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I have a 95 yj and once it warms up i loose power, 1995 jeep

Customer Question
i have a 95 yj...
i have a 95 yj and once it warms up i loose power
JA: What is the model/year of your Jeep?
Customer: 1995 jeep wrangler yj 2.5l
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: have replaced almost everthing
JA: Anything else you think the mechanic should know?
Customer: the local dodge delership is at a loss
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Jeep Mechanic about your situation and then connect you two.
Submitted: 1 year ago.Category: Jeep
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Answered in 2 minutes by:
6/17/2016
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago
Amedee
Amedee, Jeep Technician
Category: Jeep
Satisfied Customers: 26,786
Experience: ASE certified Technician advanced level specialist. Wisconsin certified emissions state inspector
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Hello and welcome! My name isCustomerand I can assist you with your question. What has been replaced for this already?

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Customer reply replied 1 year ago
I have replaced all the sensors exhaust, plugs distrubitor, rotor plugs wires and just about everything else the delership is not even sure what is going on. everything runs great untill after about 15 minutes then it starts bogging down
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

So was the fuel pump replaced?

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Customer reply replied 1 year ago
tank was pulled drained everything in it replaced from tank to rail
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Excellent! So what is the fuel pressure under a load?

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Customer reply replied 1 year ago
35 to 40
Customer reply replied 1 year ago
the shop says everything checks out like its supposed to
Customer reply replied 1 year ago
compression fuel pressure everything is where its supposed to be
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Right, I understand. Of course they are going to say that. What is the engine vacuum at?

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Customer reply replied 1 year ago
im not sure but they said it was good the motor maybe have 30 000 miles on it
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

So did they check for plugged exhaust?

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Customer reply replied 1 year ago
not yet but its all new from manifold to tailpipe three days old
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Ok, have them check engine vacuum at idle and under load (or at 2000 RPM) and let me know. Also, have them take a oxygen sensor reading UNDER A LOAD. Let me know.

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Customer reply replied 1 year ago
ok will do
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Thank you!

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Customer reply replied 1 year ago
All cylinders were tested and found to be 175 cold and hot fuel pressure regulator was replaced and found to be in range fuel pressure was 31 and 46 wide open
Customer reply replied 1 year ago
it is now very slugish even at cold run and acting like it dosnt want to move as well
Customer reply replied 1 year ago
you still there????
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Hello! Sorry for the delay! Just got home from work. What were the readings of the tests I was inquiring about?

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Customer reply replied 1 year ago
presure test where at 175 cold and hot
Customer reply replied 1 year ago
fuel was 31 and 46
Customer reply replied 1 year ago
we have replace the distibuter as well and no change
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Ok, but you still have not answered my question.

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Customer reply replied 1 year ago
all the said was that the oxygen was within limits
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

They need to look closer. Do they know if the engine is running lean or rich under a load?

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Customer reply replied 1 year ago
they said lean
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

There ya go! You have a fuel delivery problem.

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Customer reply replied 1 year ago
everything in new from the tank back what should i look at
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

What sensors were replaced? Please list ALL OF THEM THAT WERE REPLACED

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Customer reply replied 1 year ago
map sensor, oqygen sensor, throttle position sensor,speed sensor
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Were the injectors replaced? Maybe you just have bad fuel injectors.

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Customer reply replied 1 year ago
they were not replaced they were checked and found to be spraying correctly and evenly
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Then how can the engine be running lean under a load?

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Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

It sounds like I am not getting all of the information here.

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Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Conflicting/missing information. Something is clearly not adding up.

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Customer reply replied 1 year ago
ok maybe it wasnt lean maybe it was rich. they really didnt have alot of information to pass im looking through there paperwork and it
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

You might want to call them and speak with them. I need to know if the engine is rich or lean WHEN it bogs down and I need to know the engine vacuum readings at idle and at 2000 rpm.

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Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Also, find out how they installed the distributor. If it is not indexed correctly, it will not run right

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Customer reply replied 1 year ago
engine vacum was 175 at iddle and under load from what they say
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

No internal combustion engine that is street legal can produce 175 inches of vacuum. You might be talking about compression. However, that is not what I am asking. I need the engine VACUUM READINGS. NOT COMPRESSION READINGS

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Customer reply replied 1 year ago
OK now we are on the same page I will have to call them Monday and find out what they were
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Sounds good.

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Customer reply replied 1 year ago
Thank you
Jeep Mechanic: Amedee, Jeep Technician replied 1 year ago

Your welcome

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Amedee
Amedee
Amedee, Jeep Technician
Category: Jeep
Satisfied Customers: 26,786
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Experience: ASE certified Technician advanced level specialist. Wisconsin certified emissions state inspector

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