idle fluctuates when a/c is on

[chorb]

my car is a mazda familia efi. I observed the problem just two days ago. Once the a/c kicks in, the idling fluctuates. i don't know if it's an electrical problem, bad sensor, timing, or it just needs a tune-up. The last tune up i had was aug 15 last yr.any thoughts?

[Hanren]

my car is a mazda familia efi. I observed the problem just two days ago. Once the a/c kicks in, the idling fluctuates. i don't know if it's an electrical problem, bad sensor, timing, or it just needs a tune-up. The last tune up i had was aug 15 last yr.any thoughts?

possibly dirty throttle body. Also check the Idle Air Control Valve (IACV) .. it might need to be replaced already.

[cliffy1523]

possibly dirty throttle body. Also check the Idle Air Control Valve (IACV) .. it might need to be replaced already.

sir, ung sakin 96 corolla gli na matic...if a/c is on nag idle sya sa 1000rpm, at pag bumuga ung compressor ba un ng a/c??? tumataas sya ng hangang 1250rpm..........has this something to do with iacv also???

thanks!

[Hanren]

sir, ung sakin 96 corolla gli na matic...if a/c is on nag idle sya sa 1000rpm, at pag bumuga ung compressor ba un ng a/c??? tumataas sya ng hangang 1250rpm..........has this something to do with iacv also???

thanks!

opposite naman siya dun kay chorb.. Im not sure about your case pero ang IMO, the iacv (or servo or idle up - whatever they call it depende sa car brand) is used to maintain the idle settings to the same level whenever the a/c is on. In your case, baka sa ECU settings na yon..maybe you can have your trusted mechanic do the diagnostic tests or let's wait for other inputs from the gurus here ...

[artpogi]

sir, ung sakin 96 corolla gli na matic...if a/c is on nag idle sya sa 1000rpm, at pag bumuga ung compressor ba un ng a/c??? tumataas sya ng hangang 1250rpm..........has this something to do with iacv also???

thanks!

IMO your idle is high.

here's mine, my car is a also 1.6 fuel injected sedan:

A/C on and engine in ideal working temp and compressor not pumping, my idle is 800

A/C on and engine in ideal working temp and compressor pumping, my idle is playing between 900 and 1000

it's possible it has something to do with your IACV, have the IACV, throttle body and intake manifold cleaned first, then observe.

[speedyfix]

have the tb cleaned muna and all the sensors checked. also see if the a/c is over/under charged with freon as that may be the cause also.

[heavenn75]

I had this bad encounter lately. I had my AC compressor replaced w/ a pajero or dual AC cmpressor type a month ago. After two days, start na magloko engine ko. Namamatay engine ko pag matagl na gamit AC while on the road. I checked it with casa, servo is ok naman daw. I went to banawe din, ginawan nila bago AC wiring dahil wala daw line sa servo ko. OK sya for 4days tapos balik ulit prob ko kanina. Ano pa kaya pwede ko ipa-check para maayos na? I just wonder kc pag wala AC lakas ng hatak. M having thought baka dahil sa pang pajero AC compressor nakalagay sa sedan ko kaya ganun. pls help me solve this prob. Tnx a lot!

[autopilot]

sir, ung sakin 96 corolla gli na matic...if a/c is on nag idle sya sa 1000rpm, at pag bumuga ung compressor ba un ng a/c??? tumataas sya ng hangang 1250rpm..........has this something to do with iacv also???

thanks!

yes definitely nasa aicv yan,d worse sa ecu.have it cleaned munaand check mga vacuum hoses.nagbblink ba eng check light car mo?

[autopilot]

my car is a mazda familia efi. I observed the problem just two days ago. Once the a/c kicks in, the idling fluctuates. i don't know if it's an electrical problem, bad sensor, timing, or it just needs a tune-up. The last tune up i had was aug 15 last yr.any thoughts?

try mo ipa timing ,pero madalas sa aicv-aac valve yan.disconnect mo carbon canister solenoid or plug d medium size vacuum hose.linisin mo rin TB nyan.

[autopilot]

my car is a mazda familia efi. I observed the problem just two days ago. Once the a/c kicks in, the idling fluctuates. i don't know if it's an electrical problem, bad sensor, timing, or it just needs a tune-up. The last tune up i had was aug 15 last yr.any thoughts?

mataas pa rin ung kay artpogi,ideal is 850+- 50 rpm.tipid sa gas.baka advance timing mo pogi.chorb hanap ka na ng surplus kungnd umubra nlinis.assembly kunin mo local ha.wag japan surplus.

