Question about 2001 Ford Focus

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2001 ford focus with p0720. has new speed sensor and speedometer still inop.Has power and ground to sensor. wiring good to pcm. I feel reluctor wheel in trans. Focus has 320k on it. for many miles speed would not work at start up than start working., at this time inop. When working radio vol. would change with speed. I am not able to locate speed control module. Loaction supposed to be center firewall. No cruise in this car. Has 2.0 DOHC 5 speed manual trans.

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probably the coil , but have your alternator checked first

Posted on Oct 07, 2008

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psannes
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SOURCE: cant find 2002 ford focus speed sensor

I had a 2001 and the transmission was not shifting correctly that was diagnosed as a speed sensor issue.

There is a speed sensor on the transmission, near the rear.

And there is a speed sensor on one of the front wheel hubs...

Tell me what the problem is?

Posted on Jan 01, 2009

  • 2 Answers

SOURCE: Ford Escort Odometer Not Working

these can also be caused by a bad alternator

Posted on Jan 09, 2009

  • 1 Answer

SOURCE: speedometer, water temp gauge, and

A common problem on the 2003 focus are the electrics, i had a problem recently where the displays where not functioning, i took off the panel, checked the iso connector and before putting it back in i gave it a quick spray with wd40 and it al seemed to work, been in contact with the garage and for a new unit with callibration you are looking about £140 or so with labour and parts

Posted on Jan 27, 2009

harley9701ha
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SOURCE: 2001 FORD FOCUS SHIFTER CABLE SNAPED

You did not need to remove the heater box to replace the cable. There is a hole in the floor the cable passes through.

Posted on Nov 16, 2009

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2000. What are the probable causes for DTC P0720?


the output speed sensor is not at fault; check the fluid level in the transmission. If that won't help, the transmission is bad.

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I believe that's a Speed Sensor issue.

Diag:
1. Ensure mainshaft and countershaft speed sensors are installed properly. Disconnect mainshaft speed sensor harness connector. Using a DVOM, measure resistance between sensor terminals.

2. If resistance is not 400-600 ohms, replace mainshaft speed sensor. If resistance is 400-600 ohms, disconnect 25-pin PCM harness connector "B". Check for continuity between ground and 25-pin PCM harness connector "B", terminals No. 15 (Red wire) and No. 14 (White wire).

3. If continuity is present, repair short to ground in Red or White wire between PCM and mainshaft speed sensor. If continuity is not present, reconnect mainshaft speed sensor harness connector. Measure resistance between 25-pin PCM harness connector "B", terminals No. 15 (Red wire) and No. 14 (White wire).

4. If resistance is not 400-600 ohms, go to next step. If resistance is 400-600 ohms, go to DTC
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5. Disconnect mainshaft speed sensor harness connector. Check Red wire for continuity between 25-pin PCM harness connector "B", terminal No. 15 and mainshaft speed sensor harness connector. If continuity is present, go to next step. If continuity is not present, repair open in Red wire between 25-pin PCM harness connector and mainshaft speed sensor
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6. Check White wire for continuity between 25-pin PCM harness connector "B", terminal No. 14 and mainshaft speed sensor harness connector. If continuity is present, check for loose PCM harness connectors. Replace PCM with a known-good unit if necessary. If continuity is not present, repair open in White wire between 25-pin PCM harness connector and mainshaft speed sensor harness connector.

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1 Answer

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Speed Sensor probably. Try:
1. Ensure mainshaft and countershaft speed sensors are installed properly. Disconnect mainshaft speed sensor harness connector. Using a DVOM, measure resistance between sensor terminals.

2. If resistance is not 400-600 ohms, replace mainshaft speed sensor. If resistance is 400-600 ohms, disconnect 25-pin PCM harness connector "B". Check for continuity between ground and 25-pin PCM harness connector "B", terminals No. 15 (Red wire) and No. 14 (White wire).

3. If continuity is present, repair short to ground in Red or White wire between PCM and mainshaft speed sensor. If continuity is not present, reconnect mainshaft speed sensor harness connector. Measure resistance between 25-pin PCM harness connector "B", terminals No. 15 (Red wire) and No. 14 (White wire).

4. If resistance is not 400-600 ohms, go to next step. If resistance is 400-600 ohms, go to DTC
P0720 (FLASH CODE 9) . Check for loose PCM harness connectors. Replace PCM with a
known-good unit if necessary.

5. Disconnect mainshaft speed sensor harness connector. Check Red wire for continuity between 25-pin PCM harness connector "B", terminal No. 15 and mainshaft speed sensor harness connector. If continuity is present, go to next step. If continuity is not present, repair open in Red wire between 25-pin PCM harness connector and mainshaft speed sensor
harness connector.

6. Check White wire for continuity between 25-pin PCM harness connector "B", terminal No. 14 and mainshaft speed sensor harness connector. If continuity is present, check for loose PCM harness connectors. Replace PCM with a known-good unit if necessary. If continuity is not present, repair open in White wire between 25-pin PCM harness connector and mainshaft speed sensor harness connector.

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