i have a fault code 23 and it is the MAT sensor. when the car is cold it will run as soon as it gets warm it stops working.

I feel a sudden shock (jump) when I shift from N to D
This problem happens only when the car is stopped and I shift from N to D
This is not happening every time, sometimes the shifting from N to D is smooth
Otherwise. the transmission is shifting very smoothly between all gears at all times
Thanks for your help

When I start the truck it will run fine for a second or two, then it idle's rough, runs rough, has no power and then after it warms up to temp and has been running for 30 mins or so, the engine block, heads, and intake are still cold. I have been a mechanic since I was 7 years old, and I can't figure it out. My dad has been a mechanic for 40 years and he can't figure it out either. What can the problem be?

just put an a used distrbotor on the car. It still doing the same thing. An the service engine light is on. It have new plugs on the car an put fuel injector cleaner in it.

car will not start

The dealer said the check engine light indicated replacement of the emission purge valve.

It has a symbol thats popping made like a D with a line going through it. What should I do first to see whats going on.

I had a front halfshaft replaced and the shop did not change the axle seal. I now have a transmission leak that I never had before and am wondering whether the fact that axle seal was not replaced could be the cause ? The transmission leak is at the transaxle area near the halfshaft entry to the transmission.

i just wanted to know if i can replace my clutch from the top of the engine or if i have to get under it or pull it..thanks

There is no voltage at the coil or distibutor. No spark anywhere.

Just started recently. Took it to the Honda dealer. They said that all three of mounts were bad needed to be replace. Could that be the reason for it to jump out of gear when I make right turns or hit a dip or do you think I am having transmission problems?

The check engine light in my 98 Camry is on. I stopped into a local dealership and was told it is the VSV valve most likely. about 4 years ago I had the check engine light go on and was told it was the ERG. is this part of the same system? What are my options here? (replace both, clean and reset the light, replace the VSV)

I have located one fastener to remove (on top) but cannot see what else is holding it on.

replaced the ccm and headlight switch

how many amps is for the lighter.