This is just a guess. I would check all of the tires for a bulge or bubble.

Mar 22, 2015 | 1999 Oldsmobile Bravada

1 Answer

I have a 2000 old bravada it is slugish and dies at stop lights and in the morning sometimes it wont start it backed fired


With idle issues, clean the throttle body and idle air system. How long since a tune-up? Check valve timing.

Are there any applicable trouble codes? Some of the national brand auto stores will check codes for free.

Feb 27, 2015 | 2000 Oldsmobile Bravada

1 Answer

1999 firebird has trouble starting after has ran already and sometimes shakes when idles and also has died but all elec.works fine. feels like powerloss sometimes as well


If v8 check the distributor behind water pump. Could be lea king on distributor. Fix is replace water pump and distributor

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Engine runs rough only in reverse


sounds like the idle is set a litle too high

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99 olds bravada. just replaced fuel pump 2 weeks


Aftermarket fuel pump failure? Try "thepartsladi" store on eBay for low price GM OEM parts. Could also be wiring harness to fuel pump.

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1 Answer

Shaking at idle


ck cyl compression cyl 2 or 3 is not fireing also could be stopped up intake

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