Hello everyone,
I'd first like to say thanks to everyone that welcomed me to this site last week. Now, I am seeking help for an issue I've been having. I have a '97 K1500 5.7 with 150K miles that seems to stumble or engine shudder at about 50 mph and then again at 60 mph when accelerating. Whatever it is that's happening is slight and is undetectable when on a bumpy road. A little over a year ago, I changed out the distributor because of an engine code I was getting...had to do with crank sensor/cam sensor correlation. I checked the crank sensor and it was fine, but the cam sensor in the distributor was borderline under spec, so I decided to change out the sensor.
Well, it didn't work and after clearing the codes, that same code came back!
So I read up a little and found that if the distributor gear is worn, there can be a discrepancy and cause that issue. I then replaced the distributor with a new AC delco unit...including cap and rotor. I cleared the codes and started her up and no check engine light. I then took it to a garage to have the timing checked and adjusted.
Sometime later, I noticed the above mentioned condition. There isn't any code associated with the stumble. I have also noticed that if driving at around 30 mph and then floor the pedal, all I get is the tranny downshifting and motor roaring but not the power it should have and it accelerates moderately. However, if I am at a dead stop and then floor the pedal, she squeals the tires and pulls hard.
Not sure what to do.....any suggestions?
I'd first like to say thanks to everyone that welcomed me to this site last week. Now, I am seeking help for an issue I've been having. I have a '97 K1500 5.7 with 150K miles that seems to stumble or engine shudder at about 50 mph and then again at 60 mph when accelerating. Whatever it is that's happening is slight and is undetectable when on a bumpy road. A little over a year ago, I changed out the distributor because of an engine code I was getting...had to do with crank sensor/cam sensor correlation. I checked the crank sensor and it was fine, but the cam sensor in the distributor was borderline under spec, so I decided to change out the sensor.
Well, it didn't work and after clearing the codes, that same code came back!
So I read up a little and found that if the distributor gear is worn, there can be a discrepancy and cause that issue. I then replaced the distributor with a new AC delco unit...including cap and rotor. I cleared the codes and started her up and no check engine light. I then took it to a garage to have the timing checked and adjusted. Sometime later, I noticed the above mentioned condition. There isn't any code associated with the stumble. I have also noticed that if driving at around 30 mph and then floor the pedal, all I get is the tranny downshifting and motor roaring but not the power it should have and it accelerates moderately. However, if I am at a dead stop and then floor the pedal, she squeals the tires and pulls hard.
Not sure what to do.....any suggestions?
