BMW 735iL Cold Start Injector Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(6,643)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(6,643)

Cold Start Injector Replacement Service

How much does a Cold Start Injector Replacement cost?

On average, the cost for a BMW 735iL 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 735iLL6-3.5LService typeCold Start Injector ReplacementEstimate$136.55Shop/Dealer Price$159.44 - $188.74
1991 BMW 735iLL6-3.5LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$139.47 - $168.79
1988 BMW 735iLL6-3.5LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$139.47 - $168.79
1992 BMW 735iLL6-3.5LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$139.43 - $168.72
1989 BMW 735iLL6-3.5LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$139.50 - $168.84
Show example BMW 735iL 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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(6,643)

Rating Summary
6,192
205
60
44
142
6,192
205
60
44
142

Raul

34 years of experience
285 reviews
Raul
34 years of experience
BMW 735iL L6-3.5L - Car is overheating - Berkeley, California
One of the best guys in that profession very knowledgeable and quick very smart and business savvy. Wisdom beyond his years. He will be the guy i will want to work for me 24/7 excellent service excellent. Patience, speak truth no bull none at all just straight up guy .Good people..... Love his attitude ... The Best of the Best. Blessings

Jeremiah

22 years of experience
61 reviews
Jeremiah
22 years of experience
BMW 325i L6-2.5L - Radiator Hose - Upper Replacement - Dallas, Texas
After having just being burned by another mobile mechanic two weeks ago, I was very skeptical about this company but Jeremiah put all of my fears at ease with his professionalism and the company as a whole was very professional including the website.

David

36 years of experience
195 reviews
David
36 years of experience
BMW 328i L6-3.0L - Oil Filter Housing Gasket - Pasadena, California
Experience was excellent from start to finish. He explained everything and took pictures and was really thorough. He was also very professional and was top notch. Couldn't have asked for anything better. Thanks YourMechanic!

Jeremy

20 years of experience
603 reviews
Jeremy
20 years of experience
BMW X4 L6-3.0L Turbo - Oil Change - West Palm Beach, Florida
Very knowledgeable and answered all my questions.

Excellent Rating

(6,643)

Rating Summary
6,192
205
60
44
142
6,192
205
60
44
142
Number of BMW services completed
73073+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

Recent articles & questions

Top 10 Scenic Drives in Massachusetts
Massachusetts may be one of the smaller states in the country by land mass, but it is huge on preserved history and natural beauty. The area played a pivotal part in American history from the Pilgrims landing at Plymouth Rock...
P2189 OBD-II Trouble Code: Sys Too Lean at Idle Bank 2
P2189 P2189 trouble code definition The most environmentally friendly and power efficient air-fuel ratio for gasoline engines that we modernly know is 14.7:1. The engine control module (ECM) is programmed to adjust things like fuel delivery and ignition timing if...
How to Prepare for the Maine Driver’s Written Test
If If you are getting ready to become part of the driving community in Maine, the first thing you need to do is pass the driver’s written test so you can get your permit and then take your road test....

AC not coming on

I couldn't find any information on resetting the module. Usually they continually check for faults every key cycle. After a repair it should reset itself. However, I did find that in several cases that the blower motor and the blower...

My key fob doesn't unlock my 2007 Pontiac Grand prix and my obd 2 reader won't connect.

As far as the malfunctioning key fob, it may be time for a new unit. The contacts may be worn out on the circuit board inside the device or the button may be worn and not making enough contact. You...

My car starts but the lights on the dashboard light up and looses all power and the gear shift does not move unless u override and it still does does have ant peer but the car moves

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (844) 997-3624 · hi@yourmechanic.com