[autopilot]

I had this bad encounter lately. I had my AC compressor replaced w/ a pajero or dual AC cmpressor type a month ago. After two days, start na magloko engine ko. Namamatay engine ko pag matagl na gamit AC while on the road. I checked it with casa, servo is ok naman daw. I went to banawe din, ginawan nila bago AC wiring dahil wala daw line sa servo ko. OK sya for 4days tapos balik ulit prob ko kanina. Ano pa kaya pwede ko ipa-check para maayos na? I just wonder kc pag wala AC lakas ng hatak. M having thought baka dahil sa pang pajero AC compressor nakalagay sa sedan ko kaya ganun. pls help me solve this prob. Tnx a lot!

baka under rated ang alternator mo to drive the ac comp na mataas amps.nddrain batt mo kaya nagstall engine mo,IMO lang.

[cliffy1523]

IMO your idle is high.

here's mine, my car is a also 1.6 fuel injected sedan:

A/C on and engine in ideal working temp and compressor not pumping, my idle is 800

A/C on and engine in ideal working temp and compressor pumping, my idle is playing between 900 and 1000

it's possible it has something to do with your IACV, have the IACV, throttle body and intake manifold cleaned first, then observe.

i had it tune up last week....cleaned throttle body, servo (w/carb cleaner???) and adjusted the timing.....so far ok naman sya, i mean it went down to 750 while at idle and rises to 1000-1100 when compressor kicks in. From the message ive read (thanks a lot guys!) looks like 750 is too low?

by the way, ung iacv ko daw parang sunog na (ung part na parang may electrical) though gumagana pa naman but visible na ung parang burned/blackened look........is this still ok? i asked the mechanic kung pde yun lang ung parang electrical palitan, he said buo daw yun......any thoughts how much this would cost?

thanks!

[speedyfix]

idle up sensors can range from 6k bnew all the way to 15k depending the engine and car in question.

[stormbringer]

Mga sirs!!!! wla sanang matatawa ha? san ko ba makikita yung throttle body at ung idle control ba yun? ganito din ang problem ng 94 galant ko. pag naka a/c at naka PARK and NEUTRAL (matic kasi) ok lang ang idle nya. pero pag nilagay ko na sa DRIVE, start na sya manginig lalo na pag inapakan ko ang preno. mwawala lang ang nginig pag nag accelerate ako. pero pag inapakan ko ang preno at tumigil nginig na naman sya. kaya ang ginagawa ko pag nakastop, nilalagay ko sa NEUTRAL para di manginig. di naman sya namamatay. pag start ko ng makina 1000rpm sya(w/out ac) pag nag on ako ng ac. bagsak ang rpm nya ng konting konti lang. pag nilagay ko na sa DRIVE, nginig na sya at bagsak ang rpm to 500-600rpm. paki help naman mga sir. Linis din ba sa TB ito at SERVO. pls help. thanks

[JunBargas14]

to all tsikoters, i would like to share may problem regarding my civic lxi 99 with the same idle problem especially when aircon is on.I have check & clean my servo but the same problem still. I need your help.

Pag inaangat ko yung tension wire ng
spurplug 1, nagrereact ang makina,dinig mong nahihirapan
same with spurplug 3 and 4
but not with spurplug 2. Kung iaangat ko spurplug 2, parang wala lang.
Ive checked my HTW and ok naman.Replaced new spurplug.
Is it possible na yung distributor ko problema kasi wala siyang naiidistribute sa spurplug 2 ko?

Anybody experienced thesame thing?
Please help.
Thanks in advance.

[bambino]

kung walang response ang cyl#2 ,do a compression test .
civic 1.5 compression is around 150 psi.

[weisshorn]

to all tsikoters, i would like to share may problem regarding my civic lxi 99 with the same idle problem especially when aircon is on.I have check & clean my servo but the same problem still. I need your help.

Pag inaangat ko yung tension wire ng
spurplug 1, nagrereact ang makina,dinig mong nahihirapan
same with spurplug 3 and 4
but not with spurplug 2. Kung iaangat ko spurplug 2, parang wala lang.
Ive checked my HTW and ok naman.Replaced new spurplug.
Is it possible na yung distributor ko problema kasi wala siyang naiidistribute sa spurplug 2 ko?

Anybody experienced thesame thing?
Please help.


Thanks in advance.

Check kung may spark ang nr. 2 spark plug. Pwede mo tanggalin ang spark plug habang patay makina. Kabit high tension wire at idikit ang body ng spark plug sa ground, start ang makina. Dapat makita mo ang apoy sa dulo ng spark plug. Kung walang apoy ang problema ay ang high tension wire kung ok ang distributor. Kung may spark naman so hindi sa electrical ang problema, possible na may compression problem ang cylinder nr 2. Check tappet clearance of intake and exhaust valves ng cyl nr 2. Baka lang ayaw na mag sara (tukod, walang clearance). Do compression test kung ok ang tappet clearance.

