Running on 3 Cylinders - and loud pop?
#1
Running on 3 Cylinders - and loud pop?
Hi there,
My 99 has been giving me a lot of headache lately. It is driving rough and noisy, has little power and cuts out a lot.
Just changed the spark plugs...
Still having trouble. Has no power on hills - almost stalls out. Pressing the accelerator receives no response, until it suddenly gets power, which produces a loud "pop" or bang noise on the passenger side almost right under foot.
Mechanic said only three cylinders are functioning well, and the sensors need cleaned. Does that sound right? Any other ideas?
My 99 has been giving me a lot of headache lately. It is driving rough and noisy, has little power and cuts out a lot.
Just changed the spark plugs...
Still having trouble. Has no power on hills - almost stalls out. Pressing the accelerator receives no response, until it suddenly gets power, which produces a loud "pop" or bang noise on the passenger side almost right under foot.
Mechanic said only three cylinders are functioning well, and the sensors need cleaned. Does that sound right? Any other ideas?
#3
Like I mentioned, I just changed the spark plugs. The mechanic looked it over again yesterday and is still telling me that it has only three cylinders properly functioning. He said he needs to remove the engine and check the non-functioning cylinders. He thinks it may be a valve. Does that make sense?
#6
Thanks for the replies so far.
I watched them change the plugs, and they did it one at a time, so I don't think they got the wires mixed. And yes, it did it before the spark plug change.
How does one check the compression?
I went to another mechanic today. He at first diagnosed it as running on three cylinders, but then said it is the Mass Air Flow Sensor. He borrowed one temporarily from another vehicle, and it seemed to run okay. He told me that the sensor was causing other things to malfunction, including the cylinders... Does that make sense at all?
Sorry, I am not like some on here that seem to know so much :) Should I try cleaning the MAF? Should I clean the throttle body sensor too? Would that help at all? Or just replace the MAF? Thanks again!
I watched them change the plugs, and they did it one at a time, so I don't think they got the wires mixed. And yes, it did it before the spark plug change.
How does one check the compression?
I went to another mechanic today. He at first diagnosed it as running on three cylinders, but then said it is the Mass Air Flow Sensor. He borrowed one temporarily from another vehicle, and it seemed to run okay. He told me that the sensor was causing other things to malfunction, including the cylinders... Does that make sense at all?
Sorry, I am not like some on here that seem to know so much :) Should I try cleaning the MAF? Should I clean the throttle body sensor too? Would that help at all? Or just replace the MAF? Thanks again!
#10
Thread
Thread Starter
Forum
Replies
Last Post
monarchdad
General Technical & Electrical
3
02-24-2007 10:33 PM