PROBLEM with B16A

FORDRACING · Posted: Fri Jul 04, 2008 9:04 am Post subject: PROBLEM with B16A

Hey fellas, i have a 98 SiR, I getting an occasional problem, not sure what it is. Generally the a car will idle smooth and nice with a constant rpm, then all of a sudden the idle will just drop to the 600 + rpm range. This morning while on my way to work i stopped at a traffic light and the idle dropped low and then the engine shut off and the next traffic light it started to idle real low again and was about to shut off again but i revved a bit. The ting it, most of the time the car works just fine, this just happens now and again. not everyday.

ek4ever · Posted: Fri Jul 04, 2008 9:08 am Post subject:

get a diagnostic done. Could be fuel filter, fuel pump or ignition system including plugs. Experienced this once and it was the fuel filter...badly clogged

FORDRACING · Posted: Fri Jul 04, 2008 9:15 am Post subject:

thanks bro, wouldn't doubt just bought the car about a mth ago did't get the time to do a complete service as yet. any more suggestions.

g unit · Posted: Fri Jul 04, 2008 5:51 pm Post subject:

service ur injectors (which would include changing out ur fuel filter)

FORDRACING · Posted: Mon Jul 07, 2008 7:41 am Post subject:

yeah that last owner said the injectors was serviced 2 mths prior to purchase, still not ruling it out.

crazybalhead · Posted: Tue Jul 15, 2008 11:22 am Post subject:

Might also be the TPS, or the idle air control valve. Disconnect the TPS and see if the contacts are dirty. clean it out with some contact cleaner anyway.

FORDRACING · Posted: Tue Jul 15, 2008 11:27 am Post subject:

cool thanks man. changed plugs and fuel filter this weekend still getting the problem now and again. will check tps and idle air control valve, might also re calibrate the tps one time.

red_dragon · Street 2NR Joined: 08 Apr 2004 Tech posts: 84 My 2NRide:

to add to CHB

check the idle screw in the TB

u getting any check lights is it ECU Stock ?

FORDRACING · Posted: Tue Jul 15, 2008 1:21 pm Post subject:

stock ecu no checklights. dred the ting that makes me think it is a sensor or it is electrical is that it something that is not constant but more intermittent. I also recognised that when idling funny(low) , all of a sudden like it would just re gain a proper idle and idle smooth.

red_dragon · Street 2NR Joined: 08 Apr 2004 Tech posts: 84 My 2NRide:

u check the idle motor yet ?

FORDRACING · Posted: Tue Jul 15, 2008 1:53 pm Post subject:

nah didn't get chance to rally hunt the problem down but i think it working, i had the car idling switched on the low beams idle was fine switched on the high beam idle was fine turn the steering wheel idle was fine. so i guess it supposed to drop not so if the idle motor not functioning properly

allblacks · Posted: Tue Jul 15, 2008 3:12 pm Post subject:

That exact ting used to happen to my 98 SiR. Changed the IACV and that helped.

EG_vtec · Posted: Tue Jul 22, 2008 10:31 pm Post subject:

FORDRACING · Posted: Wed Jul 23, 2008 10:17 am Post subject:

thanks bro, i changed the fuel filter and plugs and the problem not as bad again, but still didn't get around to checking out the IACV as yet.

pycho · Posted: Thu Jul 24, 2008 8:51 am Post subject:

is good to check your spark plug as well, there are several contributing factors that can cause an idle problem. i once saw some one brakes booster was bad and it was giving that same trouble.

FORDRACING · Posted: Thu Jul 24, 2008 2:41 pm Post subject:

by the way at what rpm should i be idling at its an automatic ek 4

g unit · Posted: Thu Jul 24, 2008 5:44 pm Post subject:

check ur car manual, shud hav the RPM car should be at whether in P, R, N or D.

i am assuming a manual came wit ur car.

zacknolden · Joined: 29 Apr 2008 Tech posts: 0 My 2NRide:

Does changing the IACV would make things fine? I am quite having his problem yesterday.
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FORDRACING · Posted: Fri Jul 25, 2008 8:24 am Post subject:

nah boy didn't get the manual, need to get one and also a service manual.

prakash · Posted: Sat Jul 26, 2008 9:54 am Post subject:

DID YOU WORK ON THE IACV, LET ME KNOW HOW IT TURNED OUT....