1987 B250 Wagon 318ci - remove the catalytic and oxygen sensor
#1
08-12-2018, 05:50 AM
1987 B250 Wagon 318ci - remove the catalytic and oxygen sensor
Hi,
For a better creep of the exhaust gas, i would remove the catalytic muffler and change by a tube. The oxygen sensor no longer serves anything, isn't it ?
If i going to stop the EGR valve too what affects ?
I don't have the Van right now, but i know on 1987 It's a carbured 318ci engine. Logically don't do have any calculator i think .
So what effects on the engine if this 3 items are deleted ( catalytic exhaust, oxygen sensor and EGR valve ) ?
#2
08-12-2018, 09:53 AM
Cat: No real performance issues, but, if you have emissions testing, it won't pass without one. (not to mention it's mandated by federal law here in the US.... so, removing it is technically a felony. Not that I have EVER heard of anyone being prosecuted for it.....)
O2 sensor. You don't wanna remove that. It plays the biggest role in determining how much gas the engine gets. Removing it WILL compromise performance, and fuel economy.
EGR. Another emissions thing..... Hit or miss on whether removing it will cause any issues. (aside from maybe a check engine lite.)
O2 sensor. You don't wanna remove that. It plays the biggest role in determining how much gas the engine gets. Removing it WILL compromise performance, and fuel economy.
EGR. Another emissions thing..... Hit or miss on whether removing it will cause any issues. (aside from maybe a check engine lite.)
#3
08-12-2018, 10:32 AM
Cat: No real performance issues, but, if you have emissions testing, it won't pass without one. (not to mention it's mandated by federal law here in the US.... so, removing it is technically a felony. Not that I have EVER heard of anyone being prosecuted for it.....) O2 sensor. You don't wanna remove that. It plays the biggest role in determining how much gas the engine gets. Removing it WILL compromise performance, and fuel economy.
Not competely right wth you. The ceramic hive inside the catalytic do block a little bit the exhaust creeps to going out.
About the emission testing, we have too here but no problem here if you use E85, the release of carbon monoxide is really less than the regular gasoline. No, my main concern is to undestand and know what influence have the oxygen sensor on the keep good running engine ? The carburetor work alone , only on the setting you give i think, no ? On the 1987 carbured 318ci engine, you don't have any calculator or computer like for injected engine, isn't it ?
If somebody can explain me witch work offering the oxygen sensor on this carbured engine, it's welcome because something escapes me on this subject.
Ok for the EGR valve, no issue on the the good running engine, thank you
Not competely right wth you. The ceramic hive inside the catalytic do block a little bit the exhaust creeps to going out.
About the emission testing, we have too here but no problem here if you use E85, the release of carbon monoxide is really less than the regular gasoline. No, my main concern is to undestand and know what influence have the oxygen sensor on the keep good running engine ? The carburetor work alone , only on the setting you give i think, no ? On the 1987 carbured 318ci engine, you don't have any calculator or computer like for injected engine, isn't it ?
If somebody can explain me witch work offering the oxygen sensor on this carbured engine, it's welcome because something escapes me on this subject.
Ok for the EGR valve, no issue on the the good running engine, thank you
#4
08-12-2018, 05:26 PM
If there is an oxygen sensor, then there is indeed a computer in there. It's likely a 'feedback' carb, where the PCM controls the jets in the carb. (computer will also control EGR valve...) PCM uses info from the O2 sensor to determine what the current mixture is running like. Too much oxygen, it will add more gas, not enough, it will not allow as much. It has THE HIGHEST effect on fuel economy. (if 'economy' can be used when referring to a 6000 pound van.... 
)
A cat converter in good condition won't compromise performance to a noticeable extent. If it is failing, then, yeah, it can be a problem.
)A cat converter in good condition won't compromise performance to a noticeable extent. If it is failing, then, yeah, it can be a problem.
#6
08-12-2018, 11:35 PM
I’ve Just receive the right owner manual for 1987 Ram Vans & Wagon. In the section 4 , maintenance, about the Oxygen Sensor it’s said ; « (if so equipped) Replace the Oxygen Sensor, located in the exhaust manifold, at the mileage interval shown on the appropriate maintenance schedule. » It’s at 50K miles.
I’m surprised because it’s not on the exhaust line ?
i check on Rockauto and it is available but not precised if this O2 sensor going on the exhaust line or on the manifold ?
So i’ve Buying the Official 1987 Dodge service manual on EBay, can’t wait to receive
OBD2 . . . I read many threads here and it’s not the first time I see this. But what is this please ?
I’m surprised because it’s not on the exhaust line ?
i check on Rockauto and it is available but not precised if this O2 sensor going on the exhaust line or on the manifold ?
So i’ve Buying the Official 1987 Dodge service manual on EBay, can’t wait to receive
OBD2 . . . I read many threads here and it’s not the first time I see this. But what is this please ?
#7
08-12-2018, 11:35 PM
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