BMW 735i 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 BMW 735i Cold Start Injector Replacement is $106 with $11 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1990 BMW 735iL6-3.5LService typeCold Start Injector ReplacementEstimate$136.55Shop/Dealer Price$159.44 - $188.74
1988 BMW 735iL6-3.5LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$139.47 - $168.79
1991 BMW 735iL6-3.5LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$139.47 - $168.79
1985 BMW 735iL6-3.5LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$139.43 - $168.72
1989 BMW 735iL6-3.5LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$139.50 - $168.84
1992 BMW 735iL6-3.5LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$139.47 - $168.79
1987 BMW 735iL6-3.5LService typeCold Start Injector ReplacementEstimate$121.55Shop/Dealer Price$144.23 - $173.37
1986 BMW 735iL6-3.5LService typeCold Start Injector ReplacementEstimate$121.55Shop/Dealer Price$144.89 - $174.51
Show example BMW 735i 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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Chris

22 years of experience
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Chris
22 years of experience
BMW 735i L6-3.5L - Brake Master Cylinder - San Juan Capistrano, California
Chris was punctual and professional. Very efficient and knowledgeable. Work was done in the manner that I expected. Good mechanic...

Jonathan

35 years of experience
489 reviews
Jonathan
35 years of experience
BMW 330Ci L6-3.0L - Smoke from engine or exhaust - Port Richey, Florida
I can’t believe how patient Jonathan was when I started “grilling” him. He was knowledgeable & thorough.

Bryant

12 years of experience
622 reviews
Bryant
12 years of experience
BMW 740Li L6-3.0L Turbo - Serpentine/Drive Belt - Fishers, Indiana
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Harish

27 years of experience
588 reviews
Harish
27 years of experience
BMW 550i V8-4.8L - Radiator Flush - Charlotte, North Carolina
Does excellent work and always prompt and friendly. Harish is always my first choice BMW mechanic.

Excellent Rating

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Rating Summary
6,369
206
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148
6,369
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148
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