How to replace an alternator in a 1998 nissan frontier truck

SOURCE: Nissan Frontier torsion bar replacement

well it depends how you want to adjust it, if you want to lower it, back out the screw on the torsion key a couple of turns. raise, screw it in a couple of turns

SOURCE: 1998 nissan frontier 4x4

Well since the lights are controlled by the OBD (on board diagnostics), you'll have to reset it. You may be able to do this by simply disconnecting the battery for a few hours. However, a lot of newer vehicles have electronically locked radios which require the manual to be able to be re-enabled.

I'd check out the radio before disconnecting the battery.

The only other ways are to physically disconnect the lights in the dash or get someone with an OBD reader to clear the codes.

SOURCE: 1998 nissan frontier misfireing

check spark plugs.
with the engine running (idle)
disconnect one spark plug cable,
see if your engine goes at lower speed or notice engine speed variation.
if it does, the spark plug is OK. it no change, the spark plug is bad.
reconnect the first one then disconnect the next plug.
do this untill at the last spark plug connection.

SOURCE: 2000 Nissan Frontier replace headlight

there is a holder for the head lights you have to unscrew this holder from the outside on the front of the truck unhook the plug on rear of head light then reverse the process to reinstal good luck

SOURCE: 2006 Nissan frontier 4 cylinder belt diagram + tensioner pulley

They are under the hood or on the front crossmember.

Regards,
matt