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post #1 of 28 Old 12-10-2019, 07:51 PM Thread Starter
40vern
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timing

started my motor for the first time today. i have my motor in from my swap.
i filled the radiator with coolant and started the motor. i had also installed a new heater core. so i left the cap off and ran the heater on hot so i could burp the system.
once the motor reached operating temp, i noticed the exhaust pipe was starting to turn red.

so i am wondering if it would do this because i have not hooked everything up. i did not have the breather box connected. the charcole canister and the vent tube from the fuel tank.

so where does the vent tube line go to that runs from the fuel tank to the motor? it runs along the frame beside the fuel line.

anyway with all this stuff not connected, would this make exhaust pipe run hot?

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post #2 of 28 Old 12-11-2019, 09:21 AM
tworley
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Garage
Clogged catalytic converter or faulty 02 sensors causing the engine to run lean.

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post #3 of 28 Old 12-11-2019, 10:44 AM
jtec
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1999 XJ - maybe ask the computer - likely a LEAN or MAP code.

The vacuum lines will need to be connected - there should be a 'legend' on radiator support showing vac line routing.

If no diagram let us know someone could check manual for a diagram for you.

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #4 of 28 Old 12-11-2019, 11:24 AM Thread Starter
40vern
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thanks

Quote:
Originally Posted by jtec View Post
1999 XJ - maybe ask the computer - likely a LEAN or MAP code.

The vacuum lines will need to be connected - there should be a 'legend' on radiator support showing vac line routing.

If no diagram let us know someone could check manual for a diagram for you.
i need to see if i can find a diagram for the vac lines.

i for got to take a picture of them before i tore the diagram off on the under side of the hood. i bed lined the engine bay the underside of the hood
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post #5 of 28 Old 12-11-2019, 08:32 PM Thread Starter
40vern
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I hooked everything up today. Let it idle for a while while I was doing some things. I kept an eye on the exhaust manifold. It never did turn red. Temp stayed normal too.

These are some things that I could not find.
One is the vent tube from the fuel tank. I cannot remember where this plugs into.
The other thing is the charcoal canister. I was wondering if a hose went here.

The last picture is something that goes to the transmission. Where can I buy this?
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post #6 of 28 Old 12-15-2019, 01:19 PM
Rubi4MyMrs
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Here are some diagrams from the '98 FSM. Hope they help.
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post #7 of 28 Old 12-15-2019, 07:47 PM Thread Starter
40vern
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hose

this is the place that i cannot fine where a hose goes. to me from the diagram it looks like i am missing a part, looks like the hose goes to the LDP. i dont have that part nor did i remove that part from the wrecked jeep.
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post #8 of 28 Old 12-15-2019, 07:58 PM
Rubi4MyMrs
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It looks like you need 3 hoses. One for vacuum to the intake manifold. One to the gas tank. One to the leak detection pump. The top one appears to be the biggest & goes to the leak detection pump.

Note that the diagrams are from the 1998 FSM. I don’t think the 1997s had a leak detection pump so are you sure you have the 1998 setup?

Maybe photos of the larger area would help too.

Other than that I don't have any info on that.
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post #9 of 28 Old 12-15-2019, 08:21 PM Thread Starter
40vern
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ok thanks

Quote:
Originally Posted by Rubi4MyMrs View Post
It looks like you need 3 hoses. One for vacuum to the intake manifold. One to the gas tank. One to the leak detection pump. The top one appears to be the biggest & goes to the leak detection pump.

Note that the diagrams are from the 1998 FSM. I donít think the 1997s had a leak detection pump so are you sure you have the 1998 setup?

Maybe photos of the larger area would help too.

Other than that I don't have any info on that.
i will go and get some pictures for you. as far as i know it is a 98. i will check that too.
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post #10 of 28 Old 12-15-2019, 08:36 PM Thread Starter
40vern
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I went to the body of the wrecked Jeep. It says 1/98. I was always told the then it is this close to the beginning of the year then it would really end up being like a 97.

in the top picture i have a line running from the intake manifold to the purge solenoid
the middle picture going from the purge solenoid to the cannister
the last picture is of the fuel vent tube that is connected to the bottom of the cannister
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post #11 of 28 Old 12-15-2019, 09:03 PM
Rubi4MyMrs
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Yes, near the year change they may have some of the previous year components.



It does look like the canister is a 1998 but where is the leak detection pump? It is hard to tell for sure but comparing the photos to the diagrams I posted above I don’t see it.



How does it compare to your original TJ? And was that a 1997 or 1998?
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post #12 of 28 Old 12-15-2019, 09:32 PM Thread Starter
40vern
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the leak detection pump is the part that i do not have. if the jeep should have one then it did not come on the wrecked jeep with all these parts.
the place on the canister does not look like it has had a large hose in it for a very long time.. i also do not have an extra electric plug it the ldp had a place for a plug

the parts that i do have were from a 97 4 cylinder. the canister on that jeep was round
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post #13 of 28 Old 12-15-2019, 10:14 PM
Rubi4MyMrs
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That is what I see in the 1997 FSM, a round canister. There is not much else shown though.



Why canít you use everything from the 1997? That is what you originally had & presumably would still be for registration & inspection if you have that where you are.
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post #14 of 28 Old 12-15-2019, 10:43 PM
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For what it's worth, my '00 was never equipped with a leak detection pump. The large port on the evap canister just has a vent cap on it.

2000 TJ SE
2005 LJ Rubicon
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post #15 of 28 Old 12-16-2019, 05:49 AM Thread Starter
40vern
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ok

Quote:
Originally Posted by Rubi4MyMrs View Post
That is what I see in the 1997 FSM, a round canister. There is not much else shown though.



Why canít you use everything from the 1997? That is what you originally had & presumably would still be for registration & inspection if you have that where you are.
i think that is a very good idea and i even considered doing that but since i have used the wiring harness from the 98 and all the other parts, i thought i should keep it all.
the canister from the 98 has the cruise control on it. i have swapped in the steering column and all that stuff too. dont know if it will work with a 5 speed but i thought i would give it a try.

but either way i like your idea and i may even do that if that is what it takes to make the check engine light go off
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