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Discussion Starter #1
I live on an island and own a 1999 CRV with 120K miles on it. Just had a new radiator put on and now the car is intermittently sluggish but more so when going up hills. The engine light flashes when the car bogs down (mostly when on hills) but stops flashing when driving on flat areas but something still seems "off" even then. There are no dealers, only "backyard" mechanics here. There is one guy about 5 miles away (up a few hills) that can pull codes. Could there be a correlation between replacing the radiator and this new problem?
 

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What are the codes?
http://www.hondasuv.com/members/showthread.php?51783-How-to-DIY-Blink-Codes-on-your-HONDA
Did the engine overheat to the point of loss of power before the radiator was replaced?
Did you 'burp' the coolant system? That could be part or all of the problem.
Possible catalytic converter problems. One way to check with out diagnostic tools is to remove the primary O2 sensor and see if the power gets and stays better. It will be loud, but it could tell you that the cat is plugged up.
If someone has an infrared thermometer, you can check the cat that way.
Other things to check:
NGK spark plugs (V-power)
Spark plug wires (when it is dark and the engine is running, mist some water over the wires and if you see a light show, they may be the problem.
Distributor cap and rotor condition
Ignition coil
Igniter
Fuel filter
Buffalo4
 

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like was asked, was it okay before the rad was changed?
if so, obviously something with that repair is the cause.
is it the CEL that is flashing or another engine/dash light?

backtracking good even when not a hunter.
 

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A flashing CEL is normally a misfire. Could be the plug wires got disturbed and the rubber cracked from being old and rotted. Could also be that there was water/coolant spilled on stuff either from whatever caused the radiator to need replaced or a sloppy change job.
 

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Discussion Starter #6
For those that asked, I did not have the flashing CEL and the bogging down before the radiator was replaced. Thank you for all your suggestions.. We attempted to "burp" the cooling system and did get a few bubbles out and it improved a bit but mot much. I have it back to the guy who replaced the radiator and asked him to work on getting more air out of the cooling system. He and I took it for a spin and he feels my problem could be bad plugs or a coil. Like I mentioned..I live on an island and parts are not easy to come by. I took him plugs, air filter and fuel filter and asked him to check the wires It is entirely possible that one or more could be cracked. The CEL has been on since my first gas up when the car landed on the island a few years ago. It seems that EVERY car has a CE light on... I am bringing down an O2 censor next trip. It was the flashing engine light that disturbed me the most and from what I've researched it is most likely a misfire. I may have to purchase and bring down the OBD2 scanner with me on my next trip over to really get to the bottom of it. Good mechanics are few and far between.
 

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What prompted you to replace the radiator in the first place?
 

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Buy the correct NGK spark plugs (esp if you now have Bosch in it now) if inspection shows you need new plugs. Spark plugs are very easy to remove and check. http://www.ngk.com/Automotive-NGK-l1411.aspx
NGK 4291 ZFR6F-11 V-Power Plug
SKU: #ZFR6F-11
ITEM : # NGK4291
Around $2.50/plug online.
What was the brand and number of the spark plugs you gave the mechanic? Curious.
If you follow the link I posted earlier , http://api.viglink.com/api/click?format=go&jsonp=vglnk_14434687094339&key=e0f4d5b76756fc288c9c1e5986e97af4&libId=if4bmvk901000b4v000DAmpu3pw2e&loc=http://www.crvownersclub.com/forums/14-problems-issues/93113-radiator-replaced-now-have-engine-power-loss-flashing-engine-light.html&v=1&out=http://www.hondasuv.com/members/showthread.php?51783-How-to-DIY-Blink-Codes-on-your-HONDA&ref=http://www.crvownersclub.com/forums/14-problems-issues/&title=Radiator replaced, now have engine power loss and flashing engine light&txt=http://www.hondasuv.com/members/show...-on-your-HONDA, you should be able to get the codes without a reader.
Why replace the O2 sensor if it isn't required? Still, if it has never been changed, it won't hurt. There are two O2 sensors for your CRV (primary and secondary) so make sure you get the primary one if you are going to replace it. Buy a Denso and not a Bosch for best results.
You also said a guy up the hill about 5 miles away has a code reader, I believe.
Don't throw parts at it, unless you have no other choice and it can get expensive fast.
Enjoy your island life.
Buffalo4
PS: Don't know where you are located but: http://www.ebay.com/itm/NGK-ZFR6F-11-Spark-Plug-FREE-US-SHIPPING-/161265269930?hash=item258c28bcaa&vxp=mtr#vi-ilComp
PPS: There are several posts on burping the engine on a CRV and more on the Internet.
 

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Could there be a correlation between replacing the radiator and this new problem?

To answer your above question........NO, JMO.......Sounds like spark plugs breaking down on hard pull, as you mentioned going uphill. Use only NGK like Buffalo4 mentioned, you will be satisfied.
David g.
 

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When burping the coolant system, make sure the heater temp control is set to max just to help ensure that the coolant flows through the heater core and pushes any air bubbles out.
Buffalo4
 

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"The CEL has been on since my first gas up when the car landed on the island a few years ago. "

and of course the gas cap is on tight which if it isn't is will cause CEL?
and gas filler seal is still good etc?
simple stuff I know
 
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