1987 Jeep Wagoneer Limited Fuel Injected Inline Six Cylinder

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Johnny641 - 26 Nov 2005 05:43 GMT

I bought my Wagoneer recently. It ran fine, but lately it would not go
over thirty five without choking out. I would have to let pressure off
the accelerator for it to keep running. The other day I was driving
home from work and it kept losing power and eventually died on me. I
barely got it home. It will start o.k., but will not remain running. I
replaced the fuel filter, plug wires, spark plugs, distributor cap and
rotor, and air filter. It starts, but will not keep running very long.
I can not figure out the problem on my own. I know it is a good
vehicle, so if someone can help me figure out the problem and get her
running again I would greatly appreciate it. Thank You for any help or
suggestions.

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Ted Mittelstaedt - 26 Nov 2005 09:43 GMT

> I bought my Wagoneer recently. It ran fine, but lately it would not go
> over thirty five without choking out. I would have to let pressure off
[quoted text clipped - 7 lines]
> running again I would greatly appreciate it. Thank You for any help or
> suggestions.

Check fuel pressure with the appropriate fuel pressure guage, available
at any auto parts store.

Check exhaust backpressure.

Ted

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Johnny641 - 26 Nov 2005 23:55 GMT

I did not make it to the parts store, working twelve hours. I will see
if they are open Sunday though. I went out and started my Wagon and it
started with a little coaxing. I did notice that the second injector in
was leaking gas. Going to get a o-ring kit. I turned the injector a
little and the engine reacted by staying running. It idles pretty good,
but sounds as if it is missing? I put on those new parts but as I see
they did not help much. I tried to drive it but as soon as the
transmission put a load on the motor---the motor seemed to lose its
power and want to cut out and die. I feel pretty ignorant that I can
not pinpoint the exact problem. I do not mind putting on a new fuel
pump, but I would like to be sure that is the problem. What will the
exhaust backpressure tell me? I do appreciate your help and
input----THANK YOU!!!!

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Ted Mittelstaedt - 27 Nov 2005 10:18 GMT

> I did not make it to the parts store, working twelve hours. I will see
> if they are open Sunday though. I went out and started my Wagon and it
[quoted text clipped - 9 lines]
> exhaust backpressure tell me? I do appreciate your help and
> input----THANK YOU!!!!

You don't just put on a new fuel pump without checking fuel pressure
with the appropriate test guage.

If exhaust backpressure is high the cat is plugged. Generally you have
an exhaust place test this.

Ted

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Johnny641 - 27 Nov 2005 15:48 GMT

Thank You. You are right, I sure would not spend a $100.00 on a new
pump if I do not have too. I am curious to see what the pressure is. It
is nice of you to help me out and guide me in the right direction. I do
very much appreciate it.

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