@62LostInMn There is a desmog guide specific to FJ62s that was posted here 3F-E Desmog. It's what I followed and it brakes up the process into a couple of segments, if you don't want to do it all at once.
Lets talk 3fe Desmog.
- Thread starter ward93
- Start date
-
- Tags
- 3fe desmog fj62 performance
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
- Joined
- Jul 22, 2012
- Threads
- 581
- Messages
- 16,296
- Location
- Winter Park, Florida
- Website
- www.cruisermatts.com
OK - you got me Captain Obvious...
I suppose the only "maybe" is if the EGR is stuck partially open... We'll give it a try and see what happens.
Go back through the 60 section and you'll see almost every post related to 3FE desmog will state there's minimal to no effect on the way the motor runs. It is highly unlikely you will be able to tell a difference.
Yep, I didn't notice a substantial difference in base line engine performance after desmogging. I decided to desmog after the VSV leading to the air rail totally disintegrated on me.
Desmogging is a good opportunity to go through the EF chapter of the FSM and to check for intake and vacuum leaks. You're more likely to notice an improvement just by cleaning your throttle body and replacing leaky hoses.
Desmogging is a good opportunity to go through the EF chapter of the FSM and to check for intake and vacuum leaks. You're more likely to notice an improvement just by cleaning your throttle body and replacing leaky hoses.
My 3fe had a rough idle. When I blocked the EGR it went away via the BB's in the vacuum line. My guess is there were additional vacuum leaks.
Also my MPG increased and it ran better. But if your 3fe is well running and without issues my guess is it won't improve. But I do believe taking out the EGR will increase MPG. Putting only fresh air into the combustion cycle is better than previously burned poison. My belief.
Also my MPG increased and it ran better. But if your 3fe is well running and without issues my guess is it won't improve. But I do believe taking out the EGR will increase MPG. Putting only fresh air into the combustion cycle is better than previously burned poison. My belief.
Also my MPG increased and it ran better. But if your 3fe is well running and without issues my guess is it won't improve. But I do believe taking out the EGR will increase MPG. Putting only fresh air into the combustion cycle is better than previously burned poison. My belief.
You may be right, but the point of EGR is to slow the combustion process (by introducing a less combustible gas) to prevent spark knock and lower combustion temps to prevent NOX formation.
Regarding desmogging, with a totally stock engine, at least you can troubleshoot using standard procedures, without wondering if your mods are affecting engine performance. It's a tractor motor that will never win any races, any way you slice it.
You may be right, but the point of EGR is to slow the combustion process (by introducing a less combustible gas) to prevent spark knock and lower combustion temps to prevent NOX formation.
Regarding desmogging, with a totally stock engine, at least you can troubleshoot using standard procedures, without wondering if your mods are affecting engine performance. It's a tractor motor that will never win any races, any way you slice it.
Will the desmog process be similar enough on a 1fzfe? My problem with the smog system is not so much what it does to the engine but that all the hoses and pumps etc are always in my way and make my engine look dirty for lack of a better term. Better mileage and a better running engine sounds great though
- Thread starter
- #27
As I understand it. Whether or not there is better performance. If all components are original you may see a slight increase in mpg or performance due to old broken components causing a performance drain. How ever for me tha major reason is the engine is a tractor engine and it doesn't matter what u do it's gonna be bad for the trees and if u own one u probably don't care. It's a pet of automotive history and if you want real performance and better trees swap the engine for a new v8. And 2 I already have some fuel and idol problems so it will be elimating dozens of fail points and reliability is my main concern. If I get better performance than great but my 3fe already drives better and faster than most people describe. I can get 60mph in about 8 secconds and I don't really wanna ask why. Though I've never had better then 10 mpg in traffic or highway it's a dead 10 mpg which with my fuel issues has dropped to 8. which I think is some of my old ecu sensors which I'm in the middle of replacing
- Thread starter
- #28
And I want the room for a battery and air pump
A low, sumbling idle is what's driving my interest in the desmog, or at least testing it to see if it makes a difference. Otherwise it runs pretty good and my mileage runs 13-15 mpg.
- Thread starter
- #30
mine idoled at 2000 rpm and would stall once it got up to operating temp. plus once it was hot it wouldn't start at all. I'm pretty sure I've narrowed it down to multiple failing sensors as now that l have toyed with a couple it won't run longer than 10 seconds and dies no matter what the temp but starts beautifully, lol can't have it all I guess. I just want to rule out vacuum leaks and id rather desmog than replace all those s***ty sensors and hoses if I already have to go to the trouble as all the hoses are cracking now. the Memphis heat doesn't help old rubber.
8 seconds to 60 mph, eh? Musta been one helluva hill. Motorweek tested a new one in 1989 at 14.2 seconds.
Yeah - My 1990 five oh Mustang was always advertised at 6.2 seconds 0-60. Nearly double the weight and 2/3rds the power.......
Most tractor motors are pretty simple though, and lack much in the way of emissions controls...
- Thread starter
- #34
Ok maybe I'm wrong it's a gestamate and probably a over estimation maybe Is 13 I just know it's faster than others I've driven and imma time it as soon as I have it running again hahaha. You guys are the worst! Hahaha I love it here
Removing the air pump silencer will open a big pile of room in the engine compartment (behind the driver's side headlight), and won't hurt a thing. That device is one of the dumber space-sucking items under the hood. I cannot tell that the air pump is any louder without this fine device.
Is that the little cylindrical canister behind the headlight?
Yes. just like he said, behind the driver's side headlights.
LAMBCRUSHER
SILVER Star
a 10k ohm resistor will give the ecu what it wants to keep the egr gas code from being thrown. it just needs to be wired in parallel to the sensor at any point in those two wires, which means it can happen under the harness wrap and not key a smog tech to the situation...
LAMBCRUSHER
SILVER Star
LAMBCRUSHER
SILVER Star
