Hello If thier is anyone that has a clue what is going on with my monte please let me know asap. as i cant get into a shop untill monday.

PROBLEM:

When driving and i exceeed over 2500RPM The car starts to Bog and Blow some Smoke out the exhaust.. and its like thiers a rev limiter at 3000rpm now and engine light has come on.
car has only 63,000kms

When i put the car in nutral or park i can easly rev it over 3000rpm.. Coolant levan,oil pressure is all good. car Runs Fin under 2500rmp.

I just fulled car with premium yesterday and this problem has started today. I was thinking mabby water in the fuel:S but then it would bog wile in nutral or park and reving?

Monday at work we have a scanner if no one can help me i hope this scanner will but i dont wanna wait till monday. if this is something seriouse.

thank you hope to get some feed back

thx, steven

 

Check your Cat. I had a plugged one and the car ran about how you say yours does.
It was weird when it went, the car was fine all day then pulling out of my work the car started running horribly.

 

Ok well Ran the scanner today and Poofff says Thiers a MISSFIRE. 2nd injector miss fire. Soo mechanic says Just plugs and wires. Soo i go out buy the plugs and wires change them all my self AND OOO BOY those Back ones arnt that fun to do. But all said and Done
start the Monte UP STILL A MISS!!

now What is my next step i love spending money that doesnt have to be spent.. LOL

My next guesse would be COIL pack? Is this possible? Some one may have spilled quick i bit of antie frezze on the packs. but that was also 2 days befor this all happend.

If thiers ANYONE that knows whats going on befor more money grows on my tree out back that would be great.

thx steven

 

did you gap the plug to the right spec. might be maf sensor going bad or dirty. get a can of stp tb and air intake cleaner. turn off car, disconnect air box tube from tb, spray one or two mist through tb screen the sensor is behind the screen. start up the car and let it run for a minute, hook back the tb to the air box. if you don't have can of stp disconnect the maf sensor plug (on top of the tb) while the car is idling. if the car cut out or stall then the maf sensor need to be replace. that's my guess anyway...hope someone chime in.

 

Problem Fixed it was the coil for injectors 2 and 5... now the mc is like a scared rabbit again.

 

hehehe. well glad you got it fixed...now any chance of sharing the money tree with us MCFers??

 

There is a recall on the cats from 02 to 05 Monte's. I found out when I had my transmission rebuilt and the shop blew my motor (I had to pay for a new/used one).

Take your car to any Chevy dealership and get a new cat at no cost to you

 

I don't think it's necessarily a recall, just an extended warranty (100,000 miles) on the cat. Unless there's a proven problem I don't think they'll swap it for free.

Also I think it's all 00-05 montes.

 

There was an extended warranty on the '01-'02s, 10 years or 120k I believe. My vin fell right in the middle of the listed affected ones, at the time I had 108k and they fixed it free. GM called it a "special policy". Maybe it's been extended to other years. Mine was throwing a P0420 code though.

 

I was gonna say......

If you spilled any liquid on the coils I would swap the coil packs and see if the misfire follows.
There's a chance that you just caused a short inside the coil pack or that one of the connectors got corroded from the water.


Glad you found it though.

-Riggs.