Question about 2001 Acura 3.2CL

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2001 Acura 3.2 CL Type-S TPS and Map sensor issues...

My check engine light came on, so I went to AutoZone to get the codes read from the computer. The codes basically said that the MAP was higher than expected, and that the TPS was faulty (P1129 & P0122). I scoured the net, and found a buch of conflicting advice on replacing the parts separately, or just replacing the entire throttle body. Does the MAP sensor come as a a part of the throttle body, or is it a separate entity within itself? Basically, will replacing the throttle body take care of BOTH the map and tp sensors?

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  • Slimm1 Apr 24, 2009

    I have to stretch the budget to have this problem corrected. I have all the household bills, and every dollar saved benefits the collective! The $500 I am anticipating paying to replace the throttle body is going to have to come from some money tree; literally!

  • Slimm1 Apr 24, 2009

    I'm going to try this. What about the TPS though? The throttle position sensor also came up when the codes were read.

  • yadayada
    yadayada May 11, 2010

    Sorry to hear that.

  • yadayada
    yadayada May 11, 2010

    why don't u try the premium assistance option? faster response time.

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  • Acura Master
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No need to replace the throttle body , and i think that you make a test before to buy any piece . disconnect the negative battery terminal few minutes, then connnect and start engine again, drive few minutes by observing the engine, if light comes again, replace only map sensor ,good luckl

Posted on Apr 24, 2009

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Does check engine go out at higher speeds? If not, what is the "CODE" (several parts places will read your codes at no cost (AutoZone, Advance Auto, and others). If the light goes out at higher speeds, I would suspect that your electrical radiator fan isn't coming on when needed.

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I have a 2000 Dodge Durango with 128,000 miles. The check engine light has been on and off the past few days. The OBD II code is P0108. What does this mean?


P0108 - MAP (Manifold Absolute Pressure/Barometric Pressure) Circuit High Input
The MAP (Manifold Absolute Pressure) sensor measures engine manifold negative air pressure. It's usually a three wire sensor: a ground wire, a 5 volt reference wire from the PCM (Powertrain Control Module) to the MAP sensor, and a signal wire that informs the PCM of the MAP sensor voltage reading as it changes. The higher the engine vacuum, the lower the voltage reading. The voltage should range between about 1 volt (at idle) to about 5 volts (WOT wide open throttle).

If the PCM sees the voltage reading from the MAP sensor is greater than 5 Volts, or if the voltage reading is higher than what the PCM considers normal under certain circumstances, a P0108 DTC will set.

Contact us if need additional details; good luck.

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My 2004 forenza start good but when i step on gas it dont have power even shut off the intake manifold is dirty in the inside and the scanner give me code p0108 . PLEASE HELP!!!


P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input

What does that mean? The MAP (Manifold Absolute Pressure) sensor measures engine manifold negative air pressure. It's usually a three wire sensor: a ground wire, a 5 volt reference wire from the PCM (Powertrain Control Module) to the MAP sensor, and a signal wire that informs the PCM of the MAP sensor voltage reading as it changes. The higher the engine vacuum, the lower the voltage reading. The voltage should range between about 1 volt (at idle) to about 5 volts (WOT wide open throttle).
If the PCM sees the voltage reading from the MAP sensor is greater than 5 Volts, or if the voltage reading is higher than what the PCM considers normal under certain circumstances, a P0108 DTC will set.

