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Ford 5.0L/5.8L EFI Air Throttle Body Assembly Diagram - TPS & Air Bypass Valve
Service manual page listing air throttle body assembly features alongside a labeled drawing of the throttle body, TPS, and canister purge ports.
This manual page describes and illustrates the air throttle body assembly used on Ford 5.0L and 5.8L EFI engines. The text lists three additional features of the assembly: a preset stop that locates the wide-open throttle (WOT) position, a throttle body mounted throttle position sensor, and canister purge port(s) for evaporative emission control — two ports on the 5.0L engine and one on the 5.8L engine. Below the text is a labeled line drawing titled 'AIR THROTTLE BODY ASSEMBLY' showing the twin-bore throttle body from an angled view. The diagram identifies four components with callout arrows: the throttle plate set screw, the air bypass valve idle speed control, the throttle position sensor (with its wiring pigtail shown), and the canister purge ports (as configured on the 5.0L). The figure carries the reference number V8035-1A. A reader can learn where the throttle position sensor, idle air bypass valve, and canister purge ports are physically located on the throttle body, which is useful for diagnosing idle, throttle position, or evaporative emissions issues. The page was uploaded as part of a 1990 Ford Bronco emissions documentation set.
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Frequently asked questions
- How many canister purge ports are on the 5.0L throttle body versus the 5.8L?
- The document states there are two canister purge ports on the 5.0L and one on the 5.8L, used for evaporative emission control.
- Where is the throttle position sensor located?
- It is mounted on the throttle body; the diagram shows it on the side of the air throttle body assembly with a wiring pigtail.
- What controls idle speed on this throttle body?
- The diagram labels an air bypass valve idle speed control mounted on the throttle body assembly.
- How is the wide-open throttle (WOT) position located?
- The assembly includes a preset stop to locate the WOT position, and the diagram also shows a throttle plate set screw.
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