96 2.7L Taco - No heat in the cab!!

[2tacomafreaks]

Folks,
   It's now getting a bit cold here in Maine.  I just turned on the heat for the first time (only had truck for 2mos) and it blew cold only.  Any idea what my mechanic is going to need to repair/replace?

[ComaSport4x4]

Could be a few items...you need to check.

thermostat, coolant level, broken diaphram, bad vacuum line. 

[SD YODA]

check and make sure your shut off valve is working first off. its the little black diaphram lookin thing coming from the engine bay into the cab. it'll be connected to your heater lines. if that works, then take a look at your thermostat. what temperature are you running? if its too cool like 165 or whatever, it may be too cool of a temperature and may be that the cooling system lets the hot water through too fast to feel any heat. finally, the dreaded heater core. it may be clogged or not receiving water for some other reason. have those checked out. at worst, you might need a heater core wich would be the more expensive repair (since you have to tear the whole dash out to get to it)

[2tacomafreaks]

Thanks for the response.  Currently I am in the midst of getting my truck fixed.  The lack of heat is something new that I didn't know was wrong with the truck until I needed the heat.  I am waiting to get my truck back into the garage, my Civic Si is in there right now, when it comes out, my truck goes back in.

Currently my truck comes right up to temp (less cab heat though).  It has this weird power surge the entire time I am commuting up the highway (kind of like it isn't getting enough gas).  Once I get off the highway, the engine gets happy, and heat magically appears into the cab and all is well with the planet.  It's very weird.

[SD YODA]

Thanks for the response.  Currently I am in the midst of getting my truck fixed.  The lack of heat is something new that I didn't know was wrong with the truck until I needed the heat.  I am waiting to get my truck back into the garage, my Civic Si is in there right now, when it comes out, my truck goes back in.

Currently my truck comes right up to temp (less cab heat though).  It has this weird power surge the entire time I am commuting up the highway (kind of like it isn't getting enough gas).  Once I get off the highway, the engine gets happy, and heat magically appears into the cab and all is well with the planet.  It's very weird.

".... a disturbance in the force it feel, yes...."

[lifetrddeath]

The wierd power surge you are talking about could definitely be a loose spark plug or spark plug wires.  Only reason I know is because my 93 Corsica LT I once drove did the same thing, nothing a quick tightening and new wires couldn't take care of.

[2tacomafreaks]

Quick update...

Looks like, in the end, it is the fuel injector filter screens.  The prior owner NEVER swapped out the fuel filter, so the gunk all made it to the filter at the injectors.  I need to have them disassembled and cleaned.  After that my taco will be back!

There was tons of things fixed.  The bolts that keep you from turning your wheels too far.  Broken off!!  No wonder my truck turned tighter than my Civic Si.  My air mass sensor was also gunked up, it ended up being a total message awakening for my engine.  My mechanic said it now scoots when you want it to.  I can't wait to get it back from the shop.

[Matt]

Sweet....glad we got some medicine for the sick Taco.

[SD YODA]

Sweet....glad we got some medicine for the sick Taco.

with that much done to the truck, it should feel like a new machine!