how can I tell if my map sensor is bad or going bad with out getting it tested???

 

Well, Ive never tried this (yet) but I was thinking about doing it till I found out I had the vaccum lines hooked up wrong.

Put a multimeter (resistance) on the MAP, hook up a section of new hose (tastes better) and suck on it. You should see the resistance change.

Again, I almost tried this but didn't. Try it at your own risk but please post results if you do.

 

thats a kinda odd way to test it dunno if I wanna try it or not maybe I can get my wife to do it

 

I'm glad you saw the humor in that post. I was LOL while typing it. The real funny part is that I was actually going to do it. Thankfully, I found that I had plumbed the vac lines wrong.

Charles

 

Technically that ought to do it. You've gotta have power to it though. I'm not familiar with MAP, so I don't know if the engine needs to be running or not.

A more accurate test would be to measure its voltage whilst sucking on it, instead of its resistance. They do sell handheld vacuum pumps for just this purpose.

 

OK. Now I'm going to have to figure this out. I have a vac pump for vac forming small plastic parts for my RC airplanes... I'll try to find some time to replumb and test this stuff out. Don't hold your breath (pun intended).

Charles

 

https://www.thirdgen.org/forums/tech...ge+temperature

Vader already did this, or at least relayed the info....

 

ok here goes it I tried the whole sucking on hose thing with multimeterbut instead of hose I used a straw from mcdonalds (pause for the laugh).............and hooked up meter then sucked on straw noting on meter from old map so went and got new onetried the same and worked ok so the whole straw and multimeter thing does actuall work
a big thanks to atomic truck,,,,,,,,,,,,,,steve

 

Thanks for the link bobdole. I'll do some testing and add some resistance values to go with the voltage.

Thanks