Will check engine light come on if there is any kind of transmission problem?

Question

I noticed a small amount of transmission fluid or brake fluid on the ground under my 99 chevy blazer, but I am not really having a problem with either, would my check engine light come on with either of these IF there was a problem??

Answer 1

Yes a check engine light would come on. Now if a problem is not big enough for a sensor to pick up the Power Train Control Module(PCM) would not set a code for it. Or you could have a faulty senor(s). But either of those too rarely rarely happens. I would still go to the Chevy dealership to have them check it out. Just to make sure. You could have a problem and it might be small now but if you don't do anything about it, it might just become a bigger costly problem. Transmissions and engines cost a lot to rebuild or to replace. I'm guess that a diagnosis fee would cost you between 50 and 70 dollars, give or take a couple of dollars. But hey its better to pay that and to know what to do next instead of getting guesses. And they will give you the right answer the first time. Then you can see the best course of action you can take at that time. But really I would go to have it looked at. Even if you check engine light is not on.

Answer 2

Well the 3,000 to 3,100 RPM at shifts sounds about right depending on how hard you are pushing the accelerator. When parked down hill and you have not used the park brake you are against the parking pawl and it will be hard to shift from park and may kinda clunk or bang a little doing so. When shifting from neutral or park to reverse or drive sometimes there is a jerk or clunk because the drive line is slacking off and then going tight in opposite directions, or just going from slack to tight. Also 4wd vehicles like the explorer have some slack built into the drive lines so that it is not too tight for the 4wd system and cause 4wd issues. There isn't much monitoring on the transmission if any at all as far as fault issues go so you may never see a light of any kind on the dash even if the transmission were to totally outright fail. I have not seen a transmission problem trigger the check engine ("engine" not the transmission) light. A Ford tech may be able to hook up to the transmission and see an issue but unlikely, a test drive would be much better. I would keep driving it for a while and avoid paying the 160 bucks until you are positive there is a problem, otherwise you may spend 160 bucks and find out nothing. Also it is about time to have the fluid and filter changed on the transmission as well so I would do that first and see if the problem goes away. I know the book says 80-100K on transmission service but depending on how the car has been driven it needs done sooner sometimes.

Answer 3

HI

for the most part no on the check engine light for the transmission... but look at the fluid that is leaking ... Transmission fluid is pink or red and brake fluid is clear or amber in color..

good luck

tim

Answer 4

I would check your brake lines, and your master cylinder before driving your car again, cause if the brakes go, you are screwed. It probably hasn't gotten to the point where your brake light comes on but keep a bottle of brake fluid handy. A check engine light will only come on if it's computer related to your transmission. Like if your TCM wasn't working properly. Just have someone inspect your car figure out were exactly that leak is coming from.

Answer 5

Probably not.



What you need to do is get a big piece of cardboard, and park on it. Now you will have whatever is leaking contained, and have some idea of the general area it's coming from. Could be just water from your A/C, if so dismiss it.



Otherwise, black = oil, red = transmission fluid, clear but not water = brake fluid, and green or orange = coolant.

Answer 6

the only time the light will come on is if 1 of the transmission sensors malfunctions. transmission fluid is red. it could be that the pan needs to be snuged up.

Answer 7

a small amount no but if you see you got a leak then you need to have it look after cost cheaper than a tow truck and then having it fix does