Bad EGR?
Thread Starter
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Senior User
Joined: Aug 2012
Posts: 172
Likes: 1
From: Wisconsin
Bad EGR?
2004 completely stock 6.0, 276000 miles, head gasket done at 170000. EGR replaced at time of head gaskets.
About once a week if I get stopped at a red light or stop sign and I get the green to go, I get a slight hesitation then the truck gets up and goes. Sometimes I get a slight puff of white smoke. Today I had to stop on a decent incline and wait for traffic before I could enter the roadway. I had just enough power to get on the road and I was billowing white smoke like crazy. I went like that for about 100' then the turbo spooled and off I went like nothing happened. Last I checked my coolant is good and no puking degas.
I'm guessing it's a sticky EGR?
Thought?
About once a week if I get stopped at a red light or stop sign and I get the green to go, I get a slight hesitation then the truck gets up and goes. Sometimes I get a slight puff of white smoke. Today I had to stop on a decent incline and wait for traffic before I could enter the roadway. I had just enough power to get on the road and I was billowing white smoke like crazy. I went like that for about 100' then the turbo spooled and off I went like nothing happened. Last I checked my coolant is good and no puking degas.
I'm guessing it's a sticky EGR?
Thought?
Postmaster
Joined: Aug 2015
Posts: 3,910
Likes: 18
From: NW IA
Check the MAP sensor hose and nipple, be sure it's clean.
EBP sensor might be suspect, be sure the tube is clean.
Any codes? How are you reading live data?
EGR is easy enough to pull and check for soot build up that might prevent proper oepration
EBP sensor might be suspect, be sure the tube is clean.
Any codes? How are you reading live data?
EGR is easy enough to pull and check for soot build up that might prevent proper oepration
Thread Starter
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Senior User
Joined: Aug 2012
Posts: 172
Likes: 1
From: Wisconsin
I will need to check those things! Thanks
I do have a scan gauge hooked up. No codes or check engine light. Be honest I've never seen the check engine light ever. I've had the truck since new and own all the miles.
Is there something in particular I should look for on the scan gauge?
I do have a scan gauge hooked up. No codes or check engine light. Be honest I've never seen the check engine light ever. I've had the truck since new and own all the miles.
Is there something in particular I should look for on the scan gauge?
Thread Starter
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Senior User
Joined: Aug 2012
Posts: 172
Likes: 1
From: Wisconsin
Yes turbo was cleaned when the head gaskets were repaired.
I will do the sniff test next time.
It acted just like this just before the head gaskets went last time. The dealer initially thought it was the egr until they could diagnose the head gasket.
I will do the sniff test next time.
It acted just like this just before the head gaskets went last time. The dealer initially thought it was the egr until they could diagnose the head gasket.
Lead Driver
Joined: May 2014
Posts: 6,545
Likes: 13
From: Virginia Beach VA
Program the DTC count into the Scan Gauge and see how many codes are stored. It doesn't do well with reading the codes but does good counting them. Then use something like Torque Pro or ForScan to read them
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Thread Starter
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Senior User
Joined: Aug 2012
Posts: 172
Likes: 1
From: Wisconsin
The EGR was really dirty. So I cleaned it and out it back. It still functioned properly. When I push the plunger out it always sprung back.
It was slightly moist under the EGR. More like a soot paste laying down in the bottom. Is this normal?
I checked the MAP sensor and it and the tube looked in good shape.
I didn't check the EBP yet. Looks like that will require a little more time.
It is a late build '04.
I hope it's just a dirty EGR! I would like to turn 300000 before I sell it.
It was slightly moist under the EGR. More like a soot paste laying down in the bottom. Is this normal?
I checked the MAP sensor and it and the tube looked in good shape.
I didn't check the EBP yet. Looks like that will require a little more time.
It is a late build '04.
I hope it's just a dirty EGR! I would like to turn 300000 before I sell it.
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Thread Starter
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Senior User
Joined: Aug 2012
Posts: 172
Likes: 1
From: Wisconsin
I'll take a closer watch at the temps tomorrow. I usually just glance and check the deltas once in a while.
So if the EGR cooler is shot, is it cheaper to just do the delete?
I did try to sniff down into the EGR pocket when I had it out and there was a faint coolant odor.
So if the EGR cooler is shot, is it cheaper to just do the delete?
I did try to sniff down into the EGR pocket when I had it out and there was a faint coolant odor.
Lead Driver
Joined: May 2014
Posts: 6,545
Likes: 13
From: Virginia Beach VA
Better to try the tailpipe sniff.... loosing any coolant?
Depends, state inspections? After you drive it, park nose down, any coolant may puddle in the front, under the EGR valve.
Normally, EBP sensor control how fast a peddle response is, MAP sensor responds with how much boost. Clean both and the tubes that feed them. Use string trimmer line. Check the MAP hose, make sure you clean the nipple as well.
Depends, state inspections? After you drive it, park nose down, any coolant may puddle in the front, under the EGR valve.
Normally, EBP sensor control how fast a peddle response is, MAP sensor responds with how much boost. Clean both and the tubes that feed them. Use string trimmer line. Check the MAP hose, make sure you clean the nipple as well.