Lexus LS400 Cold Start Injector Replacement at your home or office.

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Cold Start Injector Replacement Service

How much does a Cold Start Injector Replacement cost?

On average, the cost for a Lexus LS400 Cold Start Injector Replacement is $448 with $11 for parts and $437 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1991 Lexus LS400V8-4.0LService typeCold Start Injector ReplacementEstimate$891.31Shop/Dealer Price$1062.42 - $1394.57
2000 Lexus LS400V8-4.0LService typeCold Start Injector ReplacementEstimate$458.51Shop/Dealer Price$544.56 - $621.22
1999 Lexus LS400V8-4.0LService typeCold Start Injector ReplacementEstimate$458.51Shop/Dealer Price$544.55 - $621.20
1995 Lexus LS400V8-4.0LService typeCold Start Injector ReplacementEstimate$458.51Shop/Dealer Price$544.37 - $620.88
1998 Lexus LS400V8-4.0LService typeCold Start Injector ReplacementEstimate$458.51Shop/Dealer Price$544.67 - $621.42
1992 Lexus LS400V8-4.0LService typeCold Start Injector ReplacementEstimate$799.31Shop/Dealer Price$970.55 - $1302.80
1997 Lexus LS400V8-4.0LService typeCold Start Injector ReplacementEstimate$481.51Shop/Dealer Price$566.45 - $642.28
1993 Lexus LS400V8-4.0LService typeCold Start Injector ReplacementEstimate$822.31Shop/Dealer Price$995.45 - $1329.13
Show example Lexus LS400 Cold Start Injector Replacement prices

What is the Cold Start Injector all about?

The cold start injector is also known as the cold start valve. The part is located on the cold air intake, which is found on the intake manifold. It is a fuel injector that is controlled electronically. The cold start injector works only when the engine has a cold start, or when the engine’s temperature is below a certain point. When this happens, a computer tells the injector to inject more fuel into the mixture that goes through the cylinders to the engine. The goal is for the engine to have an easier and faster start even when it is cold.

It is important to note that the temperature is referring to that of the engine, not the outside weather. When the cold start injector isn’t working properly, the engine will sound rough and will have trouble idling unless pressure stays on the pedal to increase the amount of fuel that goes into the manifold. The engine may keep dying every time it is started until it warms up enough.

Keep in mind:

  • The cold start injector also helps moderate engine speeds while improving performance and even fuel economy.
  • Another job of the cold start injector is to help control engine idle speed.
  • The cold start injector wires are separate from other injectors and they are often screwed in.
  • The injector can be tested for proper working order.

How it's done:

  • The Cold Start Injector is verified that it needs to be replaced. The electrical connector is then disconnected.
  • The defective Cold Start Injector is unscrewed from the housing and removed.
  • After the new Cold Start Injector is installed and secured into the housing, the fuel line is connected.
  • The electrical connection is then connected and the Cold Start Injector is tested for operation.
  • The vehicle is road tested to ensure proper operation of the Cold Start Injector and checked for leaks.

Our recommendation:

If the engine sounds unusual when idling or if it has trouble starting when it is cold, you should have one of our expert mechanics inspect the cold start injector. The technician can test it with a diagnostic meter to determine the issue.

What common symptoms indicate you may need to replace the Cold Start Injector?

  • Engine won’t start or stalls
  • Engine runs poorly
  • Engine stops when you take your foot off the pedal

How important is this service?

The engine may not start when the cold start injector stops working, so it is important to have it tested before you are stranded.

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Excellent Rating

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139
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Travis

10 years of experience
61 reviews
Travis
10 years of experience
Lexus LS400 V8-4.0L - Steering wheel feels loose - Melrose, Massachusetts
Pleasant and seems to be well informed.

Tien

23 years of experience
903 reviews
Tien
23 years of experience
Lexus LS400 V8-4.0L - Power Seat is not working - Castro Valley, California
Tien was fantastic. He figured out my problem in minutes and gave me additional info regarding other potential problems I need to address. Really glad I found you guys on the net and will be calling in the future. Thanks so much. Bobby

Peter

43 years of experience
1321 reviews
Peter
43 years of experience
Lexus LS400 V8-4.0L - Positive Crankcase Ventilation (PCV) Valve - Chandler, Arizona
Peter has worked on my Lexus LS 6 times. I have one appoInment coming up and the wait to book Peter was 2 weeks. He is simply the best. Like the Mercedes commercial says: the best or nothing. Not only is Peter the best, he is also extremely nice, personable and willing to share his knowledge. A rare find indeed!

Lewis

16 years of experience
118 reviews
Lewis
16 years of experience
Lexus LS400 V8-4.0L - Check Engine Light is on - Dallas, Texas
Fantastic service, I've already recommended the service to friends.

Excellent Rating

(148)

Rating Summary
139
7
1
0
1
139
7
1
0
1
Number of Lexus LS400 services completed
1628+
services done by our mechanics
TOTAL NUMBER OF EXPERT Lexus MECHANICS
1100+
experts on our platform

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