now when you say replaced heater fan multi speed are talking the fan or the switch because ther is a fan speed resitor that can go bad and fan only works on high speed which can cause conector to get very hot and cause insolation on the wires to melt and cause a short in the harness making fan run constantly.
The answer is that is may create a problem when you want to use it with natural gas. Best is just to scrap it.
The nuetral safety switch may be bad or not hooked up right on the trans. that was installed.
If you have just replaced this starter then you probably have it hooked up incorrectly. If it is still the same old starter, then it has shorted out inside and needs to be replaced.
are u sure the original problem was the battery and do you have the cables hooked up correctly.
did you get all the electrical connection hooked up on the fuel tank ?
NO, not unless its marked , just make sure it is earthed properly and all connections are tight.
battery hooked up backward, wires crossed somewhere or it could be the solenoid.
First off when you cut the switch on in your truck listen for your pump to come on. If it is working properly then you can look under the hood of your truck and find the fuel line coming from the pump and take it off to make sure that fuel is coming through. If it is not then i would replace the fuel filter which is hooked to the fuel lines under the truck. It could be stopped up and needed replaced. Good luck!
if you have already replaced the motor, i would look into getting a window regulator. take some spray silcone and spray the window tracks. when a fuse blows it blows. all the fuse dose is provide a path for current to flow. when it blows there is a "open" in the circuit and current will no longer be able to flow. sounds like it could also be a bad ground.
if it is an after market deck you must have the dash wires not hooked up behind the deck, and for the fuse replace it....
This is commonly cause when the transmission is replaced and the shift linkage is not hooked up properly. Find the shift cable on your transmission and disconnect it, then put your shifter into park. The transmission linkage needs to be put in park as well. Now that both the transmission and your shifter are in park, you can adjust the cable accordingly and reconnect it. This should solve your problem.
Sounds like your catalytic converters are plugged up.