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Paige Norton Posted on Mar 14, 2015
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I have 2000 mustang 3.8 n it shakes really bad n code p1633 comes back. Whats wrong n how do i fix it

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Jeff Armer

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  • Ford Master 15,575 Answers
  • Posted on Mar 14, 2015
Jeff Armer
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Hello Paige ! It sounds like you have a sick vehicle , lets see if I can help you fix it . Well the code you have has to do with lack of voltage to the ECM -engine control module.
P1633 - Keep Alive Power Voltage Too Low Indicates that the Keep Alive Power (KAPWR) circuit has experienced a power interrupt.

  • Open KAPWR circuit
  • Damaged PCM
  • Intermittent KAPWR Circuit
2000 PCED On Board Diagnostics II SECTION 5: Pinpoint Tests Procedure revision date: 01/31/2001 QB: Diagnostic Trouble Code (DTC) P0603/P1605/P1633 > QB: Introduction QB1 CHECK BATTERY TERMINALS
    Note: If KAPWR is interrupted to the PCM (that is, when a breakout box is installed or the battery is disconnected), DTC P0603/P1605 can be generated on the first power-up.
  • Inspect the battery cables for loose connections, corrosion.
Are the battery terminal connections in good condition? Yes No KEY OFF. Battery terminals are OK. GO to QB2 . REPAIR battery terminals as necessary. QB2 INSPECT ENGINE COMPARTMENT FOR PROPER WIRE ROUTING
  • Inspect Electronic Engine Control (EC) System wiring for proximity to ignition components or wires.
Is wiring too close to ignition components or wires? Yes No REROUTE as necessary. Engine compartment wire routing is OK. GO to QB3 . QB3 CHECK KEEP ALIVE POWER (KAPWR) TO PCM
    Note: Refer to the PCM connector pin numbers in the beginning of this pinpoint test.
  • Disconnect PCM.
  • Measure voltage between KAPWR circuit at the PCM harness connector and ground.
  • While observing digital multimeter, grasp the Electronic EC harness and wiggle, shake or bend a small section while working from the PCM to the dash panel.
Does the voltage reading indicate less than 10.5 volts? Yes No ISOLATE and REPAIR open circuit. No open in KAPWR harness circuit detected. GO to QB4 . QB4 CHECK FOR REPEAT OF DTC P0603/P1605/P1633
  • Reconnect PCM.
  • Start engine and allow it to reach operating temperature.
  • Run Key On Engine Off Self-Test.
  • Retrieve Continuous Memory DTCs.
Is DTC P0603, P1605 or P1633 present? Yes No REPLACE the PCM. REPAIR other DTCs as necessary. If none, testing is complete. You may want to take this to the repair shop , do you own a volt ohm meter ? Do you know how to use one ?

5 Related Answers

Anonymous

  • 962 Answers
  • Posted on Nov 30, 2008

SOURCE: 2000 lincoln ls i got a trouble code p1633 (KAM)voltage to low

P1633 means KAM (Keep Alive Memory ) Voltage too low. the KAM is caused by low battery voltage and you replace the battery.When you replace the battery the KAM loses Memory and the problems resulting in what you are experiencing now.When replacing a new battery, reconnect the Positive cable first.And use a trickle battery charger set low to the cables before disconnectng the battery . this will keep the voltage to the ECM powered with enough voltage. All you can do now is make the computer relearn the way it should run. Disconnect the negative cable from the battery, wait a while 20 seconds or so. then reconnect the cable. I do not know if this is a temporary fix or not but it should re-program the computer.

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Anonymous

  • 1865 Answers
  • Posted on Jun 18, 2009

SOURCE: 2000 Ford Windstar failed inspection for emission.

The code is "Keep Alive Power Voltage Too Low" perhaps you can find something in chilton's regarding this error. Appears to be a communication error

Anonymous

  • 92 Answers
  • Posted on Apr 04, 2010

SOURCE: 2001 for tarous code p1633 what does that mean

P1633 means KAM (keep alive memory) power is low. The power that goes to the vehicles computer to hold its memory when the key is off has lost its power. I would start by checking fuses in the fuse panel in the engine compartment(near the radiator support). If the fuses are all good then I would test for power at the computer connector which is also in the engine compartment behind the engine. I don't have the pin number or wire color at the moment (I apologize) since the Ford website is down at the moment. I have repaired this problem in the past by installing another power wire to feed the circuit essentially bypassing the original circuit.
Hope this helps

Anonymous

  • 31 Answers
  • Posted on May 22, 2010

SOURCE: p1414 code on 2000 v6 mustang

"DTC P1414 indicates electric AIR pump commanded off, but PCM indicates electric AIR pump is on."

"Possible Causes:
-- Open EAIR circuit.
-- Open AIR pump ground.
-- EAIR circuit short to power.
-- Damaged AIR pump.
-- Damaged solid state relay.
-- Damaged PCM."

That's from the service manual. Between you and me? They EAIR system is a POS. In my day, I've wrestled this Ford demon several times. We're talking about emissions on a computer-controlled car, here. Sadly, there's generally no easy fix. Get it to a (not a scan tool) diagnostic tool.

Narseman

  • 1088 Answers
  • Posted on May 07, 2011

SOURCE: my 1997 expedition, shakes really

Take a close look at the tires, look for bulges and lumps. You may have a slipped belt. Where the rubber delaminates from the reinforcment belt embedded in the tire. If this is the case, you must replace the tire. Also look for missing balance weights. Around the rim you should be able to tell if a weight fell off.
Another very serious possibility is a failed shock absorber. A very rough test is to manually push / bounce one corner of truck down a few times then let go and see if it keeps bouncing more than one time, one and half max. Check all 4 corners.
Otherwise, possible bent rim, missing lug nuts, bad wheel bearing.
Good luck

Testimonial: "I switched tires from front to back and wala no shake. I couldnt believe it considering how bad the shake was thanks"

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2001 ford Taurus code P1633 what does it mean and how do I fix it ?

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Indicates that the Keep Alive Power (KAPWR) circuit has experienced a power interrupt.

Possible causes:
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