Question about 1996 Mercury Villager

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Hey there, i have a 95 villanger. and it has a tps, egr, and nock sensor problem. If i replace the tps will i need to calibrate it? And as far as changing the nock sensor. how hard it is? thanks in advance, -randy

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Never, ever replace a knock sensor

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Posted on Nov 09, 2010


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How to replace the TPS.

no engine option stated, and is key fact to know here.
The 5.7L V8 engine does not use a separate Throttle Position Sensor (TPS) on the throttle body.

remove old TPS, and bolt on new.
its like 2 or 3 screws. no big deal.
but needs to be calibrated per fsm.
ill take a wild guess, 3.7L
3.7L Engine and 4.7.
  1. Remove air resonator tube at throttle body.
  2. Disconnect TPS electrical connector.
  3. Remove two TPS mounting screws.
  4. Remove TPS.
The throttle shaft end of throttle body slides into a socket in TPS. The TPS must be installed so that it can be rotated a few degrees. (If sensor will not rotate, install sensor with throttle shaft on other side of socket tangs). The TPS will be under slight tension when rotated.
  1. Install TPS and retaining screws.
  2. Tighten screws to 60 inch lbs. (7 Nm) torque.
  3. Connect TPS electrical connector to TPS.
  4. Manually operate throttle (by hand) to check for any TPS binding before starting engine.
  5. Install air cleaner tube to throttle body.
some TPS need calibration
to see what yours needs, read the FSM
or at
or here. I think all engines here, are TPS PCM autocalibrated.

read WJ car here

May 24, 2014 | 2005 Jeep Grand Cherokee

1 Answer

95 Blazer replacing TPS

The TPS (Throttle Position Sensor) is actually easy to replace - it is located on the throttle body on the engine and is attached to the throttle linkage and flapper valve inside the throttle body. If you have a decent code scanner, you can actually view the position of the throttle as you move the linkage to see if it is tracking linearly with no gaps. This condition can also be caused by a stuck or faulty EGR (Exhaust Gas Recirculation) valve, regardless of its age. Recheck all codes to be sure you are still getting these errors.

Mar 05, 2017 | 1995 Chevrolet Blazer

1 Answer

P0122 p0405

Code 122 is for a low signal from the TPS, and code 405 is for a low signal from the EGR position sensor. The computer sends a 9 volt signal to most of the sensors and the return signal tells the computer what is happening.
For example, if most of the 9 volt signal comes back from the TPS the computer knows the throttle is closed.
I would check the two circuits to see if the reference voltage is there. If it is not, it could be a problem in the harness, or inside the computer.

May 13, 2013 | 1998 Cadillac DeVille

1 Answer

I'm working on a friends 95 ford windstar lx check

Could be a head gasket issue, did all of the old plugs look similar in color?
I would try a leak down , or compression test, along with a coolant pressure test.

Dec 01, 2011 | 1995 Ford Windstar

1 Answer

1987 mercury cougar 5.0. When the engine is started cold, it stalls after 30 seconds. To keep it running, you have to rev the engine until it is warmed up. While reving the engine, it feels like it misses...

plug the EGR line and see how it acts. better yet put a ball bearing in that line and reconnect it to the EGR and see if it goes away. definate vacuum issue somewhere. tranny modulator, check every line coming off the firewall manifold. the throttle position sensor might need to be replaced. its one of the only moving sensors under there. on my 89 tempo I could adjust my idle, move that idle screw around so it idles up a bit to get it out of that dead area on the TPS. plug wires after that. those notchbacks are getting extremely rare, and with a V8! put it far far away....


Mar 20, 2011 | 1987 Mercury Cougar

1 Answer

I have a 95 s10 4.3 which starts nd runs fines

spider injection is a common problem with these vehicles, is it consuming gas more than usual, is the oil smelling like gas? The spider is located under the upper intake plenem. There is also a fuel pressure regulator connected to the spider assembly that may be faulty.

Dec 31, 2009 | 2000 Chevrolet S-10

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