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Car Forum / Honda Cars / September 2006engine stalls on hard braking
this pertains to a 1998 honda civic LX, at, ac, 163000 miles: recently during the last few months whenever i'm travelling at between 20 and 40 mph and i've had to brake very suddenly and very hard, the engine stalls as soon as the car comes to complete stop. never used to do that before. engine starts up w/o any difficulty afterwards. a/c is NOT on when this happens. engine does NOT do this when i brake normally, i.e., non-panic stop. any ideas on what's causing this and what components to check? any advice would be greatly appreciated ..... tia. > this pertains to a 1998 honda civic LX, at, ac, 163000 miles: > recently during the last few months whenever i'm travelling at between [quoted text clipped - 6 lines] > advice would be greatly appreciated ..... > tia. have you had the ignition switch recalled? > > this pertains to a 1998 honda civic LX, at, ac, 163000 miles: > > recently during the last few months whenever i'm travelling at between [quoted text clipped - 8 lines] > > > have you had the ignition switch recalled? no, haven't had any recall on the ignition switch >>> this pertains to a 1998 honda civic LX, at, ac, 163000 miles: >>> recently during the last few months whenever i'm travelling at between [quoted text clipped - 10 lines] > > no, haven't had any recall on the ignition switch ok. there was a recall. if your ignition is defective, hard braking could be moving your key bunch about and upsetting an about-to-fail switch. go to the dealer and get the free recalled switch fitted - the problem should go away. > >>> this pertains to a 1998 honda civic LX, at, ac, 163000 miles: > >>> recently during the last few months whenever i'm travelling at between [quoted text clipped - 15 lines] > switch. go to the dealer and get the free recalled switch fitted - the > problem should go away. ok! thanks. i'll check out the other items on this thread as well, just on g.p., and take myself down to the dealer. thanks. > >>> this pertains to a 1998 honda civic LX, at, ac, 163000 miles: > >>> recently during the last few months whenever i'm travelling at between [quoted text clipped - 15 lines] > switch. go to the dealer and get the free recalled switch fitted - the > problem should go away. got the switch replaced, checked (i did) all vacuum lines, + the idle air control valve still having the same problem >>>>> this pertains to a 1998 honda civic LX, at, ac, 163000 miles: >>>>> recently during the last few months whenever i'm travelling at between [quoted text clipped - 17 lines] > got the switch replaced, checked (i did) all vacuum lines, + the idle > air control valve still having the same problem hmmm. does it stagger to a halt with the motor fighting against the brakes, or does the motor smoothly cut out? if the lockout clutch on the transmission is not releasing quickly enough, that could stall it. also check the idle speed is set correctly. basically, [with a fully warm engine] disconnect the iacv and adjust the idle screw to achieve 750 rpm. iacv's don't adjust too quickly, so if you stop too fast, maybe it's go too far to adjust and can't get there fast enough? [guessing] other than that, look for an electrical problem. is there any mechanical componentry floating about or loose connections under the dash that could be disrupting power to the ecu or ignition? any bad stereo installations? >> > this pertains to a 1998 honda civic LX, at, ac, 163000 miles: >> > recently during the last few months whenever i'm travelling at between [quoted text clipped - 10 lines] > >no, haven't had any recall on the ignition switch This could be a problem with the brake power booster having an air leak. Does the engine stall if you apply the brakes hard while stationary? > >> > this pertains to a 1998 honda civic LX, at, ac, 163000 miles: > >> > recently during the last few months whenever i'm travelling at between [quoted text clipped - 14 lines] > leak. Does the engine stall if you apply the brakes hard while > stationary? i'll check it out his weekend. thanks. > >> > this pertains to a 1998 honda civic LX, at, ac, 163000 miles: > >> > recently during the last few months whenever i'm travelling at between [quoted text clipped - 14 lines] > leak. Does the engine stall if you apply the brakes hard while > stationary? no, it does not stall when brakes are applied hard when car is stationary. > this pertains to a 1998 honda civic LX, at, ac, 163000 miles: > recently during the last few months whenever i'm travelling at between [quoted text clipped - 6 lines] > advice would be greatly appreciated ..... > tia. ---------------------------------- Are you sure your CHECK ENGINE light is functioning, and are there any CODES stored? 