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98 FORD RANGER LOSS OF POWER

posted May 31, 2016 20:59:39 by GILBERT SANCHEZ
GOD BLESS YOU MY BROTHERS!
I have this 98 ford ranger 2.5 with loss of power going up hill, dtc p0340,p1506,p1451,p0135,p0141 and p1409. I started with the p0340 cam sen. thing is I can't find it's not where it's supposed to be. There is no shaft it's not by the power steering pump. Mitch say's behind oil pump pulley but I don't see it. The truck is a 4cyl with 8 spark plugs if it makes a difference. The 02s need to be replaced wires are broken that takes care of p0135 and p0141. I'm working on the idle and egr any help is greatly appreciated thank you.
[Last edited Jun 01, 2016 01:09:54]
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6 replies
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Tyler said Jun 02, 2016 02:21:28
Hey Gilbert!

All the info I can find says the CMP is supposed to be behind the oil pump pulley... Does this picture help at all?

First thing that the P0506 makes me think of is a vacuum leak. Here's an older ScannerDanner video that covers the same code on a newer explorer:

https://youtu.be/Sqpelz3aTNQ


Lots of codes to chase, but I don't necessarily see any of them related to your low power issue. After you get your O2's and the P0340 sorted out, maybe check out the upstream O2's and fuel trims during a test drive?
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GILBERT SANCHEZ said Jun 02, 2016 16:51:07
GOD BLESS YOU MY BROTHERS!
Tyler my brother thank you for your help I have seen that pic. and it's not there I don't see any wires going in that location. Now about that vac. leak there was a leak the erg hose was not plugged in I fixed that I also checked fuel pressure I was thinking that 30 to 40 was good but after looking up the spec. it's 56 to 72 psi. I have a lot to do will keep giving updates. At this time I'm soldering the wire harness it's been to the butcher shop now I have to fix.
Thank You For Your Help.
[Last edited Jun 04, 2016 00:28:40]
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Tyler said Jun 04, 2016 14:02:08
Tyler my brother thank you for your help I have seen that pic. and it's not there I don't see any wires going in that location.


Really? :-/ Not trying to be a smart ass, but is there any chance that somebody removed it previously? Like, during an engine swap and forgot to reinstall it. Maybe check in the same area for a sensor mounting, or a tone wheel?

Now about that vac. leak there was a leak the erg hose was not plugged in I fixed that


Nice! Any idle improvement?

I also checked fuel pressure I was thinking that 30 to 40 was good but after looking up the spec. it's 56 to 72 psi.


Whoa, so the gauge was reading 30-40? That'd sure explain the lack of power. Sounds like you're on the right track, sir.
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GILBERT SANCHEZ said Jun 06, 2016 23:00:50
GOD BLESS YOU MY BROTHERS!

Tyler my brother, thank you again the cam sensor was just hanging from the gear box it seems that someone disconnected the sensor and never put it back. I still get the code p0340 sensor needs to be replaced but the loss of power is gone it was the fuel pump I now get 70 psi.

On the idle it did not get better I don't think the ecm is controlling it. I turn the key and the valve dose not move I have batt. volt just no control.



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Tyler said Jun 07, 2016 00:26:14
Tyler my brother, thank you again the cam sensor was just hanging from the gear box it seems that someone disconnected the sensor and never put it back.


Wow, nice! I KNEW something screwy had to be going on, lol.

I was wondering why this thing wasn't setting misfire or fuel trim codes, and now I'm thinking that the P0340/P0135/P0141 codes were suspending a lot of monitors.

On the idle it did not get better I don't think the ecm is controlling it. I turn the key and the valve dose not move I have batt. volt just no control.


Oooooh, so it was stuck at minimum idle speed then? Any chance you could run the IAC with a scan tool? Otherwise, I think you're down to checking wiring integrity out to the PCM, and the PCM itself. If it's a dead driver, then it's worth checking for a shorted IAC.

Glad to hear you're making progress on this one, Gilbert! The basket case vehicles are always the most challenging.
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GILBERT SANCHEZ said Jun 07, 2016 22:22:53
GOD BLESS YOU MY BROTHERS!


Tyler my brother the idle was not stuck on min. someone put a longer idle screw and it's running 1500 rpms.
I can't control the iac with the scanner , I did check for continuity on the wire from the iac to the ecm it's good. On the iac valve I bench tested it and I do hear it click so I thing it's good. I will talk to the owner see what he want's to do. THANK YOU FOR YOUR HELP BROTHER .

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