Re: Rough Idle on 1990 Jeep Wrangler
Thank you for your help in getting my jeep up and running again. It
was greatly appreciated. Mike Romain wrote: > One common failure is the charcoal canister. When it fails totally, the > idle will surge which will make the EGR go in and out or just not want > to work and a pile of oil gets puked into the air filter imitating a > blown engine... > > To test this, you follow the PCV line from the front of the valve cover > to the back of the carb. At the back you will find a t fitting or a > solenoid thing with another line coming off it. This other line goes > way down behind the fender to the top of the charcoal canister. At idle > pinch this line closed. If the idle changes, the canister purge valve > is dead. > > You can take this line off the canister and plug it at the carb > 'temporarily' to set the carb up right. You will need this canister > plugged back in to avoid a lot of gas fumes because the canister is the > vent for the gas tank and float bowls. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's > Canadian Off Road Trips Photos: Non members can still view! > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > (More Off Road album links at bottom of the view page) > > Jacob_T wrote: > > > > I've had my 1990 Jeep Wrangler for about 5 years. For a while now > > though it has had trouble keeping a steady idle. Labor Day weekend, I > > had to get a new engine for it, and I thought the mechanic could tune > > the carb so it finally idles correctly. He told me though that he > > doesn't understand the electric feedback carburetor systemt and to try > > someone else. So here is what it does. > > > > It won't idle at all now, and the idle screw is turned almost all the > > way in, When it did idle it keeps sputtering after i turn it off. It > > idles fine while choked when it is cold, but when the choke goes off > > and it warms up, it can't keep running. I was reading on others and > > they mentioned egr valve, but then again I don't know to much about the > > egr valve. When the jeep runs the egr pulsates in and out and doesn't > > just open and stay open or close and stay close, is this how it is > > supposed to work or is it supposed to open and close as necessary. > > Hopefully one of you Jeep lovers out there can help me out. > > > > Jacob |
Re: Rough Idle on 1990 Jeep Wrangler
Thank you for your help in getting my jeep up and running again. It
was greatly appreciated. Mike Romain wrote: > One common failure is the charcoal canister. When it fails totally, the > idle will surge which will make the EGR go in and out or just not want > to work and a pile of oil gets puked into the air filter imitating a > blown engine... > > To test this, you follow the PCV line from the front of the valve cover > to the back of the carb. At the back you will find a t fitting or a > solenoid thing with another line coming off it. This other line goes > way down behind the fender to the top of the charcoal canister. At idle > pinch this line closed. If the idle changes, the canister purge valve > is dead. > > You can take this line off the canister and plug it at the carb > 'temporarily' to set the carb up right. You will need this canister > plugged back in to avoid a lot of gas fumes because the canister is the > vent for the gas tank and float bowls. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's > Canadian Off Road Trips Photos: Non members can still view! > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > (More Off Road album links at bottom of the view page) > > Jacob_T wrote: > > > > I've had my 1990 Jeep Wrangler for about 5 years. For a while now > > though it has had trouble keeping a steady idle. Labor Day weekend, I > > had to get a new engine for it, and I thought the mechanic could tune > > the carb so it finally idles correctly. He told me though that he > > doesn't understand the electric feedback carburetor systemt and to try > > someone else. So here is what it does. > > > > It won't idle at all now, and the idle screw is turned almost all the > > way in, When it did idle it keeps sputtering after i turn it off. It > > idles fine while choked when it is cold, but when the choke goes off > > and it warms up, it can't keep running. I was reading on others and > > they mentioned egr valve, but then again I don't know to much about the > > egr valve. When the jeep runs the egr pulsates in and out and doesn't > > just open and stay open or close and stay close, is this how it is > > supposed to work or is it supposed to open and close as necessary. > > Hopefully one of you Jeep lovers out there can help me out. > > > > Jacob |
Re: Rough Idle on 1990 Jeep Wrangler
Thank you for your help in getting my jeep up and running again. It
was greatly appreciated. Mike Romain wrote: > One common failure is the charcoal canister. When it fails totally, the > idle will surge which will make the EGR go in and out or just not want > to work and a pile of oil gets puked into the air filter imitating a > blown engine... > > To test this, you follow the PCV line from the front of the valve cover > to the back of the carb. At the back you will find a t fitting or a > solenoid thing with another line coming off it. This other line goes > way down behind the fender to the top of the charcoal canister. At idle > pinch this line closed. If the idle changes, the canister purge valve > is dead. > > You can take this line off the canister and plug it at the carb > 'temporarily' to set the carb up right. You will need this canister > plugged back in to avoid a lot of gas fumes because the canister is the > vent for the gas tank and float bowls. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's > Canadian Off Road Trips Photos: Non members can still view! > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > (More Off Road album links at bottom of the view page) > > Jacob_T wrote: > > > > I've had my 1990 Jeep Wrangler for about 5 years. For a while now > > though it has had trouble keeping a steady idle. Labor Day weekend, I > > had to get a new engine for it, and I thought the mechanic could tune > > the carb so it finally idles correctly. He told me though that he > > doesn't understand the electric feedback carburetor systemt and to try > > someone else. So here is what it does. > > > > It won't idle at all now, and the idle screw is turned almost all the > > way in, When it did idle it keeps sputtering after i turn it off. It > > idles fine while choked when it is cold, but when the choke goes off > > and it warms up, it can't keep running. I was reading on others and > > they mentioned egr valve, but then again I don't know to much about the > > egr valve. When the jeep runs the egr pulsates in and out and doesn't > > just open and stay open or close and stay close, is this how it is > > supposed to work or is it supposed to open and close as necessary. > > Hopefully one of you Jeep lovers out there can help me out. > > > > Jacob |
Re: Rough Idle on 1990 Jeep Wrangler
Change your fuel filter, attached to the front right frame rail.
