Car idleing low! (Gas milage cut in half!)
02-27-2011, 10:50 AM
#41
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it's been cold but not that bad, i'm in washington. I noticed my gas mileage had been seeming like i wasn't getting but 10mpg or so, so last night i got a full tank to check here and see for sure. My change oil light just came on and i don't think it's time for a change yet but i should check when i did last and the oil level. anyways, this morning i turn the key and usually there is a gush of power like any other cold start, but this time it barely got going and sounded really weak, i gave it a little gas (only a small throttle blip) an it went to 1200 like normal but then falls very low to around 500 and sounded like it was going to die. Then it gets it's self back up to a somewhat normal running rpm around a thousand. I did this a couple times, same thing. I had to go though so i had to get a ride and check things later. Anyone know what this could be? Plugs? Maf? Fuel line? I haven't seen any leaks i did check that..
02-27-2011, 01:47 PM
#42
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I think with yhe cold start I just had something gummed up.its been doing fine starting up now and yhe clicking I belive is the gasket missing from yhe secondary air. My only problem is yhe bad gas milage now.. Still havent gone through all that injector cleaner yet but.it doesnt seem to be helping much
02-28-2011, 02:34 PM
#43
I think with yhe cold start I just had something gummed up.its been doing fine starting up now and yhe clicking I belive is the gasket missing from yhe secondary air. My only problem is yhe bad gas milage now.. Still havent gone through all that injector cleaner yet but.it doesnt seem to be helping much
But hey...clean it anyway I guess.....lol
I think its time for a scan with a real OBDII scanner so you can see whats going with things while the engine is running.
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02-28-2011, 06:54 PM
#45
Not that I've ever seen, I think they cost like $4,000 or something like that.
The dealerships have them and almost all mechanic shops. Sometimes they charge like $15.00 to do it, but you have to have someone that really knows how to read everything. Too bad you have no speed shops around you, they would probably do it for free.
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The dealerships have them and almost all mechanic shops. Sometimes they charge like $15.00 to do it, but you have to have someone that really knows how to read everything. Too bad you have no speed shops around you, they would probably do it for free.
.
03-02-2011, 02:46 PM
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So just go to a chevy dealer or something? I was starting to think it was just due to my short commutes before the engine is able to warm up but 30 to 13 mpg? I kinda doubt it..
03-03-2011, 12:45 PM
#48
03-07-2011, 10:37 PM
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Havent found a place yet that can do it.. I dont mind working on the engine though because it gives me an excuse to give my car some tlc and make sure its up and running. Still the same problem (half gas mileage) here are the updates:
Tank (with injector cleaner) almost empty at around 150 on the dummy gauge.
Checked resistance on spark plug wires and they are doing fine @ 351 ohms which i believe is standard.
Clicking sound on start up is the egr gasket i need to replace
When i have the hood open and open the throttle quick there is a pretty violent whoosh (sucking) of air...normal? I always thought this was the lid but not sure anymore.
Took off maf and lid to clean and saw that the throttle blade has some gunk (not too much) but a little build up on in. Looks like oil and dirt...normal?
I open the throttle blade and look inside the intake manifold and it looks pretty wet inside...normal?
I noticed my coolent was really low
I just remembered this problem happend half way in winter about the same time i took my ac belt off because it started squeeking really bad, havent been running it sense..maybe i uncovered a vaccum leak?
Im going to try and clean the intake parts up, get that egr gasket ordered.. Any thoughts? Thanks for the help guys, ive read alot of threads on here about bad mpg's im hoping if i can pinpoint this it might help someone else out later on too alot of the threads ive found never post the final conclusion
Heres the pics: 1 and 2 are inside of intake, 3 is the tb
Tank (with injector cleaner) almost empty at around 150 on the dummy gauge.
Checked resistance on spark plug wires and they are doing fine @ 351 ohms which i believe is standard.
Clicking sound on start up is the egr gasket i need to replace
When i have the hood open and open the throttle quick there is a pretty violent whoosh (sucking) of air...normal? I always thought this was the lid but not sure anymore.
Took off maf and lid to clean and saw that the throttle blade has some gunk (not too much) but a little build up on in. Looks like oil and dirt...normal?
I open the throttle blade and look inside the intake manifold and it looks pretty wet inside...normal?
I noticed my coolent was really low
I just remembered this problem happend half way in winter about the same time i took my ac belt off because it started squeeking really bad, havent been running it sense..maybe i uncovered a vaccum leak?
Im going to try and clean the intake parts up, get that egr gasket ordered.. Any thoughts? Thanks for the help guys, ive read alot of threads on here about bad mpg's im hoping if i can pinpoint this it might help someone else out later on too alot of the threads ive found never post the final conclusion
Heres the pics: 1 and 2 are inside of intake, 3 is the tb
Last edited by The Mighty Texan; 03-08-2011 at 01:23 PM.
03-08-2011, 11:55 AM
#53
03-08-2011, 12:14 PM
#55
Do you always get gas at the same station?
If you do try a different gas station, maybe some bad gas.
FYI, Seafoam also works good if you add a can of it to the gas; better than regular FI cleaner in a bottle.
If you do try a different gas station, maybe some bad gas.
FYI, Seafoam also works good if you add a can of it to the gas; better than regular FI cleaner in a bottle.
Last edited by 99Bluz28; 03-08-2011 at 12:32 PM.
03-08-2011, 01:19 PM
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No just the one connecting the egr to the exhaust manifold on the passengers side. Yeah i wanted to check that so i got this last tank of gas at a different station and no difference.
Someone on here said that when checking the wires you want to bend them and check them too because they can show up fine normal but not work when flexed. However all of them looked good and tested out great when i did it so i dont think there the problem but i may take them off and try it again.
Im going to throw up the pics i took of the TB and inside of Intake manifold
Edit: See post above for pics
Someone on here said that when checking the wires you want to bend them and check them too because they can show up fine normal but not work when flexed. However all of them looked good and tested out great when i did it so i dont think there the problem but i may take them off and try it again.
Im going to throw up the pics i took of the TB and inside of Intake manifold
Edit: See post above for pics
Last edited by The Mighty Texan; 03-08-2011 at 01:24 PM.
03-08-2011, 02:43 PM
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I would think not having the egr gasket is causing a vac leak, it would be best to get that ordered soon, perhaps fresh air is getting int othe exhaust and messing up the o2s.