99 1500 van 5.9L loud noise coming from carb, gets up to about 30mph then decelerates
#1
No prob starting, idles fine... there's a point on the gas pedal where I'll feel it start to lose power, then the 'howling' sound eminating from the carb barrels...changed the fuel pump about 2 months ago...could it be related? Any help greatly appreciated!
I've been told that it could be catalytic converter?
Ok... it's funny because I just looked up 'signs of converter failure' and that's what they suggested, too. Much appreciated!
Disconnected the front 02 sensor....still getting the groan when I got that spot... that's only in D, stationary. I'm going for a spin around the block to see what it does under a load.
I've been told that it could be catalytic converter?
Ok... it's funny because I just looked up 'signs of converter failure' and that's what they suggested, too. Much appreciated!
Disconnected the front 02 sensor....still getting the groan when I got that spot... that's only in D, stationary. I'm going for a spin around the block to see what it does under a load.
Last edited by jkeaton; 11-14-2017 at 03:27 PM.
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Didn't have a check engine light until I disconnected the sensor... I changed the plugs when I did the fuel pump... about 2 months ago. It was running strong...the new pump really made a difference...it sounds like the carb is sucking for air...idles and starts no problem... I'm going to try to record the noise and post it if possible.. thanks again.
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