Sana makatulong.

[Jakk]

ganyan din problema ng friend ko, Mazda kotse nya kung ano ano na pinalitan nya tapos dinala sa casa check-up ng mga sensors pati timing wala nakita, hangang nagsawa sya isang gabi naisipan buksan ang hood habang buhay makina yon nakita nya may tumatalon na kuryente don sa tension wire nya, try nyo muna buhayin kotse nyo na walang ilaw para kitang kita nyo kung merong ganitong problema. baka makatulong po to..:2thumbsup:

[burjegol]

to all tsikoters, i would like to share may problem regarding my civic lxi 99 with the same idle problem especially when aircon is on.I have check & clean my servo but the same problem still. I need your help.

Pag inaangat ko yung tension wire ng
spurplug 1, nagrereact ang makina,dinig mong nahihirapan
same with spurplug 3 and 4
but not with spurplug 2. Kung iaangat ko spurplug 2, parang wala lang.
Ive checked my HTW and ok naman.Replaced new spurplug.
Is it possible na yung distributor ko problema kasi wala siyang naiidistribute sa spurplug 2 ko?

Anybody experienced thesame thing?
Please help.
Thanks in advance.

Tol,
try mo muna, tangalin mo ang spark plug 2 after running the engine for a while. tingnan mo kung basa ang spark plug, meaning, hindi sumusunog ang cylinder 2, i.e, walang koryente tamatakbo sa spark plug mo. To confirm, kabit mo ang high tension wire sa spark plug then crank the engine. see kung me makikia kang spark sa spark plugs.

For those who have problem re idling of their vehicle pag nag on ang A/C, definitely ang idle up valve nyo is the culprit. di siya bumibigay ng tamang rpm pag nag on ang A/C. Normally, sa idle, 800 to 900 rpm lang pag walang A/C. Pag nag on ang aircon, tata-as iyan sa mga 1000 to 1100 rpm. sa mga carburetor type, check kung gumagana ang tukod sa carburetor to increase the rpm pag on ang A/C. sa EFI engines, check kung bumibigay ng by pass air sa throttle body.

Sa nag post na 1000 rpm ang idle speed niya then tumata-as sa 1400 rpm, tol, baligtad ata? baka 1000 rpm mo naka n ang air con then pag nag release ang compressor clutch, tata-as siya to 1400 rpm? if so, masyado mata-as idling mo at, baka pinirmis iyan ng mekaniko para hindi mamatay ang makina pag on ng air con.
Hope this helps.

[burjegol]

to all tsikoters, i would like to share may problem regarding my civic lxi 99 with the same idle problem especially when aircon is on.I have check & clean my servo but the same problem still. I need your help.

Pag inaangat ko yung tension wire ng
spurplug 1, nagrereact ang makina,dinig mong nahihirapan
same with spurplug 3 and 4
but not with spurplug 2. Kung iaangat ko spurplug 2, parang wala lang.
Ive checked my HTW and ok naman.Replaced new spurplug.
Is it possible na yung distributor ko problema kasi wala siyang naiidistribute sa spurplug 2 ko?

Anybody experienced thesame thing?
Please help.
Thanks in advance.

Tol,
try mo muna, tangalin mo ang spark plug 2 after running the engine for a while. tingnan mo kung basa ang spark plug, meaning, hindi sumusunog ang cylinder 2, i.e, walang koryente tamatakbo sa spark plug mo. To confirm, kabit mo ang high tension wire sa spark plug then crank the engine. see kung me makikia kang spark sa spark plugs.

For those who have problem re idling of their vehicle pag nag on ang A/C, definitely ang idle up valve nyo is the culprit. di siya bumibigay ng tamang rpm pag nag on ang A/C. Normally, sa idle, 800 to 900 rpm lang pag walang A/C. Pag nag on ang aircon, tata-as iyan sa mga 1000 to 1100 rpm. sa mga carburetor type, check kung gumagana ang tukod sa carburetor to increase the rpm pag on ang A/C. sa EFI engines, check kung bumibigay ng by pass air sa throttle body.

Sa nag post na 1000 rpm ang idle speed niya then tumata-as sa 1400 rpm, tol, baligtad ata? baka 1000 rpm mo naka n ang air con then pag nag release ang compressor clutch, tata-as siya to 1400 rpm? if so, masyado mata-as idling mo at, baka pinirmis iyan ng mekaniko para hindi mamatay ang makina pag on ng air con.
Hope this helps.