Power steering pump almost causes engine to stall - JeepForum.com

 
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post #1 of 14 Old 01-02-2010, 09:46 PM Thread Starter
InEmberClad
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Power steering pump almost causes engine to stall

So I just installed a new power steering pump and fired her up to test it out, and when the car is at idle if I turn the wheel it causes the rpms to drop considerably to the point where it almost stalls out. Spark plugs are all firing. Could this be a timing issue? dead cylinder? CPS? If it sounds like I may just need to adjust the timing, does anybody know if there is a write up for this with pictures or something? I've read a million posts about adjusting timing but I don't understand it past placing the engine at TDC.
Help please!

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post #2 of 14 Old 01-02-2010, 10:25 PM
Straycur
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Alright, let's start at point A. Did you bleed your new power steering pump after you put it on? It takes a lot of power when its dry. If you didn't have any ignition problems before, you need to look at the recent change for the first issue.
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post #3 of 14 Old 01-02-2010, 10:31 PM
MJMPC
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What size tires do you have on it ?

MIKE

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post #4 of 14 Old 01-02-2010, 10:55 PM Thread Starter
InEmberClad
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Quote:
Originally Posted by Straycur View Post
Alright, let's start at point A. Did you bleed your new power steering pump after you put it on? It takes a lot of power when its dry. If you didn't have any ignition problems before, you need to look at the recent change for the first issue.
I filled it up with ps fluid, but I didn't bleed the line, I'm new at this didn't know I'd need to. Where is the bleed screw?

I did Just discover that one of the spark plugs is a bit fouled up but I had test lights on there and they were all lighting up when the engine was running.
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What size tires do you have on it ?
Its got 31s on there.
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post #5 of 14 Old 01-02-2010, 11:13 PM
Straycur
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Here is one way to "get 'er done"
Bleeding a Power Steering System | eHow.com
you didn't say if you had any issues before the PS pump?
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post #6 of 14 Old 01-03-2010, 12:28 PM Thread Starter
InEmberClad
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Originally Posted by Straycur View Post
you didn't say if you had any issues before the PS pump?
Bled the system, problem persists. The thing is I've never actually driven the jeep, its been getting pieced together for the last 6 months in my back yard. I finally got it to stop coughing and smoking and to idle properly, thought I was almost ready to get it on the road. My neighbor insists that it must be a timing thing but I have no idea how to check/adjust the timing.
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post #7 of 14 Old 01-03-2010, 01:12 PM
ritjobbie
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On the 2.5L there is a pressure switch that revs the engine if you crank the wheel at idle. When you start to turn the wheel, you should see the tach climb just a touch. The straight six doesn't have this because it has more nuts at idle.

Then again, this might be something only on newer YJs. Look for a tumor on the PS pressure line right next to the pump. It'll have some wires going to it.

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post #8 of 14 Old 01-03-2010, 01:48 PM
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^^^That was my first thought.
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post #9 of 14 Old 01-03-2010, 03:19 PM Thread Starter
InEmberClad
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I replaced the ps pressure switch with the pump, its brand new
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post #10 of 14 Old 01-03-2010, 04:43 PM
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Quote:
Originally Posted by InEmberClad View Post
I replaced the ps pressure switch with the pump, its brand new
But does it work? Bad wiring up the food chain might be causing your problems. Got a multimeter?

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post #11 of 14 Old 01-03-2010, 05:03 PM
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x2 on the switch problem: You need to make sure that you use "Sensor Safe" sealant when you screw that sensor into the Power Steering pressure hose. If you used teflon tape, or any other selalant than there is no contact and thus, the pressure switch is not sending a signal to the computer to up the revs.

BTW - where did you get your sensor? I'm in need of one...
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post #12 of 14 Old 01-03-2010, 05:40 PM Thread Starter
InEmberClad
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Quote:
Originally Posted by bharris68 View Post
x2 on the switch problem: You need to make sure that you use "Sensor Safe" sealant when you screw that sensor into the Power Steering pressure hose. If you used teflon tape, or any other selalant than there is no contact and thus, the pressure switch is not sending a signal to the computer to up the revs.

BTW - where did you get your sensor? I'm in need of one...
Good to know I'll pick some of that up and let you guys know if it changes anything. I got the switch at here: Oil Pressure Switch*53000970 by the Jeep Specialists | Morris 4x4 Center
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post #13 of 14 Old 01-15-2010, 03:41 PM Thread Starter
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Ok, so I properly installed the pressure switch, and replaced the pressure hose since I discovered a kink in the metal part down by the gear box. The problem improved but did not go away entirely. I messed around with a multimeter and a test light for awhile and did not find any problems with the wiring to the pressure switch. Any other possibilities? Gear box might be messed up? Any other reason the engine might not be able to handle the p/s pump?
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post #14 of 14 Old 01-16-2010, 06:55 PM Thread Starter
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Sorry not trying to bump, but I just had a thought while looking at a post on the cherokee forum. Is it possible that the pully just isn't spinning freely? and would I need to take the pump apart to lubricate it? It's a brand new pump but I never greased it or anything before installing it.
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