85 E150 Feedback Carb
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85 E150 Feedback Carb
I have an 85 E150 Clubwagon that has been diagnosed with a bad feedback carburetor by a Ford Dealership. Service Manager tells me the carburetor is no longer available through Ford. He said I would need to purchase a rebuilt unit through a remanufacturer at a cost of about $650. He also told me that they do not install rebuilt carboretors due to their high failure rate. If I did have them install it I would have to pay labor (approx $150 )again if the rebuilt carburetor was bad. Any suggestions on a source of a good carburetor or an after market conversion to throttle Body FI. This has been a trouble free van for 100,000 miles, this is its only service outside of normal maintainence. Thanks!
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From: Marshalltown, IA
85 E150 Feedback Carb
I have a feedback carb off my 85 f150 (300) I'd be willing to sell cheap if you are interested. Not sure if it is the same as what you're looking for, but I bought it remanufactured about 6 months ago, only about 5k miles on it, still works great. I didn't pay close to what he quoted you at, and I put it on myself, wasn't hard really. Then again we could be talking about 2 different carbs, I don't know. Let me know if interested.
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85 E150 Feedback Carb
Thanks for your offer. I left out that the engine is a 302. I suspect it is a different carb than a 300 . I'm no mechanic by a long shot but I do try what I think are simple things myself. Again Thanks!
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85 E150 Feedback Carb
Ed, is your carburetor the Motorcraft 7700 variable-venturi? Holly made a replacement for that carb, though it too is now discontinued. The Holly rebuilds are $400 through NAPA.
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85 E150 Feedback Carb
Edb, I have a new (nos) Ford 1bbl feedback carb.; Ford # E5TZ-9510-B (Motorcraft # CA-3502); Carb Tag# E5TE BA A 8 F 20; I don't know if this is a match for your application -you have to do the homework 
...also have a Ford Carter E4TZ-9510-HX...good luck
...also have a Ford Carter E4TZ-9510-HX...good luck
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85 E150 Feedback Carb
Thanks for the feedback guys. I will take time this week end to take enough apart to identify the carb and pull the numbers on the carb tag if it is still there. Any easy way to identify the Motorcraft 7700 variable- venturi carb?
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85 E150 Feedback Carb
Can't say for sure because I have the Holly replacement. Best to try and get the numbers off of your carb for positive ID. There were probably several feedback carburetor's for the small V-8's. A trip to the public library might help too. I've found the Mitchel Manual's to be some of the most helpful. They have photo's of carburetor's and list the engine's they were available on.
Scott
Scott
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85 E150 Feedback Carb
The rain has stopped and I had a chance to get to the carb ID Tag. It is a Motorcraft "E5TE YA" . On the lower part of the tab in small stamping " B 4L 14". To my knowledge all the vacuum lines are original and this thing is a plumbing nightmare. Is there a kit to replace all the Vac lines or am I on my own to obtain what looks to be 5 or more sizes , many special fittings, inline devices (don't know what they are) and what appears to be several small teflon type tubes. This engine has several vac switches operating solenoids over both valve covers. From things I have read through many hours of searching these solenoids are Thermactor Air Diverter valve, Thermactor Air Bypass valve,EGR solenoid and EGR vent solenoid. Where/what is my best source of infomation to explain how this system works? Thanks for your help! I may wish I never tackled this prob!!!
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85 E150 Feedback Carb
This is a quote from the 1981 Mitchell Manual. ISBN 0-8470-0871-1. Check your public library for it. It's the best source for EEC-III that I've been able to find.
Thermactor Air Bypass (TAB): The TAB solenoid valve controls manifold vacuum to the bypass portion of the bypass/diverter valve, which in turn controls whether air from thermoactor pump is bypassed to the atmosphere (solenoid de-energized) or routed to control the diverter valve (solenoid energized).
Thermactor Air Diverter (TAD): The TAD solenoid valve controls manifold vacuum to the diverter portion of the bypass/diverter valve, which in turn controls which direction (upstream or downstream) thermactor air is routed. In the de-energized position, air is routed downstream. In the energized position, air is routed upstream.
The EGR Control Solenoid valve (toward front of engine) opens to put vacuum on the EGR valve, opening it. The EGR Vent Solenoid (toward rear of engine) opens when the Control Solenoid closes to vent off vacuum from EGR valve to close it.
Do you have the sticker for the vacuum routing pasted on the upper radiator support? If not you can find a vacuum diagram at http://www1.autozone.com/ and go to their repair guides. Just be sure and get the right one for the EEC-III distributor. There won't be a vacuum routing to the distributor.
BTW, check the 1985 Mitchell Manual to ID your carburetor.
Scott
Thermactor Air Bypass (TAB): The TAB solenoid valve controls manifold vacuum to the bypass portion of the bypass/diverter valve, which in turn controls whether air from thermoactor pump is bypassed to the atmosphere (solenoid de-energized) or routed to control the diverter valve (solenoid energized).
Thermactor Air Diverter (TAD): The TAD solenoid valve controls manifold vacuum to the diverter portion of the bypass/diverter valve, which in turn controls which direction (upstream or downstream) thermactor air is routed. In the de-energized position, air is routed downstream. In the energized position, air is routed upstream.
The EGR Control Solenoid valve (toward front of engine) opens to put vacuum on the EGR valve, opening it. The EGR Vent Solenoid (toward rear of engine) opens when the Control Solenoid closes to vent off vacuum from EGR valve to close it.
Do you have the sticker for the vacuum routing pasted on the upper radiator support? If not you can find a vacuum diagram at http://www1.autozone.com/ and go to their repair guides. Just be sure and get the right one for the EEC-III distributor. There won't be a vacuum routing to the distributor.
BTW, check the 1985 Mitchell Manual to ID your carburetor.
Scott
Last edited by horsepuller; Aug 12, 2003 at 07:24 PM.
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