1999 Mazda B3000 Questions

I have replaced the thermostat the fan clutch and head gaskets only thing I have not replaced is the water pump but it's not leaking and the bearing seem to be fine I put a junkyard Radiator in it keeps overheating please help

99 mazda b3000 speedometer started bouncing and trans started jumping in and out of gear at same time .when out in drive it will shift up and down hard .any advice .

Anti theft

I changed alternator, have a new battery. Truck started when battery first installed, ran for a bit but wouldn't restart once turned off??

I replaced key cylinder , now I need new keys programed . I didn't realize this could be so complicated . I don't have a lot of money . I don't understand why you can buy the cylinder replace it but you can't program the keys to it . Please help

I have an elbow that comes out of the lower thermostat housing and connects to the lower radiator hose. There is a line that runs out of the air compressor and right across the elbow. Ive already loosened the line but Im having trouble getting the elbow to clear everything that is still in the way such as the bracket that holds the top pulley which sits next to the air compressor. Surely I'm not going to need to disassmble the entire front end just to get this one small pulley screwed in. Im replacing it because I had a pin hole leak. Can anyone help me? I can describe everything needed to know including part numbers and schematics. and even photos. Im getting desperate here.

Any way runs rough when cold worms up smoths out but still has small miss like carb. With no choke

I was driving down the road headed home when I noticed a light sounding knocking noise that knocked faster when I sped up and slowed when I slowed down. At home I put my truck in neutral and revved up the motor and the knocking noise went up with my rpms. It seems to becoming from around flywheel, clutch, pressure plate area. It has a brand New flywheel and pressure plate they were replaced about a month ago and everything has been running smoothly besides it grinds shifting into 2 gear which started right after I replaced everything. Any ideas? Also if it helps diagnose the issue the slave cylinder has been replaced 4 times in 3 years. Once with me and 3 times with the previous owner

Seemed much better for a short while (1 day) after I replaced fuel fiter, but started back again.

Was good for a day, now doing it again. Any help on where to go next?