jeepdoggydogB Posted January 18, 2009 Share Posted January 18, 2009 Well my second fuel pump assembly cracked and puked fuel down the side of the tank, I have called every junk yard in the country (I think we all know the new airtek is for a cherokee). I found a 1991 but it is from a 4 cylinder. Does anyone know if the 1991 4 cylinder will work in the 1991 4.0 liter six? The fellows at JW's are saying yes but I thought folks here might have better knowledge. TIA :oops: Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 18, 2009 Share Posted January 18, 2009 Well my second fuel pump assembly cracked and puked fuel down the side of the tank, I have called every junk yard in the country (I think we all know the new airtek is for a cherokee). I found a 1991 but it is from a 4 cylinder. Does anyone know if the 1991 4 cylinder will work in the 1991 4.0 liter six? The fellows at JW's are saying yes but I thought folks here might have better knowledge. TIA :oops: According to my 91 parts manual the senders are the same for all 91 MJs, there is no differentiation between engines. Same goes for the pump, so it should work just fine. :cheers: Link to comment Share on other sites More sharing options...
jeepdoggydogB Posted January 18, 2009 Author Share Posted January 18, 2009 Well my second fuel pump assembly cracked and puked fuel down the side of the tank, I have called every junk yard in the country (I think we all know the new airtek is for a cherokee). I found a 1991 but it is from a 4 cylinder. Does anyone know if the 1991 4 cylinder will work in the 1991 4.0 liter six? The fellows at JW's are saying yes but I thought folks here might have better knowledge. TIA :oops: According to my 91 parts manual the senders are the same for all 91 MJs, there is no differentiation between engines. Same goes for the pump, so it should work just fine. :cheers: Thanks Don :cheers: these things are getting very hard to find I hope some after market company steps up as I have heard a few of us ask where they could be bought and this is my 3rd unit. :eek: The first died to rust, the second cracked at the hose nipples, and hopefully the 3rd from JW wreckers will be the last. :popcorn: Link to comment Share on other sites More sharing options...
fiatslug87 Posted January 18, 2009 Share Posted January 18, 2009 Hi Joe, There are two MJs at the pick-n-pull in Fairfield (near the Air Force base) one is an '86 the other an '89 (?) both were 2.5L, I think the fuel pumps are still in them. I'm not sure if they're the same as the '91s but if they are that's an option. Mike Link to comment Share on other sites More sharing options...
jeepdoggydogB Posted January 18, 2009 Author Share Posted January 18, 2009 Hi Joe,There are two MJs at the pick-n-pull in Fairfield (near the Air Force base) one is an '86 the other an '89 (?) both were 2.5L, I think the fuel pumps are still in them. I'm not sure if they're the same as the '91s but if they are that's an option. Mike Thanks Mike :cheers: Sounds like another well worth while JY safari! As I recall the earlier pumps polarity is the reverse of the later model but I am not sure the year breakdown. I quickly paid the $125 asking price at JW because my truck is my DD and I have my Mother-in-Laws toyota corolla (which I hate). These things are becoming scarce and most of us don't realize it until we need one. Link to comment Share on other sites More sharing options...
El Comanche Posted January 18, 2009 Share Posted January 18, 2009 Hello from the Great White North. In the summer I too needed a replacement sending unit. But since none were available, the rad&tank shop where I got a new tank, welded or brazed the crack in the unit. So far so good. Gord :Canadaflag: Link to comment Share on other sites More sharing options...
bigd44889 Posted January 18, 2009 Share Posted January 18, 2009 the sending unit are the same the pump itself are diff. 2.5 pump is 33 to 45 psi 4.0 pump is 90 to 110 psi Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 18, 2009 Share Posted January 18, 2009 the sending unit are the same the pump itself are diff.2.5 pump is 33 to 45 psi 4.0 pump is 90 to 110 psi The fuel pumps are the same on the MJ/XJ HOs. Joe has a 91. Link to comment Share on other sites More sharing options...
bigd44889 Posted January 18, 2009 Share Posted January 18, 2009 :bowdown: ok Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now