from second to third gear my car is jumping or lagging

changed belt and pumps at 102,000, now at 134,000

When I accelerate the noise sort of follows the shifting of the tranny. Is this timing ? Tranny ? Had alternator tested by AAA when car died, says ok. Don't have owners manual, how do I check codes ? Thankyou.

when average breaking then gently to acceleration (Dc traffic}, the trans seems to be in transition to lower gear then it jerks violently forward as if it has chosen a gear too low. the engine will wine and race before it finds a gear then it lunges forward. Shift sensor?

Doors are open. Cannot open gas door or trunk. How can I open the hood to charge or replace the battery? The car has 130,000 miles on it and is a great car.

Pretty sure the exhaust is leaking near the manifold. Just returned from a 550 mile trip and the exhaust got obnoxiously loud about 100 miles from home. Took it for an expection a month ago and it passed no problem. Called shop to have the oil changed and the exhaust diagnosed and the owner warned that the cost could be 600-800 dollars depending on the parts and location of the leak. I'm not getting any error message on the dash either. Anybody have an experience with a similar issue?

There are no other electrical or mechanical problems, it just stopped working one day. I push the button and it doesn't change.

I had an oil change and emissions test at a JiffyLube location in Utah last night. As I was driving home the check engine light came on. I returned to the service station today, and the diagnostic test showed a P0157 code. The manager didn't want to take responsibility for anything saying it was simply a coincidence.

Is he right, or is there any way the sensor could have been affected by the emissions testing?

It happens every time I accelerate for only a few seconds, then goes away. It almost sounds like a creaking like maybe something is not tightened up all the way. I bought the car used so do not know repair history.

I have very seldom used the window, but on the hot days I like to get fresh air

is bad what would that costs

New tires, new brakes, no prior mechanical issues.