2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

EGR delete

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Old May 2, 2020
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From: Kilgore
Post EGR delete

I was considering deleting the EGR on my 3.0, would I have to tune my truck for this? if so where could I get a tuner to do this.
 
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Old May 3, 2020
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Why delete it?
 
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Old May 3, 2020
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First things first
Working EGR system and Catalytic converters do NOT effect the power of any engine, just FYI

That being said if you need to delete EGR system then yes you will need to change spark timing or your 3.0l Vulcan engine will ping/knock
Depending on the year of the 3.0l Ranger/B3000 it may have a Knock sensor which will prevent this, but will also cause a noticeable drop in power


EGR(exhaust gas re-circulation) was added years and years ago to prevent the spike in NOX gases in the exhaust, its a toxic gas
NOX emissions spike when cylinder temps get VERY HOT, like they do during acceleration
This is caused by the sudden RICH air/fuel mix used
By adding "hot" exhaust gases it COOLS the cylinders during this time which lowers the NOX spike, yes hot gases cool the cylinders, lol, go figure
So EGR system is not used when engine is cold, and it only used when engine is under a LOAD, that's when cylinders heat up

But there is also a bonus in this "cooling effect"
An engine will ping/knock from from pre-ignition(self ignition) running regular 87 octane gasoline if cylinders get TOO HOT, octane is a HEAT rating, i.e. 91 octane won't self ignite at same temp as 87, and 93 octane won't self ignite at same temp as 91, higher octane number means less sensitive to heat and self ignition

Spark timing in any engine must be set for the type of fuel you will run, most US vehicles are set up for 87 octane, regular gas
Without an EGR system spark must happen earlier to avoid pre-ignition, but this lowers power
With an EGR system a more aggressive spark timing can be used for better power
Some engines use a Knock sensor, these can run a more aggressive spark but it will go back to less aggressive if Knocks are detected, you won't hear the ping/knock, sensor can detect it before its audible

This is what pre-ignition does to inside of the head: https://bmwmotorcycletech.info/ValveLetGo-Head.jpg

And here is what it does to pistons: https://d3hbcrfcqdtpdz.cloudfront.ne...cf4f92e5fb.jpg

Worse case scenario, lol, but it happens




 

Last edited by RonD; May 3, 2020 at 01:02 PM.
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Old May 3, 2020
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From: Kilgore
Originally Posted by RonD
First things first
Working EGR system and Catalytic converters do NOT effect the power of any engine, just FYI

That being said if you need to delete EGR system then yes you will need to change spark timing or your 3.0l Vulcan engine will ping/knock
Depending on the year of the 3.0l Ranger/B3000 it may have a Knock sensor which will prevent this, but will also cause a noticeable drop in power


EGR(exhaust gas re-circulation) was added years and years ago to prevent the spike in NOX gases in the exhaust, its a toxic gas
NOX emissions spike when cylinder temps get VERY HOT, like they do during acceleration
This is caused by the sudden RICH air/fuel mix used
By adding "hot" exhaust gases it COOLS the cylinders during this time which lowers the NOX spike, yes hot gases cool the cylinders, lol, go figure
So EGR system is not used when engine is cold, and it only used when engine is under a LOAD, that's when cylinders heat up

But there is also a bonus in this "cooling effect"
An engine will ping/knock from from pre-ignition(self ignition) running regular 87 octane gasoline if cylinders get TOO HOT, octane is a HEAT rating, i.e. 91 octane won't self ignite at same temp as 87, and 93 octane won't self ignite at same temp as 91, higher octane number means less sensitive to heat and self ignition

Spark timing in any engine must be set for the type of fuel you will run, most US vehicles are set up for 87 octane, regular gas
Without an EGR system spark must happen earlier to avoid pre-ignition, but this lowers power
With an EGR system a more aggressive spark timing can be used for better power
Some engines use a Knock sensor, these can run a more aggressive spark but it will go back to less aggressive if Knocks are detected, you won't hear the ping/knock, sensor can detect it before its audible

This is what pre-ignition does to inside of the head: https://bmwmotorcycletech.info/ValveLetGo-Head.jpg

And here is what it does to pistons: https://d3hbcrfcqdtpdz.cloudfront.ne...cf4f92e5fb.jpg

Worse case scenario, lol, but it happens


so you’re saying if I delete the egr I could actually hurt my engine? how can I tell if my egr is bad? I think I may have a bad egr? Also do you happen to know anything about the gauges on the dash? I did some research and I heard that they’re practically switches, so there’s no inbetween, it’s pretty much one side or the Other, I’m only saying this because every once in a blue moon after a while of driving at idle my oil pressure gauge kinda twitches.
 
