I have a 2002 Escalade that will stall out occasionally at lower speeds. It is also idling a bit rough. I just changed the plugs and plug wires, but am stumped on what to do next. If you have any ideas, I would appreciate them big time, thanks.
2002 Esdcalde stalling occasionally and rough idle
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I had that issue last summer until I cleaned my throttle body...
Its 99.9% the throttle body,for some reason i am only seeing this problem in 02s. So clean the heck out of it but avoid directly spraying cleaner directly into it, it might give you a minor start up problem. when you clean it pay attention to the rim of the throttle body. and also the walls. if you want to remove it to really get in there, you can, just know you will have to buy a new gasket and torque the bolts back on.cleaning its a very simple procedure with big results. And be careful if you gonna clean your MAF, its very delicate and damage will throw your air/ fuel ratio off. Still, i dont think there should be a reason to clean the MAF sensor unless its visibly dirty maybe from having a Cold Air Intake.
A clogged fuel filter will give a hesitation on full throttle.Still not a bad idea to change it out.Cheap part.
My money would be on the throttle body.The blade inside gets gunk built up on it and enough air can't get by.Especially noticeable with a rough idle.
LS1's aere famous for this with the design of the PCV system...or lack of design I should say.
My money would be on the throttle body.The blade inside gets gunk built up on it and enough air can't get by.Especially noticeable with a rough idle.
LS1's aere famous for this with the design of the PCV system...or lack of design I should say.
hi everyone. I have a 2002 cadillac escalade. It rough idles. I took it to mechanic shop, they cleaned out the throttle body and did a full diagnostic on it. Spark plugs and wires are good. No engine misfire. No check engine light on. The car runs and drives good except for this annoying issue. I took it to a different and they said i have to clean out the MAF, it's dirty and needs cleaning. I haven't done it yet but i was just wondering if that would fix the rough idle. Also please i would greatly appreciate any suggestions on other steps to take to resolve this issue. thanks
Clean the maf sensor and the throttle body if not it may be plugsboyvee84 said:
Okay Everyone,
I have had a problem with my 1999 Cadillac Escalade 5.7L V8 Chevy 350. I bought it about a week ago. When the guy started it, it was running very rough. He told me that when he was driving back from the mountains that he heard a loud "POP" and pulled over and looked under the hood and found that a spark plug wire had popped off. He then hooked it back up and kept driving. When he started driving again it was running rough just like when I bought it. I drove it about 45 miles home and parked it in my garage. I have been a mechanic for about 17 years and had no idea what it was, but had a few ideas... I replaced the plugs, wires, cap, rotor, IAC, CTS, TPS, checked the spider injectors and thoroughly cleaned out the throttle body and MAF. Also replaced the MAP sensor. It seemed like it was running rich and idling very poorly. Almost as if it was mis firing. I would start it up and it would almost die, sometime it would, and then it would periodically surge between 500-700 rpms. Then it would run ok for a few minutes and then go back to running like crap again. I decided to take off the upper intake and clean it out as well as inspect the spider injectors for leaks. There was about 2mm of carbon and oil build up inside the intake. I detected no injector leaks. I then decided to remove the lower intake manifold in order to clean it as well. When I removed the lower intake manifold, I discovered something very odd...... I would have never guessed that after lifting out the lower intake I would find a piece of the roller rocker and the inside spring just sitting underneath the intake, also I discovered a push rod bent and "off its rocker" hahaha, I then realized that this had to be the culprit for why my Escalade has been running very touch since before I bought it. If anyone is having the same problem that persists after replacing everything I did before I found the problem, then hopefully this will help you! Have fun with it cause I'm 4 days into it and won't be done until tomorrow.
I have had a problem with my 1999 Cadillac Escalade 5.7L V8 Chevy 350. I bought it about a week ago. When the guy started it, it was running very rough. He told me that when he was driving back from the mountains that he heard a loud "POP" and pulled over and looked under the hood and found that a spark plug wire had popped off. He then hooked it back up and kept driving. When he started driving again it was running rough just like when I bought it. I drove it about 45 miles home and parked it in my garage. I have been a mechanic for about 17 years and had no idea what it was, but had a few ideas... I replaced the plugs, wires, cap, rotor, IAC, CTS, TPS, checked the spider injectors and thoroughly cleaned out the throttle body and MAF. Also replaced the MAP sensor. It seemed like it was running rich and idling very poorly. Almost as if it was mis firing. I would start it up and it would almost die, sometime it would, and then it would periodically surge between 500-700 rpms. Then it would run ok for a few minutes and then go back to running like crap again. I decided to take off the upper intake and clean it out as well as inspect the spider injectors for leaks. There was about 2mm of carbon and oil build up inside the intake. I detected no injector leaks. I then decided to remove the lower intake manifold in order to clean it as well. When I removed the lower intake manifold, I discovered something very odd...... I would have never guessed that after lifting out the lower intake I would find a piece of the roller rocker and the inside spring just sitting underneath the intake, also I discovered a push rod bent and "off its rocker" hahaha, I then realized that this had to be the culprit for why my Escalade has been running very touch since before I bought it. If anyone is having the same problem that persists after replacing everything I did before I found the problem, then hopefully this will help you! Have fun with it cause I'm 4 days into it and won't be done until tomorrow.
Please start a new threadAkjcp said:
Never mindwesyder said:If i just typed all that, oh we are soooo using this thread
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