Once I get the car started it drives just fine... It just has a really hard start

My car was blowing cold air and then overheated. Took it in to my mechanic, replaced the thermostat and flushed the core out. Heat and car worked great for two months, then the same things happened, took it back in and he flushed out the core again, heat worked great for four days now it is doing the same thing. The mechanic says the core is the problem and wants $657.00 to replace it. From all my own research people say it is either the core or the actuators that will cause this nonsense. Anyone have any thoughts on this matter? I appreciate your time and assistance.

The key slides freely in and out of the ignition but it will not turn. I've tried turning the stearing wheel, messing with the tilt. I've stepped out of the car locked it, unlocked it and still no luck. (SIDE NOTE: I have one of those nifty cars that have the ignition in the dash, not the stearing column).

Just started this evening, have not noticed it before. No codes or messages appear on message board. coolant has been filled

have been having problem after problem w car and today key again locked up so i looked at all wires and found almost all of them burnt under hood i c put connecters on and installed radio and radio wnt turn on and key wnt turn so i disconnected radio and gave it a try the key turned car started all my guages started working again, i thought u needed the radio was the cars mind?

My gear shift is loose and will not go in drive,reverse etc as if its not connected to anything I just got out my car and got back in and this happened what can be the problem?

I took everything apart and all wires are good, fuses good. So I guess I'll have to get new ignition lock cylinder, but would the lock cylinder cause the problem w shifter nob not popping out all the way? I also noticed that my battery (positive) screw is stripped so I put a charger on it and noticed there is no charge on positive side. Would that cause all the problems?

Wondering if I can put a 6 gaugd instrument cluster into my 2004 impala base 3.4lcl currently have the 3gauge

Wondering if i can put a 6 gauge cluster into my impala currently have the 3 gauge

I was told to replace a sensor in the steering wheel, where can I find a book on how to do this? low budget

On a very rainy day, I got some gas from the Shell and 15 miles later, my check engine light starts flashing and my car starts shaking as I accelerate.. Pulled over to the side of the road and my exhaust smells like I just fired off some fireworks.. Exhaust from the tailpipe is colorless... Took it to auto zone and I get the code for multiple misfires, system too lean, torque convertor sensor stuck on "On",and something about my fuel gauge.. Please give some idea of what wrong so I don't get highway robbed by a mechanic lol..

driving down the road and the blinker sound will start up. The signal lights do not come on but the sound is still heard, now the door alarm will sound also. Had flasher replaced and stopped the sound for awhile but has now started again.

I called for a quote on replacing my struts and this is the cheapest place where I can do that. Other places will charge me over a grand and its just $600 here for front and back struts. The man said I need to replace the front end as well as the back end if I replace my struts but its only the front that needs replacing. My car is kinda old and I'm tight on cash so does anyone know if I should replace both ends even if its just the front end struts?

1 - going from stop, you gas it & it starts to move like it's under a strain then a deep internal slam & it takes off. could be trying to start in a higher gear then dropping into 1st when rpm's increase?
2 - randomly has a bump or thump when upshifting under light throttle (all 3 shifts), other times shifts quietly & smoothly.
Both problems are very intermittent, doesn't seem to matter if it's warmed up or cold

I notice a roaring sound in my engine when I get about 25mph or so. Now I hear a gurgling sound when I start to drive.