Q: Can the secondary air injection relay cause my transmission to randomly not perform as it should?

asked by on September 26, 2017

I got a used transmission for my mustang and got a 6 month warranty on it. Since it got done I've taken the car back 2 times for tranny leak and 3 times because it randomly won't shift and the rpms will come down very slowly and to fix it I turn the car off and on. They said they replaced the transmission but refused to give me another 6 month warranty on the "new" transmission.The last time i took it in to the same shop they said they had it tested and that my problem is something with the secondary air injection relay. Would that effect my transmission to act like that?

My car has 80349 miles.
My car has an automatic transmission.

The previous issues that you’ve had with the transmission it is possible and very likely that the transmission itself is still the cause of this issue and the shop that installed it is trying to avoid any liability. Unfortunately in cases like this when they are not Cooperative sometimes legal action is necessary. The secondary air injection system has to do with the amount of air that is entering the engine. This typically would have nothing to do with the transmission performance.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Why does my Tahoe start with the fuel pump relay pulled out or left in?

Hi there. Check to see what relay you have pulled. If indeed you removed the fuel pump relay and the engine still starts up, then check the oil pressure switch. An oil pressure switch will kept the engine running as...

Car suffering a loss in power

If the issue seems to be in time with the crank pulley, then it may be a timing issue. This engine tends to have a history of misfire issues, typically from bad coils. I typically start by scanning the computer...

Are crankshaft pulleys and harmonic balancers the same thing? I have a 1998 Buick Century custom and it is wobbling and making a loud noise.

Hi, thanks for writing in. On your vehicle, the pulley is actually manufactured into the harmonic balancer. If the pulley is wobbling, it would be best to have a certified mechanic, like those available at YourMechanic.com, take a look at...

Truck every once in awhile will hesitate when hit brakes real quick and get back on gas

When you hit the brakes real quick, this means you closed the throttle real quick. When this happens you may have excessive fuel in the engine and the computer shut off the injectors. When you open the throttle back up,...

Car stalls, rpms go up, & no power

Hello. This can be caused by a number of things. I usually start by scanning the computer for codes. This will give me an indication of anything the computer is seeing. If it is not seeing anything, then it may...

I changed my TPS because of bad idle, now it stalls when I come to a stop after exceeding 50mph. What's the problem?

Hello, It sounds like you may have a faulty MAP sensor that may be creating an adverse signal to the change in engine load. The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional...

A whole created by rust on the rear beam axle of my VW MK4 Golf GTI. Should I get it welded or buy a new rear beam axle?

I would suggest replacing the axle beam. As you may know, rust acts a bit like a cancerous contaminant to metal and is very difficult to remove entirely once it sets in. As the Iron oxide forms when the iron...

How do I adjust the steering wheel?

The steering wheel can be adjusted so that it is in the optimal position for you. To adjust the steering wheel, push the Steering Wheel lever (located under the steering wheel) down, until it locks into place. Then adjust the...

How do you use the keyless entry pad to activate/deactivate the Auto Lock feature?

While you can use the message center in your car, or the door lock switch itself to activate or deactivate the Auto Lock feature, you can also use the keyless entry pad on the outside of the driver door if...

Related articles

The Best Used Cars to Buy If You Have 3 or More Kids
If If you have three or more kids, you could probably get by with a mid-size sedan if all you want to do is take them from Point A to Point B. Realistically, though, having kids means music lessons, athletics,...
2012 Chevrolet Malibu vs. 2012 Ford Fusion: Which One Should I Buy?
When you want a midsize sedan, you’re looking for something that will offer you the best fuel economy for the size as well as additional safety features that will keep your family safe while you’re driving across town or around...
A Buyer’s Guide to the 2012 Ford Fusion Hybrid
The The 2012 Ford Fusion Hybrid is a really great choice for anyone looking for a mid-size sedan. Not only does it boast plenty of room for people and cargo, but it also has a good amount of power and...