Question about 1990 Ford Ranger SuperCab

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How to replace heater core on 1990 ford ranger

V6 2.9L with a/c

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Remove the glove box door. Behind the glove box there will be a big plastic panel that contains the evaporator and the heater core. The heater core will be copper. That is the one you need to remove. Do not try to disconnect the aluminum one. That is for your AC. Remove the two heater hoses on the outside of the firewall that connect to the heater core and it will slide right out.

Posted on Mar 04, 2009

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  • 69 Answers

SOURCE: Replace heater core in 1988 Ford Ranger

allow the system to cool down

take radiator cap loose to release pressure

once pressure is released tighten cap

loosen clamps on the heater hoses in the engine compartment on the pass. side of firewall.

plug or cap off the heater core tubes to prevent spillage when you pull it into the truck

place a trash bag on floorboard in case spillage occurs

remove the five screws holding the heatre core access cover, three on top and two on bottom

carefully pull heater core back and down and remove it from the dash

install is reverse

Hope this helps

Posted on Mar 29, 2009

emissionwiz
  • 63801 Answers

SOURCE: heater core replacement

It's one of the easiest cores to replace that I have encountered. Disconnect heater hoses at firewall. Probably doesn't matter about hose placement, but I always mark them just in case. To remove the fiber cover under dash, take a flat blade screwdriver and pry out the center pin of the expansion clips that hold it in place. There are four 5/16 head screws that hold the bottom/drain tray cover. Core will pull through the firewall and then down. You may have to silicone/glue or replace the foam seal strips on the new core. Before you install the core, check the distance between the inlet and outlet tubes to ensure they match the openings in the firewall. This saves time. It helps if you have someone on the outside to guide you when stabbing the tubes through the firewall. Replace bottom cover. You may have to hold one of the tubes when reinstalling the first hose to the core. Replace any lost coolant and check for leaks prior to reinstalling the fiber cover. If the cover seal is in good condition, any leak should drain through the firewall, otherwise it may leak inside cab. .

Posted on Sep 10, 2008

  • 7353 Answers

SOURCE: easy way to replace heater core on an 98 ford ranger

the dash must come out.

Posted on Oct 11, 2009

rylee_smith
  • 8619 Answers

SOURCE: how do i replace the heater core in a 1990 ford ranger

Hi! First remove the fiber cover under dash, take a flat blade screwdriver and pry out the center pin of the expansion clips that hold it in place. Then unhook heater hoses, pop the glove box out of the way,
put someting in floor to catch the antifrezze, take your time. Get the cover out of the way and it will slide right out more room then it looks.Replace any lost coolant and dont forget to test the new one for leaks before you put it in.
Please ask for further clarifications.

Please rate this solution as fixya if found useful.

Thanks
Rylee

Posted on Mar 03, 2009

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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2 Answers

How do i replace the heater core in a 1990 ford ranger


Hi! First remove the fiber cover under dash, take a flat blade screwdriver and pry out the center pin of the expansion clips that hold it in place. Then unhook heater hoses, pop the glove box out of the way,
put someting in floor to catch the antifrezze, take your time. Get the cover out of the way and it will slide right out more room then it looks.Replace any lost coolant and dont forget to test the new one for leaks before you put it in.
Please ask for further clarifications.

Please rate this solution as fixya if found useful.

Thanks
Rylee

Mar 03, 2009 | 1990 Ford Ranger SuperCab

1 Answer

Replace heater core in 1988 Ford Ranger


allow the system to cool down

take radiator cap loose to release pressure

once pressure is released tighten cap

loosen clamps on the heater hoses in the engine compartment on the pass. side of firewall.

plug or cap off the heater core tubes to prevent spillage when you pull it into the truck

place a trash bag on floorboard in case spillage occurs

remove the five screws holding the heatre core access cover, three on top and two on bottom

carefully pull heater core back and down and remove it from the dash

install is reverse

Hope this helps

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1 Answer

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Heater core or one of the hoses are leaking. Low on antifreeze now so no heat.

Dec 31, 2008 | 1990 Ford Ranger SuperCab

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