TPS and IAC connector??? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 02-26-2012
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TPS and IAC connector???

I just bought my 2002 edge 4x4 4.0 5 spd yesterday.

I popped the hood this morning and come to find out that the gray connector from the IAC and TPS is unplugged. The previous owner did an engine replacement, but I'm having trouble finding that connector after the TPS and IAC. It is a gray, 3 wire connector if that helps any.

Also, there is a green vacuum hose unplugged from the engine. Not sure where that goes either :/

Any help is appreciated!
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Old 02-26-2012
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The 3-wire connector might be for the DPFE sensor. If so, the wire color codes would be BN/WH, BN/OR and GY/RD.
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Old 02-26-2012
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Yes. you are correct. The colors match to the colors you gave me. The question is, where does it plug into? I have searched the drivers side of the engine bay-no dice. I have looked under the engine incase it was routed under the engine...I can't find anything that resembles a gray 3 pin connector. I am taking it to a friend tonight to look at the clutch problem, I'll see if he can find something in regards to the connector.
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Old 02-26-2012
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Quote:
Originally Posted by GreaseMonkey01 View Post
Yes. you are correct. The colors match to the colors you gave me. The question is, where does it plug into? I have searched the drivers side of the engine bay-no dice. I have looked under the engine incase it was routed under the engine...I can't find anything that resembles a gray 3 pin connector. I am taking it to a friend tonight to look at the clutch problem, I'll see if he can find something in regards to the connector.
See if any of these links help with the location:

Click Link

Click Link

To see a picture of it, do a search on google for "2002 ford ranger DPFE sensor" and then click Images
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Old 02-26-2012
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That connector plugs into the DPFE (Differential Pressure Feedback EGR) Sensor which your replacement engine apparently does not have. Some years did not have the EGR valve, the EGR tube, the DPFE or the EGR solenoid but the 2002 Ranger 4.0's did. So whoever did the swap may have used a different year. Maybe.

If so, then the mystery green vac hose MAY have been the vac supply to the EGR solenoid. Again, just a possibility.




This is not a Ranger picture but the original 2002 DPFE sensor would have looked SIMILAR to this:

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Old 02-26-2012
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Alright, I bought the DPFE at advance auto for 30 bucks. I tried to plug it in, but I've yet to find the other "missing" vacuum line to the sensor. As it sits now, it will needs the safety inspection done next month. With the CEL on, will it pass? I can possibly clear it before (I am investing in an Ultra gauge).

This week I've got a lot ahead of me. I'm going to DMV tomorrow to get the ownership transferred. I'm ordering a new clutch kit, master/slave cylinder, front/rear brakes, fluids and filters tonight. I might get a new exhaust, from the headers back, any suggestions? I am looking for a single exhaust (I would like to add a hitch sometime later).

Also, my friend who looked at the truck told me he couldn't find the slave cylinder. He said something like a hose was coming from the master and going right thru the bell housing. Is this right? I thought the slave was mounted outside the trans...\

Thanks for the info so far!
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Old 02-26-2012
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If your State requires an emissions inspection (visible and or exhaust gas test) as part of the Safety Inspection, they will fail you with the CEL on as well as any disconnected and or missing emissions control devices. Look under hood for the trucks emission control label and see what systems are listed for your truck.

The Slave Cylinder and throw out bearing are one piece located inside the bell housing. You have to drop the tranny to replace it.
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Old 02-26-2012
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Quote:
Originally Posted by GreaseMonkey01 View Post
Alright, I bought the DPFE at advance auto for 30 bucks. I tried to plug it in, but I've yet to find the other "missing" vacuum line to the sensor. As it sits now, it will needs the safety inspection done next month.
There are no vacuum lines connected to the DPFE. There are 2 short hoses that connect the DPFE ports to ports teed from the steel tube that runs between the exhaust manifold and the EGR.

You'd need to have all of the parts I mentioned in my earlier post and get everything properly wired and plumbed to make the EGR system operational. Without the whole system working, the PCM will repeatedly light the CEL and store EGR-related trouble codes.





Quote:
Originally Posted by GreaseMonkey01 View Post
With the CEL on, will it pass? I can possibly clear it before (I am investing in an Ultra gauge
If you reset the PCM memory right before the inspection in an attempt to eliminate the CEL, a P1000 code will be set and you will fail anyway.
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Old 02-26-2012
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Yep, you are correct again! I was looking earlier at a plug in the exhaust manifold, where the EGR tube connects and a plate in the intake manifold where the EGR valve should bolt to. I will have to visit a junk yard tomorrow to find that darn tube. I can't seem to find it anywhere online.
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Old 02-26-2012
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You might have a 2003 engine. That's how they were set up.

Try to find a 2001~2002 4.0 Ranger donor and be sure to get everything including the EVR solenoid and the vacuum line that goes between it and the EGR.
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