The 4 Vacuum Solenoids
09-18-09, 05:44 AM
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The 4 Vacuum Solenoids
Hello All,
From left to right (and I apologize if I don't get the picture uploaded but I think the description might be enough) the (4) solenoids on the driver's side of the plenum (Blue, Yellow in the forefront, and then White, Orange in the rear towards the firewall)...I'm looking for the description of what each of these controls and specifically which one controls the vacuum to the EGR valve.
I suspect the Blue solenoid (left-most forefront) has a cracked nipple facing toward the middle line of the engine. Are these solenoids available? Can I substitute one for another? And, if not, is there a supplier, or do I have to find one in a salvage yard or do my homework and fabricate the equivalent?? ...yet another "small" project. Thanks in advance for all the information,
Jeff
From left to right (and I apologize if I don't get the picture uploaded but I think the description might be enough) the (4) solenoids on the driver's side of the plenum (Blue, Yellow in the forefront, and then White, Orange in the rear towards the firewall)...I'm looking for the description of what each of these controls and specifically which one controls the vacuum to the EGR valve.
I suspect the Blue solenoid (left-most forefront) has a cracked nipple facing toward the middle line of the engine. Are these solenoids available? Can I substitute one for another? And, if not, is there a supplier, or do I have to find one in a salvage yard or do my homework and fabricate the equivalent?? ...yet another "small" project. Thanks in advance for all the information,
Jeff
09-18-09, 06:38 AM
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All the solenoids are the same part number.
Some solenoids are CONFIGURED differently. Look at the small filter on them. See how the filter is located differently on some vs the others. The filter pulls straight off, so you can relocate it to another nipple on the solenoid. See the Fuel and Emissions section of the FSM for how each is configured. The FSM download is located in the FAQ thread of this site.
Blue is Relief solenoid. Grey is Switching solenoid. Yellow is EGR. Orange is FPR. The color is of the elect plug.
Some solenoids are CONFIGURED differently. Look at the small filter on them. See how the filter is located differently on some vs the others. The filter pulls straight off, so you can relocate it to another nipple on the solenoid. See the Fuel and Emissions section of the FSM for how each is configured. The FSM download is located in the FAQ thread of this site.
Blue is Relief solenoid. Grey is Switching solenoid. Yellow is EGR. Orange is FPR. The color is of the elect plug.
09-18-09, 12:13 PM
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I do believe then that the Relief solenoid (blue connector) has a cracked nipple. Do you know what the functionality of this solenoid is? I guess specifically I'm wondering what this problem would affect. Also, where I might purchase one...if available?
Jeff
Jeff
09-18-09, 01:12 PM
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Controls the vacuum to the ACV when commanded by the ECU. The ACV determines where the airpump air goes at a given time.
I recommend swapping that solenoid with the USELESS EGR solenoid. Then cap off the vacuum lines that are at the EGR solenoid to prevent an air leak.
Free FSM online in the FAQ thread.
I recommend swapping that solenoid with the USELESS EGR solenoid. Then cap off the vacuum lines that are at the EGR solenoid to prevent an air leak.
Free FSM online in the FAQ thread.
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