1991 Ford F-150 cranks but won't start?

Battery got hooked up backwards, this is what I've replaced so far; Solenoid, Starter, Coil, Distrubutor cap, ICM, Spark plugs&Wires, Fuel Filter. I've tried using starting fluid and used a different battery and didn't make a difference, it cranks over but doesn't fire up so would the computer and pick up module need replaced? Any things I need to check or do to help solve the problem? I like to get it running soon.

I'm trying to pinpoint what is making my vehicle shake. Can anyone be of assistance?

I have a 2004 Ford F-150 4.6 RWD truck. It shakes/vibrates when driving it. I just changed the front wheel hub assembly s including the rotors and brake pads. The tires are inflated to 35lbs per the vehicle door tag. I have had a alignment, tires rotated, spark plugs, and all COP changed to new ones. I still can't find why it does this.

Proper way to read dipstick?

I changed my cars oil on Friday, and drove probably 100 miles since then. Today I opened the hood, wiped off the dipstick, put it back in, and looked at the 2 holes on the dipstick. Only the bottom hole was covered. I did it again and same thing. The whole bottom part of the dipstick looked like it had oil on it, so I thought I overfilled, but then again only the bottom hole was covered? I'm kind of confused on if I put either too much in or too little… My truck requires 7 quarts so that's what I put in. It's an 07 Ford F-150 5.4.

What should I name my truck?

I recently bought a 1996 Ford F-150 XL, it's red with two white stripes. Most people would call it "big red" but I also own a 1985 honda atc250es which is also called "big red" which is why I'm having trouble coming up with a name for the truck

What vehicle should I get as a teenage guy?

Main 2 I've looked at so far is a 04-07 f150 xl single cab or 03-06 Ford Mustang. Looked at a few 4Runners but can't find any good ones currently. What would you prefer? And any other ideas for cars/trucks?

Is there something I could legally do with my auto purchase?

We have recently bought a truck from a Guy who works for a leasing company, he bought the truck from his boss ( the company is in cali, i live in vegas) and sold it to us. The title is under the company name. Byrd Leasing LLC.

the truck is an ford f-150 and runs on natural gas. Now we tried to transfer the papers to our names from the dmv and they would not pass the emissions test, they said the gas tank expired last year.
now we tried to go back to the guys house where we traded and picked up the truck and the guy would not give the money back.

is there something i could legally do to get my money back?

1995 Ford F-150 stuck in a limp mode?

1995 f150 keeps going into limp mode, and e4od transmission seems to buzz when it's in limp mode. We ve replaced the EGR valve, vacuum reservoir, neutral safety switch, vss, throttle positions sensor, tune up. Had it put on the scanner and it came up with something with the EGR system, replaced the vacuum reservoir and the check engine light hadn t been on since, scanned it again, said EGR valve wasn't getting pressure, so I cleaned the tube to the EGR, checked vacuum lines, everything seemed okay. I'm loosing my patience, I don't know what else to do, any suggestions would be great!