Heater Core

kc disco guy

Well-known member
Jun 27, 2012
102
0
kansas city
Yes like i said i have done it with out cutting its kind of hard to cut a customers dash up and then piece It back together with aluminum. By the way did you get your starting issue sorted out? Discorover007
 

DiscoRover007

Well-known member
Dec 28, 2011
51
0
NC
Oh did you see my thread on LRforums? Haha no my truck is not running currently. I recently replaced the heater core and then later replaced the head gasket. The best idea i have so far is that my intake wasnt on as tight as should be and the intake gasket was toast, or my spark plug wires are damaged.

Please take a look at the thread and tell me what you think my symptoms sound like. I describe symptoms throughout the thread. I've gone over every vacuum/electrical connection. I've got the upper intake off currently because i want my friend of mine who's mechanic/engineer is going to take a look. He's way more advanced then me.

http://landroverforums.com/forum/discovery-ii-18/truck-wont-start-after-heater-core-head-gasket-replacement-50812/
 
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DiscoRover007

Well-known member
Dec 28, 2011
51
0
NC
I havent done anything but taken off the upper intake to check my wiring. I havent tried firing it up yet because ive got a mechanic friend of mine who should be coming to check it over tomorrow. As far as i can tell i havent missed any wiring. I'm leaning towards plug wires. I dont think its the crank sensor because ive had zero problems with it or start up for that matter before this job, plus i dont think I would even get to misfiring if the sensor was out.

I remember when i was putting everything back together I connected the batter before putting the alternator all back together and one of the cables sparked up. I think it was the negative alternator wire. Maybe i blew a fuse or something.. will check tomorrow. What about the intertia switch? Can it cause the same symptoms or does it keep the truck from starting completely?
 

kc disco guy

Well-known member
Jun 27, 2012
102
0
kansas city
Inertia dont believe that is your issue it is the disable switch and wouldnt allow the truck to start.
Yes you could have blown a fuse but that would be tooooo easy, it really sounds like a vacuum leak to me. Just thinking of that gasket but you have not run it all over the place since the job so i would think you could get away with getting. Those bolts torqued to the right specs! I am wondering because of that issue if you got the rest of the bolts torqued to the specs and in the right order?
 

DiscoRover007

Well-known member
Dec 28, 2011
51
0
NC
I picked up a new upper intake gasket just in case. I haven't bolted it down yet. I'll be putting it all back together tonight.
 

geoff

Well-known member
Apr 23, 2004
164
1
Austin, TX
I did the heater core over the weekend without removing the dash - thanks for the help and also this thread: http://www.discoweb.org/forums/showthread.php?t=90937. I have a 2004.

Removing the dash supports on both sides of the passenger footwell allows for the dash to be pulled out of the way. You can then remove the blower housing and access the pipes and core, which slides out after the pipes are disconnected. I used a long screwdriver to gently pry the old core away from the heater pipes. I may have bent the pipes some getting them out of the way, but I was able to line them up and tug again to realign them. Getting the wrap around clips to work was a big pain.

I did the whole dash with my '93 RR and was hoping to avoid that nightmare. This took about 6 hrs.

I had my daughter start the engine long enough to push the air out when reconnecting the heater hoses. The weird thing was the lower pipe is the out and the top this in. Seems counter productive to removing air. On the top of the engine the pipe closest to center is in to the heater core and the pipe closest to the fender is the out.