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Chrysler Imperial Fuel Injection Idle Air Control Valves

Chrysler Imperial Fuel injection idle air control valves

Starting at $91.95, AutoBuffy stocks 1 fuel injection idle air control valves from Delphi. The IAC valve regulates how much air bypasses the throttle plate at idle, keeping engine speed steady when cold or under electrical load. A failing IAC causes rough, erratic, or stalling idle that won't self-correct.

Signs your Chrysler Imperial needs a new idle air control valve

  • Engine stalls or nearly stalls when coming to a stop, especially when the transmission is put into Drive or Reverse
  • Idle speed surges up and down rhythmically — often called 'hunting' — instead of holding a steady RPM
  • Cold-start idle is extremely low or the engine dies immediately after starting before it warms up
  • RPMs spike unusually high at startup, sometimes to 2,000–3,000, then refuse to settle
  • Check Engine light is on with stored codes related to idle control or mass airflow (e.g., P0505, P0506, P0507)
  • Idle quality is normal at highway speed but deteriorates or stalls the moment accessories like A/C or headlights are switched on

Which idle air control valve should you buy for your Chrysler Imperial?

IAC valves vary mainly by build quality and whether the unit is OEM-equivalent or a direct OEM replacement from the original supplier. The biggest decision is matching the connector type and thread pitch exactly to your Chrysler Imperial's throttle body — a close-but-wrong fit will cause immediate idle problems. Remanufactured units are a legitimate middle ground when budget matters, provided they carry a warranty.

OEM Supplier (e.g., Hitachi, Bosch, Delphi branded for your Chrysler)
Best for
Owners who want factory-spec performance and longevity
What you get
Exact fit, OEM-matched pintle travel and coil resistance, longest service life
Premium Aftermarket (e.g., Standard Motor Products, BWD)
Best for
Daily drivers needing reliable quality without dealer pricing
What you get
OEM-equivalent tolerances, full connector and gasket included, solid warranty
Remanufactured / Recon Unit
Best for
Budget-conscious owners on older high-mileage {vehicles}
What you get
Cleaned and rebuilt original core, lower price, verify warranty length before buying
Economy / Value Aftermarket
Best for
Short-term fix or fleet vehicles with limited budget
What you get
Lowest upfront cost, higher variability in pintle calibration, shorter expected service life

Fuel injection idle air control valves brands we stock for your Chrysler Imperial

Delphi
1 option · from $91.95

Replacing the idle air control valve on a Chrysler Imperial

Easy⏱ 30–60 minutesFlathead and Phillips screwdriversSocket set with extensionsThrottle body cleanerClean ragsOBD-II scanner (for clearing codes and verifying idle relearn)

With the engine cold, unplug the IAC electrical connector, remove the mounting screws (typically two to four), and pull the valve straight out of the throttle body. Clean the mounting bore and mating surface before seating the new valve with a fresh gasket or O-ring — never overtighten the screws into the aluminum bore. After installation, perform the manufacturer's idle relearn procedure and clear any stored codes before your test drive.

Frequently asked questions

How much does it cost to replace fuel injection idle air control valves on a Chrysler Imperial?
Parts start at $91.95 at AutoBuffy. A shop will add roughly one to two hours of labor on top of the part cost. Doing it yourself keeps the total close to the part price alone, making this one of the more affordable driveability repairs on a Chrysler Imperial.
Can I clean my Chrysler Imperial's IAC valve instead of replacing it?
Cleaning with throttle body cleaner sometimes restores function when the valve is gummed up but mechanically sound. Remove the valve, spray the pintle and bore, and cycle it by hand. If idle problems return within a few weeks or the pintle is worn or sticking, cleaning is only a short-term fix and replacement is the correct repair.
How do I know if the IAC valve or the throttle body itself is the problem on my Chrysler Imperial?
Unplug the IAC connector with the engine idling. If idle quality changes noticeably the valve is active and the circuit is live — focus diagnostics there. If nothing changes, check for carbon buildup on the throttle plate and bore first. A scanner showing live idle air counts sitting at maximum or minimum also points directly to a failed IAC.
Will a bad IAC valve on a Chrysler Imperial throw a Check Engine light?
Yes, but not always immediately. The ECM monitors idle speed against a target range and will log codes such as P0505 (idle control system malfunction), P0506 (idle speed low), or P0507 (idle speed high) when deviation is persistent. Some {vehicles} will show the light only after multiple drive cycles confirm the fault.
Does the IAC valve need to be programmed or reset after replacement on a Chrysler Imperial?
Most {vehicles} require an idle relearn procedure after IAC replacement — not a dealership flash, but a specific key-on, engine-warm, no-load idle cycle that lets the ECM recalibrate its idle tables. The procedure varies by Chrysler; check the service manual or the replacement part's instruction sheet before declaring the repair complete.
How long does an idle air control valve typically last on a Chrysler Imperial?
IAC valves on most {vehicles} last many years under normal conditions, but lifespan shortens with infrequent oil changes (blow-by deposits coat the pintle), high-ethanol fuel, or coolant leaks near the throttle body. Carbon buildup is the leading cause of early failure rather than electrical coil burnout, so clean air and fuel quality matter.

Shop fuel injection idle air control valves by year for the Chrysler Imperial

199319921991

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