Re: 87 YJ again....
Right you are. My mistake. I conveniently overlooked the 4 banger part.
Scott 91YJ "Earle Horton" <earle@vascongau.usa> wrote in message news:459af9f8$0$3517$a82e2bb9@reader.athenanews.co m... > "Steve Foley" <steve.foley@DELETEatt.net> wrote in message > news:DDCmh.629877$QZ1.189511@bgtnsc04-news.ops.worldnet.att.net... >> "reconair" <reconair@staffnet.com> wrote in message >> news:12pls91evrk9p4c@corp.supernews.com... >> > 87YJ is carbuerated, not FI. >> >> I thought the four-banger was injected. I could be wrong. My 87 YJ >> has a 258 (as did my 73 Cherokee and 78 CJ) >> > All the four banger AMC engines are fuel injected in the YJ. In 1991 they > went from throttle body to MPI. The six bangers went from carburetor to > MPI > in 1990. I am not sure of the exact manufacturing dates. Service and > replacement procedures are going to be different for the OP's throttle > body > FI than for the later model, more common MPI. > > Earle > > |
Re: 87 YJ again....
Right you are. My mistake. I conveniently overlooked the 4 banger part.
Scott 91YJ "Earle Horton" <earle@vascongau.usa> wrote in message news:459af9f8$0$3517$a82e2bb9@reader.athenanews.co m... > "Steve Foley" <steve.foley@DELETEatt.net> wrote in message > news:DDCmh.629877$QZ1.189511@bgtnsc04-news.ops.worldnet.att.net... >> "reconair" <reconair@staffnet.com> wrote in message >> news:12pls91evrk9p4c@corp.supernews.com... >> > 87YJ is carbuerated, not FI. >> >> I thought the four-banger was injected. I could be wrong. My 87 YJ >> has a 258 (as did my 73 Cherokee and 78 CJ) >> > All the four banger AMC engines are fuel injected in the YJ. In 1991 they > went from throttle body to MPI. The six bangers went from carburetor to > MPI > in 1990. I am not sure of the exact manufacturing dates. Service and > replacement procedures are going to be different for the OP's throttle > body > FI than for the later model, more common MPI. > > Earle > > |
Re: 87 YJ again....
Many people do, but when you have them race balanced, install a wild cam,
override the rev limiter, and install double injectors you can get a lot of power out of them. (I wish.) Earle "reconair" <reconair@staffnet.com> wrote in message news:12pmdc56039sn79@corp.supernews.com... > Right you are. My mistake. I conveniently overlooked the 4 banger part. > > Scott > 91YJ > "Earle Horton" <earle@vascongau.usa> wrote in message > news:459af9f8$0$3517$a82e2bb9@reader.athenanews.co m... > > "Steve Foley" <steve.foley@DELETEatt.net> wrote in message > > news:DDCmh.629877$QZ1.189511@bgtnsc04-news.ops.worldnet.att.net... > >> "reconair" <reconair@staffnet.com> wrote in message > >> news:12pls91evrk9p4c@corp.supernews.com... > >> > 87YJ is carbuerated, not FI. > >> > >> I thought the four-banger was injected. I could be wrong. My 87 YJ > >> has a 258 (as did my 73 Cherokee and 78 CJ) > >> > > All the four banger AMC engines are fuel injected in the YJ. In 1991 they > > went from throttle body to MPI. The six bangers went from carburetor to > > MPI > > in 1990. I am not sure of the exact manufacturing dates. Service and > > replacement procedures are going to be different for the OP's throttle > > body > > FI than for the later model, more common MPI. > > > > Earle > > > > > > |
Re: 87 YJ again....
Many people do, but when you have them race balanced, install a wild cam,
override the rev limiter, and install double injectors you can get a lot of power out of them. (I wish.) Earle "reconair" <reconair@staffnet.com> wrote in message news:12pmdc56039sn79@corp.supernews.com... > Right you are. My mistake. I conveniently overlooked the 4 banger part. > > Scott > 91YJ > "Earle Horton" <earle@vascongau.usa> wrote in message > news:459af9f8$0$3517$a82e2bb9@reader.athenanews.co m... > > "Steve Foley" <steve.foley@DELETEatt.net> wrote in message > > news:DDCmh.629877$QZ1.189511@bgtnsc04-news.ops.worldnet.att.net... > >> "reconair" <reconair@staffnet.com> wrote in message > >> news:12pls91evrk9p4c@corp.supernews.com... > >> > 87YJ is carbuerated, not FI. > >> > >> I thought the four-banger was injected. I could be wrong. My 87 YJ > >> has a 258 (as did my 73 Cherokee and 78 CJ) > >> > > All the four banger AMC engines are fuel injected in the YJ. In 1991 they > > went from throttle body to MPI. The six bangers went from carburetor to > > MPI > > in 1990. I am not sure of the exact manufacturing dates. Service and > > replacement procedures are going to be different for the OP's throttle > > body > > FI than for the later model, more common MPI. > > > > Earle > > > > > > |
Re: 87 YJ again....