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Old May 4, 2020
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First, check all your vacuum lines for cracks and proper routing. It also helps for forum members to know the year of the engine, how many miles and what kind of maintenance has been done while owning it.
 
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Old May 4, 2020
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What YEAR Ranger?

Its important

No, on the gauges, only gauge that "may" use a switch sender is oil pressure, so its either ON(oil pressure OK) or OFF(engine off or no oil pressure), so not a big deal

EGR system is for emissions, so would be a monitored system, computer would set a trouble code and turn on CEL(check engine light) if it detected a problem with EGR system
 
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Old May 4, 2020
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From: Kilgore
It’s a 2000 ford ranger xlt
 
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Old May 4, 2020
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2000 Ranger uses the EEC-V Computer, the one Ford still uses today, so it will set a code if any of the 3 parts of the EGR system showed a problem
CEL would come on instantly because it is an Emissions system

You can order a Bluetooth OBD2 reader for $15-$30 and use it with a FREE APP on your smart phone to read codes and also WATCH Live data from sensors while driving
These work on ANY vehicle sold in the US or Canada since 1996, its the Law, so not a Ford specific thing, a good tool to have if you plan on driving any cars for a few years
 
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Old May 4, 2020
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From: Kilgore
Originally Posted by RonD
2000 Ranger uses the EEC-V Computer, the one Ford still uses today, so it will set a code if any of the 3 parts of the EGR system showed a problem
CEL would come on instantly because it is an Emissions system

You can order a Bluetooth OBD2 reader for $15-$30 and use it with a FREE APP on your smart phone to read codes and also WATCH Live data from sensors while driving
These work on ANY vehicle sold in the US or Canada since 1996, its the Law, so not a Ford specific thing, a good tool to have if you plan on driving any cars for a few years
my truck has no engine light on, but my OBD port is not working due to the common issue with the drivers side cigarette lighter being faulty which causes the fuse to blow, I've just been too lazy to mess with it. but I think with 228,000 miles id be best off just changing my EGR and checking all the hosing to see the condition, any tips on how to tell if there is pre ignition? I know I have a little carbon build up due to miles, I plan on running sea-foam through my engine, by spraying it in the throttle body, right before I change the oil again.I have heard bad things about sea-foam on high mileage engines, but I also head if you spray it straight into the throttle body you should be good, also not to use too much either
 
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Old May 5, 2020
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Is the truck running poorly? You need to address the inoperable OBDII port regardless. I'm not even sure if the check engine light would illuminate if it isn't working. RonD could shed light on that.
 
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Old May 5, 2020
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CEL has its own fuse, in 2000 its fuse #11, 7.5amp(cab fuse box), computer grounds this bulb to turn it on, it should come on with Key ON, if not then fuse 11 is blown or bulb is burned out

Yes, the cigar lighter and Data Link connector share a 25amp fuse, in 2000 its fuse 17(cab fuse box)

You can, of course, clean the EGR Valve and its tube, the tube is what usually gets clogged up with carbon

Putting any liquids into a running engine has a hazard warning, but using a spray bottle reduces the hazard level

No, Seafoam or just water sprayed into the engine won't cause long term issues, same people say "flushing engine or trans" causes issues, what they forget to mention is that MOST people don't do these things UNLESS they are having a problem, so after a "flush" any problem is "because of the flush", not because of 5 - 10years of 0 maintenance, lmao on that one
If cleaning a part or parts causes a problem then that part was bad already, cleaning didn't cause the issue
 
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Old May 5, 2020
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From: Kilgore
yeah my check engine light works, it comes on with all the other lights when I turn the key, I have cleaned the EGR already, I think my engine is squared away, I appreciate the help from everyone, I just have a small idle issue, it idles rough, I think its my mass flow air sensor, the black cover on the wiring has a crack, I bet water got in there and messed it up, I will fix that first and go from there
 
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