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2000 Cadillac Escalade Have No Idea-Fuel maybe?

Tiny
MELISSA_G
  • MEMBER
  • 2000 CADILLAC ESCALADE
  • 180,000 MILES
The car will start no problem, it will run but when it heats up just a little it will bog way down and it has a quite backfire, especially when pulling out of somewhere. I put a new rotor, cap, 2 sets of plugs (went from Bosch to AC Delco), fuel filter, fuses, totally cleaned the throttlebody, new battery, fuel treatment and topped off the fluids. Still runs horribly. Please help me.
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Sunday, November 3rd, 2013 AT 5:25 PM

11 Replies

Tiny
MELISSA_G
  • MEMBER
  • 12 POSTS
I forgot it does sound weird when running (driving it only. Just sitting there its fine) and I can't go above 30 mph.
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Sunday, November 3rd, 2013 AT 5:31 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
Can you describe the sound it makes? Also, have you checked the fuel pump pressure? Finally, has the check engine light come on?
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Sunday, November 3rd, 2013 AT 6:27 PM
Tiny
MELISSA_G
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  • 12 POSTS
The sound it makes is kinds of like a car with no muffler but not as loud. It always sounds that way due to the type of muffler or engine something (sounds tuff) but this is different. I check the fuel pump pressure and it is at 61 they said and that it should be at 80+. Also, today when I killed it to go into the store, it acted like it didn't want to start when I tried to start it. It eventually did start but was if(y). I'm replacing the fuel pump today so hopefully that works. Do you think it could be it?
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Monday, November 4th, 2013 AT 6:53 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
Since it sounds funny, are you sure the catalytic converter isn't plugged?
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Monday, November 4th, 2013 AT 8:29 AM
Tiny
MELISSA_G
  • MEMBER
  • 12 POSTS
Well I actually thought about that several times. But everyone I talk to says to try the fuel filter, plugs, pump. Everything but that. I was told I could just poke a hole in the catalytic converter and others are saying no to just have it cut off. I don't know what to do. If the fuel pump doesn't fix the problem then that (catalytic converter), 02 Sensor or EGR Valve is next in line. Which I try first?
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Monday, November 4th, 2013 AT 10:01 AM
Tiny
MELISSA_G
  • MEMBER
  • 12 POSTS
Okay well I changed the fuel pump and its the same way. I was told that since the check engine light is on, that if I unplug the battery for awhile then reconnect that it will tell the "brain" that its okay and the engine light will off, resulting in a fix maybe. Does that sound right?
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Monday, November 4th, 2013 AT 3:47 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
Wow. Someone is telling you to cut the converter off or punch a hole in it? Not very good ideas. As far as the check engine light, it may go out, but in most cases the computer needs reset using a scanner. Most parts stores will do it for free. However, I don't think that will fix the problem.
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Monday, November 4th, 2013 AT 7:45 PM
Tiny
MELISSA_G
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Do you have any ideas what will fix it? Another guy told me it could possibly be the timing sensor or something. Do you think that is a possibility? I just need it fixed asap.
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Tuesday, November 5th, 2013 AT 4:41 AM
Tiny
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  • MECHANIC
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Unbolt the catalytic converter and see if that takes care if the issue. Don't cut it or put a hole in it. As far as the timing issue, there is no "Timing Sensor". You have a crank and cam sensor. Usually the vehicle won't run when either goes bad. Try the converter first.
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Tuesday, November 5th, 2013 AT 12:36 PM
Tiny
MELISSA_G
  • MEMBER
  • 12 POSTS
Okay. Well I will try that. Also, another mechanic is coming to look at it today and says it could a box thing that sits by the engine. He knows what the box is called, but I can't remember the exact name.
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Tuesday, November 5th, 2013 AT 2:25 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
Let me know what you find.
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Tuesday, November 5th, 2013 AT 5:00 PM

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