Many people do, but when you have them race balanced, install a wild cam,
override the rev limiter, and install double injectors you can get a lot of power out of them. (I wish.) Earle "reconair" <reconair@staffnet.com> wrote in message news:12pmdc56039sn79@corp.supernews.com... > Right you are. My mistake. I conveniently overlooked the 4 banger part. > > Scott > 91YJ > "Earle Horton" <earle@vascongau.usa> wrote in message > news:459af9f8$0$3517$a82e2bb9@reader.athenanews.co m... > > "Steve Foley" <steve.foley@DELETEatt.net> wrote in message > > news:DDCmh.629877$QZ1.189511@bgtnsc04-news.ops.worldnet.att.net... > >> "reconair" <reconair@staffnet.com> wrote in message > >> news:12pls91evrk9p4c@corp.supernews.com... > >> > 87YJ is carbuerated, not FI. > >> > >> I thought the four-banger was injected. I could be wrong. My 87 YJ > >> has a 258 (as did my 73 Cherokee and 78 CJ) > >> > > All the four banger AMC engines are fuel injected in the YJ. In 1991 they > > went from throttle body to MPI. The six bangers went from carburetor to > > MPI > > in 1990. I am not sure of the exact manufacturing dates. Service and > > replacement procedures are going to be different for the OP's throttle > > body > > FI than for the later model, more common MPI. > > > > Earle > > > > > > |
Re: 87 YJ again....
EGR valve sticking open?
Spdloader "Boog44" <hoosierfan666@yahoo.com> wrote in message news:fb0622e9c1e761fabdfe8556c3b16af1@localhost.ta lkaboutautos.com... > Well Jeep people, My 87 YJ 4cyl. is hitting me again!!!! I can drive it > once per day and as long as I leave it running it is fine but, as soon as > i get to where I'm going and shut it off, restarting it isn't bad but it > doesn't idle as good and it dosen't have the same power it had. Lots of > coughing and spitting, a backfire here and there like it's having trouble > getting a constant flow of fuel. Help me!!!! > |
Re: 87 YJ again....
EGR valve sticking open?
Spdloader "Boog44" <hoosierfan666@yahoo.com> wrote in message news:fb0622e9c1e761fabdfe8556c3b16af1@localhost.ta lkaboutautos.com... > Well Jeep people, My 87 YJ 4cyl. is hitting me again!!!! I can drive it > once per day and as long as I leave it running it is fine but, as soon as > i get to where I'm going and shut it off, restarting it isn't bad but it > doesn't idle as good and it dosen't have the same power it had. Lots of > coughing and spitting, a backfire here and there like it's having trouble > getting a constant flow of fuel. Help me!!!! > |
Re: 87 YJ again....
EGR valve sticking open?
Spdloader "Boog44" <hoosierfan666@yahoo.com> wrote in message news:fb0622e9c1e761fabdfe8556c3b16af1@localhost.ta lkaboutautos.com... > Well Jeep people, My 87 YJ 4cyl. is hitting me again!!!! I can drive it > once per day and as long as I leave it running it is fine but, as soon as > i get to where I'm going and shut it off, restarting it isn't bad but it > doesn't idle as good and it dosen't have the same power it had. Lots of > coughing and spitting, a backfire here and there like it's having trouble > getting a constant flow of fuel. Help me!!!! > |
Re: 87 YJ again....
I would definately check/ replace your O2 sensor. This would give you
the sporadic symptoms and in an 87 you probably have 150,000+ miles anyway...so its time to replace. Good Luck Adam On Jan 3, 1:35 am, "Spdloader" <askfo...@nospam.triad.rr.com> wrote: > EGR valve sticking open? > > Spdloader > > "Boog44" <hoosierfan...@yahoo.com> wrote in messagenews:fb0622e9c1e761fabdfe8556c3b16af1@local host.talkaboutautos.com... > > > Well Jeep people, My 87 YJ 4cyl. is hitting me again!!!! I can drive it > > once per day and as long as I leave it running it is fine but, as soon as > > i get to where I'm going and shut it off, restarting it isn't bad but it > > doesn't idle as good and it dosen't have the same power it had. Lots of > > coughing and spitting, a backfire here and there like it's having trouble > > getting a constant flow of fuel. Help me!!!! |
Re: 87 YJ again....
I would definately check/ replace your O2 sensor. This would give you
the sporadic symptoms and in an 87 you probably have 150,000+ miles anyway...so its time to replace. Good Luck Adam On Jan 3, 1:35 am, "Spdloader" <askfo...@nospam.triad.rr.com> wrote: > EGR valve sticking open? > > Spdloader > > "Boog44" <hoosierfan...@yahoo.com> wrote in messagenews:fb0622e9c1e761fabdfe8556c3b16af1@local host.talkaboutautos.com... > > > Well Jeep people, My 87 YJ 4cyl. is hitting me again!!!! I can drive it > > once per day and as long as I leave it running it is fine but, as soon as > > i get to where I'm going and shut it off, restarting it isn't bad but it > > doesn't idle as good and it dosen't have the same power it had. Lots of > > coughing and spitting, a backfire here and there like it's having trouble > > getting a constant flow of fuel. Help me!!!! |
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