Symptoms Symptoms of a P0108 DTC code may include:
  • MIL (Malfunction Indicator Lamp) will likely be on
  • Engine may run poorly
  • Engine may not run at all
  • Fuel mileage may decrease
  • Presence of black smoke at exhaust
Causes Potential causes of a P0108 code:
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  • Leak in vacuum supply line to MAP sensor
  • Engine vacuum leak
  • Short on signal wire to PCM
  • Short on reference voltage wire from PCM
  • Open in ground circuit to MAP
  • Worn engine causing low vacuum
Possible Solutions A good way to diagnose if the MAP sensor is to blame would be to compare the KOEO (key on engine off) MAP sensor reading on a scan tool with the Barometric pressure reading. They should be the same because they both measure atmospheric pressure.
If the MAP reading is greater than 0.5 volt off of the BARO reading, then replacing the MAP sensor would likely fix the problem. Otherwise, start the engine and observe the MAP reading at idle. It should normally be about 1.5 volts (varies according to altitude).
a. If it is, the problem is likely intermittent. Check all the vacuum hoses for damage and replace as necessary. You can also try wiggle testing the harness and connector to reproduce the problem.
b. If the scan tool MAP reading is more than 4.5 volts, check the actual engine vacuum reading with the engine running. If it is less than 15 or 16 in. Hg, then the PCM is probably not seeing enough vacuum (due to a worn engine, perhaps) for a given operating condition (which causes a higher than normal voltage signal to the PCM) and setting the code. Repair the engine vacuum problem and retest.
c. But, if the actual engine vacuum reading is 16 in. Hg or more, then unplug the MAP sensor. The scan tool MAP reading should indicate that there is no voltage present. Check that the ground from the PCM is intact and also that the MAP sensor connector and terminals are tight. If the connection is good, then replace the map sensor.
d. However if, with KOEO, & the MAP sensor unplugged, the scan tool shows a voltage reading, then there may be a short in the harness to the MAP sensor. Turn the ignition off. At the PCM unplug connector and remove the MAP signal wire from the connector. Re-attach the PCM connector and see if with KOEO, the scan tool MAP reading shows voltage. If it still does, replace the PCM. If not, check for voltage on the signal wire you just removed from the PCM. If there is voltage on the signal wire, find the short in the harness and repair.

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Check Engine Soon light has come on. How do I check for codes?


Take the car to an autozone and they can read the trouble codes stored in the computer.

If you do not want to go to autozone, take the car to a dealership and the codes can be read by a qualified mechanic. the check engine light means a trouble code has been stored in the vehicles computer.

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12 is battery has been disconnected recently, or went dead.
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51 & 21, basically telling you same thing, but I wouldn't jump at changing oxygen sensor first, as a bad M.A.P. sensor can cause a rich mixture, thus oxygen sensor switches to lean to try and compensate. Personally, I'd go with map sensor first, check connections and vacuum lines if all good, replace it, then I'd go to oxygen sensor .

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1 Answer

Can I read the computer on my car with out the check engine light


hey snackdaddy20,

Yes it is true, those parts stores only see active codes because their scan tools are very basic. Now a dealership scan tool can read historic codes as well as active codes.

If it went off i really wouldnt worry about it, but if your really dedicated on wonder what it is then i would take it to your local dealership.

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Engine light coming on and off started knocking


Have you had it checked for codes on the computer, although the check engine light is not on, the car my have some codes stored in the computer.
If you are in the US, I understand that if you take you car to an Auto Zone store they will read off the codes for you, once you have the codes then you can plan a course of action.
Other large auto parts outlets may also provide this service as they want your parts business.

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The MAP sensor also works with other sensors on the Jeep engine, specifically the Throttle Position Sensor (on the throttle body) and Crank Position Sensor (on the transmission bell housing) to control other fuel flow and ignition timing functions.
If you're having problems with the MAP sensor, or are getting a Check Engine light and code for the MAP sensor keep in mind that other problems may cause that error code.
Bad vacuum hoses, vacuum leaks, bad EGR valves, intake manifold leaks, clogged air filter can all affect the MAP. sensor. To know for sure all the other sensors should be checked for correct voltage and perimeters
Also, if you have done any mods to the engine, especially intake, exhaust and ignition mods you may get an error code for the MAP or incorrect reading and a resulting loss in power or increased fuel usage.
The map sensor is easy to change with a couple screws off the Throttle body.. The part the air inters (the air breather). Buy one from the auto parts store if your sure that is the problem and just replace it..There is no adjustments to it...

It really sounds to me that you have a small vacuum leak in a line somewhere.You can try spraying the motor vacuum lines with soapy water with the vehicle running to find a leak. Also listen and feel under the dash for leaks and hissing sounds.
Hope this helps.......

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