temp. sender unit for the gauge

i am talking about the one in the drivers side head in between cyl. 3 and 5 is it one wire and can someone post a pic this for the gauge. 1992 astro

okay so if i am understanding this correctly this fan is 2740-4600 CFM so this will be plenty right even with the a/c?

i was looking on ebay cause if i can get electric fans cheaper then i will but i found one that pulls 3400 cfm and looks like it would fit the rad.http://cgi.ebay.com/ebaymotors/New-OEM-Dual-Electric-Cooling-Fan-3400-CFM_W0QQcmdZViewItemQQ_trkparmsZ72Q3a1015Q7c39Q3a1Q7c66Q3a4Q7c65Q3a12Q7c240Q3a1318Q...

are you talking about this one?http://www.flex-a-lite.com/auto/html/27 ... ctric.html

this is a dual 16 in electric fans they are suppose to produce 6000 CFM and pull between 28-36 amps these should cool the engine and the a/c very well right?

okay here is what my plan is i keep my stock engine cooling fan and add a electric fan on the cndenser side pushing air through the condenser and rad. http://www.flex-a-lite.com/auto/html/universal.html

also how should i test the egr valve?

if the egr is sticking open at idle is it cause of carbon or low vac?

could a EGR valve acting up cause a low idle and make it rough? cause that is what i am leaning towards also the exhaust does smell a little rich could EGR valve cause that?

i meant grounds sorry

i did the plug trick and came up empty here is something weird when i come to a stop or anytime i am stopped it seems and feels like my idle is too low. but i have not ruled out a vac leak but the idle would be higher.

how many and where are them this is a 1992 astro

i did a full tune-up and checked for misfire and there is none all plugs firing here is the problem when the engine is idleing in park i can feel the engine viberting more then it should when cold it is not as pronouced but when warm it is it feels like a misfire at idle when i put the van into gear...

here is another idea if the guy that is selling the van is telling the truth and he caught the overheat in time then it might be okay and it could have just blown a head gasket then it should be okay also if he will let you, you should take the plugs out and try to turn the engine over to see if the...