Ford Cam Sensor Tips
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View Ford Cam Sensor Tips as PDF for free.
More details
- Words: 737
- Pages: 4
Cam Sensors on Fords
[RICHARD MCCUISTIAN – ASKAMECHANIC.INFO]
Cam Sensor Adjustments
Ford Cam Sensor Tips What we need to know about injector timing. Some cam sensors are adjustable. Some aren’t A maladjusted cam sensor can produce some weird problems. If the injector delivers its fuel too early or too late, all sorts of surges, stumbles, and starting problems can result. So how does the average mechanic set the cam sensor without special tools? Remember, on late model Fords, the signal is supposed to be delivered exactly 24 degrees AFTER TDC, and adjust the sensor accordingly. According to Ford’s program, the PCM needs to know when the fire has gone out from the previous burn to begin timing the next fuel spray.
3.8L Cam vane 2 (Windstar): Here's the Windstar synchronizer in place without and with the tool installed (lower left inset) and the engine at TDC. Notice that the vane is always to the left of the connector when the synchronizer is in the proper position.
Cam Sensors on Fords
[RICHARD MCCUISTIAN – ASKAMECHANIC.INFO]
Synchro Tool 2: This is the tool for 4.2L engines. When using the tool, the specs generally call for the engine to be at TDC compression stroke on #1, but how do you set it up when you don't have the tool? Well, I measure the distance from zero to 24 degrees BTDC, cut a piece of masking tape using that measurement, then apply the tape to the ATDC side of zero. Presto! Now you have a mark. In many cases, the deep notch on the balancer (if there is one) is found at 24 ATDC. Use the edge of the notch closest to zero for your mark. In most cases the measurement will be from 31 to 34 mm, depending on the diameter of the balancer, but make sure you get it right!
3.8L Timing Mark. Here's a balancer with the tape in place, providing the 24 ATDC mark. Note the presence of the deep notch. On the 4.2L balancer, a piece of tape 32 mm long puts you at 24 ATC. For 3.0L engines, the tape should be 31 mm, and on most 3.8L engines, 25 mm does the job (this spec could be different for Mustang and
Cam Sensors on Fords
[RICHARD MCCUISTIAN – ASKAMECHANIC.INFO]
Windstar, so be careful!. It’s best to measure for yourself, but these are a few measurements I came up with in our shop. A math whiz can figure it out on a calculator using the diameter of the pulley. Cam timing 1: Without the special tool you can attach a logic probe or a volt meter to the signal wire (the wire in the center on the Cam Sensor connector), mark 24 degrees after TDC on the balancer (I did this one with whiteout) and turn the engine slowly to your mark. Now turn the cam sensor synchronizer the way you would a distributor until you find the point where the signal switches. Old timers will remember setting ignition timing this way when we still] had contact points... Notice where the white balancer mark is in the inset photo. On this one I’m checking the Cam sensor alignment by moving the crankshaft. If I was adjusting it I would put the mark (which is at 24 ATDC) at the pointer and find the switch point by moving the Cam Sensor.
3.0L Good and bad: Watch for the magnet to fall out of the sensor on 97/up 3.0L Tauruses (see right hand sensor in inset photo). If you get a P0340 code on one of these, this is the first place to look. The rotten part is that about six times out often the synchronizer is destroyed by the magnet and has to be replaced. On the one pictured, we got lucky. And if you know how to adjust the synchronizer after you've replaced it, you're home free. If the synch is okay, just bolt the sensor on and let it go.
Cam Sensors on Fords
[RICHARD MCCUISTIAN – ASKAMECHANIC.INFO]
Jeep Cam sensor 2: On this 99 model 4.OL Grand Cherokee, the Mopar men set things up so that you could set the synchronizer with a toothpick! The hole in the housing lines up with the hole in the vane. Lock 'er down and you're set. As with Ford's procedure using their confusing array of tools, #1 TDC compression is your reference point on the Jeep.
[RICHARD MCCUISTIAN – ASKAMECHANIC.INFO]
Cam Sensor Adjustments
Ford Cam Sensor Tips What we need to know about injector timing. Some cam sensors are adjustable. Some aren’t A maladjusted cam sensor can produce some weird problems. If the injector delivers its fuel too early or too late, all sorts of surges, stumbles, and starting problems can result. So how does the average mechanic set the cam sensor without special tools? Remember, on late model Fords, the signal is supposed to be delivered exactly 24 degrees AFTER TDC, and adjust the sensor accordingly. According to Ford’s program, the PCM needs to know when the fire has gone out from the previous burn to begin timing the next fuel spray.
3.8L Cam vane 2 (Windstar): Here's the Windstar synchronizer in place without and with the tool installed (lower left inset) and the engine at TDC. Notice that the vane is always to the left of the connector when the synchronizer is in the proper position.
Cam Sensors on Fords
[RICHARD MCCUISTIAN – ASKAMECHANIC.INFO]
Synchro Tool 2: This is the tool for 4.2L engines. When using the tool, the specs generally call for the engine to be at TDC compression stroke on #1, but how do you set it up when you don't have the tool? Well, I measure the distance from zero to 24 degrees BTDC, cut a piece of masking tape using that measurement, then apply the tape to the ATDC side of zero. Presto! Now you have a mark. In many cases, the deep notch on the balancer (if there is one) is found at 24 ATDC. Use the edge of the notch closest to zero for your mark. In most cases the measurement will be from 31 to 34 mm, depending on the diameter of the balancer, but make sure you get it right!
3.8L Timing Mark. Here's a balancer with the tape in place, providing the 24 ATDC mark. Note the presence of the deep notch. On the 4.2L balancer, a piece of tape 32 mm long puts you at 24 ATC. For 3.0L engines, the tape should be 31 mm, and on most 3.8L engines, 25 mm does the job (this spec could be different for Mustang and
Cam Sensors on Fords
[RICHARD MCCUISTIAN – ASKAMECHANIC.INFO]
Windstar, so be careful!. It’s best to measure for yourself, but these are a few measurements I came up with in our shop. A math whiz can figure it out on a calculator using the diameter of the pulley. Cam timing 1: Without the special tool you can attach a logic probe or a volt meter to the signal wire (the wire in the center on the Cam Sensor connector), mark 24 degrees after TDC on the balancer (I did this one with whiteout) and turn the engine slowly to your mark. Now turn the cam sensor synchronizer the way you would a distributor until you find the point where the signal switches. Old timers will remember setting ignition timing this way when we still] had contact points... Notice where the white balancer mark is in the inset photo. On this one I’m checking the Cam sensor alignment by moving the crankshaft. If I was adjusting it I would put the mark (which is at 24 ATDC) at the pointer and find the switch point by moving the Cam Sensor.
3.0L Good and bad: Watch for the magnet to fall out of the sensor on 97/up 3.0L Tauruses (see right hand sensor in inset photo). If you get a P0340 code on one of these, this is the first place to look. The rotten part is that about six times out often the synchronizer is destroyed by the magnet and has to be replaced. On the one pictured, we got lucky. And if you know how to adjust the synchronizer after you've replaced it, you're home free. If the synch is okay, just bolt the sensor on and let it go.
Cam Sensors on Fords
[RICHARD MCCUISTIAN – ASKAMECHANIC.INFO]
Jeep Cam sensor 2: On this 99 model 4.OL Grand Cherokee, the Mopar men set things up so that you could set the synchronizer with a toothpick! The hole in the housing lines up with the hole in the vane. Lock 'er down and you're set. As with Ford's procedure using their confusing array of tools, #1 TDC compression is your reference point on the Jeep.
