Loss of power then stalling 95 D90 - Defender Source
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  #1  
Old April 27th, 2015, 08:56 AM
snow686
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Loss of power then stalling 95 D90

So I took a 2 hour trip out to Montauk, NY this weekend and after about an hour I had loss of power for a few seconds and then power would come back. Truck wouldn't stall, it's just that nothing would happen. Then on the way back home I had loss of power after about 20 minutes then an hour into is stalled at a stoplight. Then on the highway about 20 minutes later it stalled completely. It would only start if I held gas all the way too floor then started truck. This happened every few minutes until I got home. I ordered a new fuel filter, but now that I'm looking at the FAQ, I'm wondering if it's more then that. Yes, I have a check engine light on. Anybody here have a similar situation?
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  #2  
Old April 27th, 2015, 09:53 AM
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Jason England
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Air idle control valve is probably sticky or you have a loose air hose ... the big fat one is a typical culprit and likely your would benefit from replacement if it hasn't already been done.

For the AICV ... simply remove ... clean with carb cleaner and replace. If that doesn't fix it replace with one from autozone for about $45.

PM me if you need help
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  #3  
Old April 27th, 2015, 10:10 AM
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Quote:
Originally Posted by leastonce View Post
Air idle control valve is probably sticky or you have a loose air hose ... the big fat one is a typical culprit and likely your would benefit from replacement if it hasn't already been done.

For the AICV ... simply remove ... clean with carb cleaner and replace. If that doesn't fix it replace with one from autozone for about $45.

PM me if you need help
Thanks I will try it when I get home.
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  #4  
Old April 27th, 2015, 10:20 AM
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Sam
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I've had a similar problem before and it turned out to be the PCV (small t-fitting connecting the hose from the plenum to the valve cover) If there's even a small amount of dirt in the that little brass fitting it can really affect how your truck runs.
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  #5  
Old April 27th, 2015, 10:26 AM
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Sam
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Looks like this
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  #6  
Old April 27th, 2015, 11:13 AM
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Come along to NYC Meetup on thursday if you can and we'll diagnose the CEL for you. I believe you already met Jimmy?
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #7  
Old April 27th, 2015, 11:35 AM
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Originally Posted by leastonce View Post
Come along to NYC Meetup on thursday if you can and we'll diagnose the CEL for you. I believe you already met Jimmy?
No Jimmy, met george. User Geolis. Where is the meetup? My wife has class on Thursday night but I might be able to drop the kids off with my sister. If not, she's done with classes in like 3 weeks anyway.
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  #8  
Old April 27th, 2015, 11:43 AM
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The meetup is at a Bar called 'Over the Eight' on Union Ave in Williamsburg. People get their around 6:30pm onward.
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #9  
Old April 27th, 2015, 03:51 PM
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David Frank
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Sounds like my recent problems. I cleaned my stepper (aicv), but it persisted. Then I finally got the cel and knew I'd have a reference code thrown to the readout. You should have a code by now as well. My money is on 44. O2 sensors. Easy peasy. Best of luck.
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  #10  
Old April 27th, 2015, 05:05 PM
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Bill Adams
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Classic symptoms of a bad ignition amplifier module.
Guys, stepper motor only comes into play on deceleration. If the truck is dying when you let off the gas, then start thinking stepper. O2 sensors have nothing at all to do with ignition. You can run and drive just fine without o2 sensors.
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  #11  
Old April 27th, 2015, 05:43 PM
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Why not consider Bad gas as a potential culprit?
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  #12  
Old April 27th, 2015, 06:04 PM
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Quote:
Originally Posted by Rocky View Post
Why not consider Bad gas as a potential culprit?
Because bad gas wouldn't be intermittent.
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #13  
Old April 27th, 2015, 06:25 PM
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Quote:
Originally Posted by leastonce View Post
Because bad gas wouldn't be intermittent.


What if its mixed in with good gas??
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  #14  
Old April 27th, 2015, 06:36 PM
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Quote:
Originally Posted by rover4x4 View Post
What if its mixed in with good gas??
You're ouching me.
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  #15  
Old April 27th, 2015, 06:44 PM
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Sam
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Just try cleaning that little orifice in the PCV. It's easy, cost nothing to do and it may fix it.
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  #16  
Old April 27th, 2015, 08:12 PM
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Quote:
Originally Posted by rover4x4 View Post
What if its mixed in with good gas??
I'll let you think about the logic for a while.
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #17  
Old April 27th, 2015, 10:01 PM
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David Frank
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Quote:
Originally Posted by o2batsea View Post
Classic symptoms of a bad ignition amplifier module. Guys, stepper motor only comes into play on deceleration. If the truck is dying when you let off the gas, then start thinking stepper. O2 sensors have nothing at all to do with ignition. You can run and drive just fine without o2 sensors.
Very true about driving without O2 sensors. But if they are failing and sending a bad signal, it screws with the engine management, and is worse than no signal. I don't have a ton of knowledge about engines, and I don't mean to lead on that I do, I'm just speaking from an experience I had that was exactly as the op described.

Wouldn't he have a code by now?
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  #18  
Old April 27th, 2015, 10:31 PM
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Quote:
Originally Posted by o2batsea View Post
Classic symptoms of a bad ignition amplifier module.
Guys, stepper motor only comes into play on deceleration. If the truck is dying when you let off the gas, then start thinking stepper. O2 sensors have nothing at all to do with ignition. You can run and drive just fine without o2 sensors.
I agree with Bill, and the OP symptoms seem similar to those I had on and off until I replaced my module with a new one (and relocation kit). So far so good, and the issues seem to have ceased.
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  #19  
Old April 27th, 2015, 11:55 PM
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Chris Davis
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Did you read your code yet?
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  #20  
Old April 28th, 2015, 12:18 AM
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Robert Lynch
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everything points to spark..... Coil, Ignition module, wires, plugs and timing.. I had an intermittent cut out which was the the distributor, now CEL 45... hopefully a new O2 sensor coil and ignition module will fix it... pretty much nothing left at this point (already did the clean out, new TPS, ACL, and the normal culprits, truck runs fine on a CEL too,
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