Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

Engine wants to stall when A/C is on

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Old Sep 8, 2010 | 05:19 PM
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Default Engine wants to stall when A/C is on

everytime that i put my A/C it work ok when car is cold, after a 10min runing qhen my car get hot everytime i put it on neutral(manual) my rmp goes down and my car turn off, it does not matter in what speed i am or how fast i go i have to play with the gas to try it stay on, what can be and how can i fix this
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Old Sep 8, 2010 | 05:23 PM
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Default Re: A/C problem

Does the condenser fan run when the A/C is on?

Any CEL codes?

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Old Sep 9, 2010 | 07:28 AM
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Default Re: Engine wants to stall when A/C is on

yep cpndenser is working ok, and it frezz a lot, and not check engine, this only happen when car ets hot, lol, i am also runing a stock p28 on my stock d16y8, this make some difference?
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Old Sep 9, 2010 | 07:33 AM
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Default Re: Engine wants to stall when A/C is on

my 98 with a itr swap is doing the same thing , once at operating temp engine will stall with ac on , ac is ice cold and condensor fan works , but it still stalls , I even swapped out IACV's
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Old Sep 9, 2010 | 10:04 AM
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Default Re: Engine wants to stall when A/C is on

Originally Posted by titi_vtec
yep cpndenser is working ok, and it frezz a lot, and not check engine, this only happen when car ets hot, lol, i am also runing a stock p28 on my stock d16y8, this make some difference?
Clean the IACV and check whether the A/C system is overcharged with refrigerant. Is the condenser clogged with bugs and road debris?
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Old Sep 9, 2010 | 11:00 AM
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Default Re: Engine wants to stall when A/C is on

it was working perfect before i swich my tranny from auto to standar, there it star the problem and i have everything correct on my car there is not check engine light, no codes everything work and perfect the a/c is the only one that is making this problem and i test it, and there is not leak, no nothing my a/c is in perfect condition also i have a new compresor in which the problem not end, on old and in new, and everything is working perfect
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Old Sep 9, 2010 | 11:27 AM
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Default Re: Engine wants to stall when A/C is on

good question the same thing happens with my brother integra gsr and my boiz b16 hatch all the same...well hope theres an answer it would be helpful...
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Old Sep 9, 2010 | 03:44 PM
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Default Re: Engine wants to stall when A/C is on

Originally Posted by titi_vtec
it was working perfect before i swich my tranny from auto to standar, there it star the problem and i have everything correct on my car there is not check engine light, no codes everything work and perfect the a/c is the only one that is making this problem and i test it, and there is not leak, no nothing my a/c is in perfect condition also i have a new compresor in which the problem not end, on old and in new, and everything is working perfect

When you did the tranny swap, did you properly pin the compressor clutch relay to the ECU?
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Old Sep 9, 2010 | 10:06 PM
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Default Re: Engine wants to stall when A/C is on

yes i think so, where can i check that?
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Old Sep 10, 2010 | 05:53 AM
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Default Re: Engine wants to stall when A/C is on

Check whether the wire runs to the proper pin of the ECU.

If the compressor clutch relay is not wired to the ECU, the ECU won't raise the idle speed to compensate for the higher engine load from turning the A/C compressor.
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Old Sep 10, 2010 | 08:07 AM
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Default Re: Engine wants to stall when A/C is on

mmm... i check everything already and is all connected and ecu is good connected too
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Old Sep 10, 2010 | 08:36 AM
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Default Re: Engine wants to stall when A/C is on

Originally Posted by titi_vtec
mmm... i check everything already and is all connected and ecu is good connected too
If the A/C works and the idle does not increase when it is turned on, then it could be a problem with the ECU or the IACV circuit.

When the engine is warmed up and all electrical is off, does the engine idle up when the high beams, defroster, and vent blower (MAX) are turned on?
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Old Sep 10, 2010 | 03:54 PM
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Default Re: Engine wants to stall when A/C is on

not it just work ok in everything work normal, when i put the a/c with all of those thing on it work normal when car get normal temperature start doing the problem again like always
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Old Sep 10, 2010 | 04:16 PM
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Default Re: Engine wants to stall when A/C is on

try cleaning the throttle body it might only run better cold because of the fast idle warm up it goes threw
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Old Sep 11, 2010 | 04:01 AM
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Default Re: Engine wants to stall when A/C is on

ok i will do that and i let you know what happen thanks
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Old Sep 11, 2010 | 05:29 PM
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Default Re: Engine wants to stall when A/C is on

check the compressor to make sure that its running strong.
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Old Sep 11, 2010 | 06:34 PM
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Default Re: Engine wants to stall when A/C is on

i clean my intake manifold, throtle body and IACV, and is still doing the same, and my compresor is brand new, with the old one it does and with this one it continue doing it, my dad put my old on his car and work perfect with no problem
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