God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ Jacob_T wrote: > > Checking the idle tubes turned out to be fruitful as they were nearly > completely clogged. Thank you for you recomendation. |
Re: Rough Idle on 1990 Jeep Wrangler
Change your fuel filter, attached to the front right frame rail.
God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ Jacob_T wrote: > > Checking the idle tubes turned out to be fruitful as they were nearly > completely clogged. Thank you for you recomendation. |
Re: Rough Idle on 1990 Jeep Wrangler
Change your fuel filter, attached to the front right frame rail.
God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ Jacob_T wrote: > > Checking the idle tubes turned out to be fruitful as they were nearly > completely clogged. Thank you for you recomendation. |
Re: Rough Idle on 1990 Jeep Wrangler
left
> Change your fuel filter, attached to the front right frame rail. > God Bless America, Bill O|||||||O > mailto:-------------------- http://www.----------.com/ > > Jacob_T wrote: > > > > Checking the idle tubes turned out to be fruitful as they were nearly > > completely clogged. Thank you for you recomendation. |
Re: Rough Idle on 1990 Jeep Wrangler
left
> Change your fuel filter, attached to the front right frame rail. > God Bless America, Bill O|||||||O > mailto:-------------------- http://www.----------.com/ > > Jacob_T wrote: > > > > Checking the idle tubes turned out to be fruitful as they were nearly > > completely clogged. Thank you for you recomendation. |
Re: Rough Idle on 1990 Jeep Wrangler
left
> Change your fuel filter, attached to the front right frame rail. > God Bless America, Bill O|||||||O > mailto:-------------------- http://www.----------.com/ > > Jacob_T wrote: > > > > Checking the idle tubes turned out to be fruitful as they were nearly > > completely clogged. Thank you for you recomendation. |
Re: Rough Idle on 1990 Jeep Wrangler
Just a FYI for you. The tube that runs from the gas filter and loops
down to the carb has a tendency to get junk in it from gas evaporating when it sits. This junk is after the filter and can easily get back into the idle tubes. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) Jacob_T wrote: > > Checking the idle tubes turned out to be fruitful as they were nearly > completely clogged. Thank you for you recomendation. > > Steve Foley wrote: > > www.off-road.com/jeep/tech/engine/carter.html > > > > > > "Jacob_T" <jacob.thaler@gmail.com> wrote in message > > news:1163443709.939734.295070@k70g2000cwa.googlegr oups.com... > > > I've had my 1990 Jeep Wrangler for about 5 years. For a while now > > > though it has had trouble keeping a steady idle. Labor Day weekend, I > > > had to get a new engine for it, and I thought the mechanic could tune > > > the carb so it finally idles correctly. He told me though that he > > > doesn't understand the electric feedback carburetor systemt and to try > > > someone else. So here is what it does. > > > > > > It won't idle at all now, and the idle screw is turned almost all the > > > way in, When it did idle it keeps sputtering after i turn it off. It > > > idles fine while choked when it is cold, but when the choke goes off > > > and it warms up, it can't keep running. I was reading on others and > > > they mentioned egr valve, but then again I don't know to much about the > > > egr valve. When the jeep runs the egr pulsates in and out and doesn't > > > just open and stay open or close and stay close, is this how it is > > > supposed to work or is it supposed to open and close as necessary. > > > Hopefully one of you Jeep lovers out there can help me out. > > > > > > Jacob > > > |
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