So the other day I put gas in my car, leaving the gas station I stopped at a light and my car was idleing at about 1300. I thought weird, but drove it home anyway less than a mile. The next morning I am leaving for school, same high idle, and when I try to drive it shutters pretty bad, feels/sounds like a miss so I stop, make sure all my plug wires are on good. (did plugs and wires about 1000 miles ago) They are fine, I start driving and the car runs perfect. On the freeway on my way to school cruising at 75 and the car all of a sudden drops rpm almost stalling so i move over a lane and it drives fine again. But the more gas I give it the more it cuts out. Get to school, coming home few hours later, car idles fine, no miss, and than just dies. I pull over try to start it, turns over but wont run/idle. I finally call a tow truck, get it home, run some codes. And the car starts fine. (so i feel kinda dumb lol) runs and drives fine.
here is the codes:
10-PCM - P0101H mass air flow system performance B
28-TCS C1226H, C1255H, C1276H, C1278H, C1281H
40-BCM no codes
60-IPC no codes
80-Radio no codes
99 HVAC no codes
A0-LDCM B2282H, B2284H, B2262H, B2264H, U1064H
A1 - RDCM B2283H, B2285H, B2265H, U1064H
A6- SCM B0851H
B0-RFA no codes

Something to do with MAF but what?
maybe bad gas?
fuel pump failing?
any ideas?
sorry about the super long post but I wanted to get the whole scenario across.
28-TCS c

 

man there must be something in the air! good luck with your situation, please post here if you figure it out, because I'm not the only one in a similar boat right now. like you after my car's odd behavior for several minutes while trying to head back to work it finally corrected itself and is running just fine right now.

 

Do you have a K&N filter?

Try cleaning the MAF with electrical parts cleaner...Easy/cheap to do and won't hurt to try...

 

Sounds like the only code that would cause ALL of your problems is P0101 ----It is poor MAF sensor performance--If it just started happening then I would look at the folowing things---
1.If you just changed your wires or plugs--look for a dis-connected pigtail on your MAP sensor--located at the rear or the intake manifold or any vacum hoses on the drivers side on top of the manifold--Also the vacuum hose at the rear of the intake--next to the MAP sensor
2. A clamp that has come loose on your intake bellows or airbridge-- intake hoses all the way to your throttle body
3. An over oiled air filter will foul your MAF-spray the MAF with brake-clean---check to see if filter is excessively dirty or torn
4. check you throttle body for carbon build-up and clean
5. check your IAC passage for carbon and clean
6. make sure your TPS is pluged in ( throttle position sensor)
7. A plugged or dented closed exhaust pipe will cause this code too--

Good luck !! and let us know-

 

sounds to me ill try that, i do have a k&n drop in could that be it?

 

An air filter wont cause any of the symptoms listed.

 

An air filter won't cause it, but an overly oily air filter will. I have never seen it on a Corvette but I have seen a number of other vehicles with similar symptoms, although not this bad, that were caused by oil fouling on the maf from excess oil coming off of the air filter. It's definitely worth checking out.


-Justin

 

I got the filter new, and it came pre-oiled I have not yet cleaned it <1000 miles. I will try cleaning the MAF sensor and go from there. I cannot really do much as for driving because we just got about 3 inches of snow. Thanks for the input everyone. Ill let everyone know how it goes.

 

Even if it is over oiled and had fouled the MAF sensor wires?

Charlie

 

I have a vararam on my car, the newer version which uses the same type of cotton oiled filter. maybe I'll check on that myself.

 

Pull the MAF out and clean with with either electrical parts cleaner or possibly brake cleaner and put it back in. If the problem continues, look at the PCV valve and connection to the intake. Do you hear any vacuum leaks?

 

I cleaned my throttle body, and MAF sensor with MAF sensor cleaner. Filter looks clean, TB had some oil gunk, not too bad though. The car now idles better, but still hesitates when you get on the gas. Fuel problems? change fuel filter?

 

anyone??

 

Changing the fuel filter isn't a bad idea, especially if you have high mileage. I would dump in a can of BG44K fuel cleaner, run it for a bit and then change the filter. Might be a bit of a long shot, but won't hurt to try. You can find BG44K at dealerships. There is a dealer here in Grand Blanc that sells it...

 

I changed the fuel filter, put some redline cleaner in the tank. I pull out of my sub I get code p1514 I pull over, engine is spuddering, turn it off. Start back and it seems good. I reset all the codes, take it for another ride and seems fine, just spudders under about 1300 rpm than drives fine. any ideas?

 

[QUOTE=JeepJake;1564789366]I get code p1514 [QUOTE]

This is a throttle body code that I think means the ECM isn't seeing the expected air flow. I think it sets with higher or lower than expected. Look for a leak around the air cleaner-throttle body bridge. It is really easy to have the seal on the bottom improperly made. The bridge has a circumferential recessed slot in it that the throttle body edge sits in to provide the needed seal. If the bridge doesn't slip down over the throttle body, there will be a leak that can cause the symptoms you describe. I had similar issues and fixing this seal corrected them.

Charlie

 

Did you look at the PCV valve connection tube from the PCV to the intake yet? It can and will develop holes on the bottom of it where you may not see it. It happened to mine.

 

Did you happen to fill the tank COMPLETELY FULL??? I mean to the VERY TOP?

If so, that can cause the fuel system emissions Charcoal Canister to flood with fuel and when the system purges, that excess fuel will be sucked into the intake. It also throws a code. (cant for the life of me remember what it is )

Been there done that!

Try clearing the DTC and after all the repairs see what pops back up.

Bill

 

I am getting a new PCV today, and see how it goes. It seems now, it has a hard time starting when cold, sometimes it will sputter at low rpms, other times it just has a high idle, but I dont have any codes that would pertain to it.

 

What kind of spark plugs did you put in?