20 Most Recent 1990 Toyota Pickup - Page 6 Questions & Answers

Speedo cable?

most likely you have either a plugged radiator or blown head gasket.one way to check if its a head heating than you know its a head gasket.But when u reove the thermostat open the radiator cap before you run.after you remove the cap astart the vehicle and check for good circulation in radiator.Hope this helps.

The lighter wiring should be there taped to the harness behind the area where the lighter goes.

Could it be the fuel filter - I have had that plug up before on a Nissan.

Please refer to this link for full instructions on setting up the new chain or old one after head repair.

Generally speaking, you use 90 wt unless the owners manual calls for something different, and you fill it up to the fill hole in the side of the transmission. The hole is usually half way up the side of the trans.

check to see if the starter is staying engaged after use check and make sure of the starter clearance it may need shimmed make sure no wires are rubbing causing the starter to engage at the wrong times

I would start with new spark plug wires and plugs, also replace the distributor cap and rotor if it is the original part.

Yes you can test the injector pulse signal with a tool called a "NOID LIGHT". You can buy this handy little tool at any auto parts store like NAPA or Carquest for about $5, it plugs into the injector connector and flashes each time the injector is commanded to open by the processor. I personally think you have a defective wiring harness on the engine.

Recheck your fuses. Very likely the one for the reverse lamps blew out. Even if it looks good, try replacing it.

If you hear it going around corners, it "might" be normal. It depends on a number of factors. Do you know if it is a limited slip differential? If so, they tend to make a little more noise than conventional differentials. Is the fluid level low? Generally speaking it should be level with the bottom of the fill hole. Also check to make sure the vent is not blocked up. If you have a locking differential, the noise will usually be a bit a ratchety as the one clutch grabs and releases. If there are no leaks at the wheel seals, it should not be a major concern.If however it is a knock sound consistent with tire rotation, you want to check it out as a spider gear shaft "might" be working loose, and if it does, you are going to have bad day as you find out how quickly you stop with a locked up rear end.If the noise appears when shifting from reverse to forward, or vice versa, it may simply be increased gear lash between ring gear and pinion, they can be very fogiving, I have heard some vehicles where the driveshaft would ring like a bell when shifting direction from backwards to forwards. It just becomes evident as the gears "wear in" to each other and is normal. As long as it runs quietly on the highway, and you can live with it making some noise when shifting from forwaed to reverse and forward again, it normally is not a great concern. If a whine from the gears develops, they are approaching a point of going out of mesh and should be checked and adjusted.

check the wire from the alternator to batt, also a 7amp fuse marked alt this ist how the computer controls it.

maybe the distributor or starter