'Curly' > > this pertains to a 1998 honda civic LX, at, ac, 163000 miles: > > recently during the last few months whenever i'm travelling at between [quoted text clipped - 13 lines] > > 'Curly' 'check engine' light comes on fine when you go to start the engine and then it goes out (normal operation). no codes are stored. 'check engine' light does not come as part of this problem except after the engine has stalled (and the other lights are on as well) > 'check engine' light comes on fine when you go to start the engine and > then it goes out (normal operation). no codes are stored. 'check > engine' light does not come as part of this problem except after the > engine has stalled (and the other lights are on as well) Wonder if your dashpot, or throttle control is functioning right... Normally, the throttle is held open a bit for say appx 3 seconds or so before it goes to idle. The purpose is to prevent stalling on hard stops due to the throttle cutting off too quick. You should be able to get an idea if it's working by goosing the throttle up to 3k or so, and quickly releasing. It should take about 3 seconds or so to totally cut back to idle. If it cuts back almost instantly, I'd check the idle/dashpot controls. Just thought I'd mention this being as no one has yet.. MK >> 'check engine' light comes on fine when you go to start the engine and >> then it goes out (normal operation). no codes are stored. 'check [quoted text clipped - 12 lines] > controls. Just thought I'd mention this being as no one has yet.. > MK not on a fuel injected car with electronic idle air control. and with carburetted cars, it depends on the design - many didn't have dash pots at all. btw, the reason the motor takes time to drop to idle speed is because of the momentum of the rotating crankshaft, flywheel [etc.] mass - it's not a function of carburetion. > not on a fuel injected car with electronic idle air control. I was thinking the idle air valve would control that. But I couldn't remember if it was computer driven, or used a dashpot for a slow release. and with > carburetted cars, it depends on the design - many didn't have dash pots > at all. My 89 accord with a carb does. Has a section in the manual covering the "dashpot system". But it seems to be part of the throttle controller. > btw, the reason the motor takes time to drop to idle speed is because of > the momentum of the rotating crankshaft, flywheel [etc.] mass - it's not > a function of carburetion. Well, yes, the flywheel, etc adds to it, but in the case of my car, it's also a function of the carb. The dashpot keeps the throttle controller arm from fully extending too fast. In checking the manual, they state the proper time is 1-3 seconds. They say if it's less than 1 second, or more than 3 seconds, to inspect the throttle control valve, vacuum, etc. I was thinking even the EFI cars had some type of slow throttle return, even though it's probably using a different method to achieve it. I was thinking it was controlled by the computer via the IAC...? Maybe not though.. The "puter" manual I'm looking at now doesn't cover the EFI version, and my crappy haynes manual is out in the car.. I don't think it's normal for any of them to return to idle in less than 1 second. In the case of mine, they say it will, if the throttle controller/dashpot is not working right. So the flywheel inertia on it's own must not last too long.. BTW, the 1-3 second return on mine is from 3500 rpm maintained for 2-3 seconds, and suddenly released. MK > > 'check engine' light comes on fine when you go to start the engine and > > then it goes out (normal operation). no codes are stored. 'check [quoted text clipped - 12 lines] > controls. Just thought I'd mention this being as no one has yet.. > MK My 88 Tercel manual said that the throttle was held open to burn off fuel spray remaining in the intake manifold after the throttle suddenly closes. It was a CA and federal emissions component. It might have a different use in fuel injected cars, though. The idle screw is usually what prevents the stall. Even a modern car needs it set properly to avoid stalls. >> 'check engine' light comes on fine when you go to start the engine and >> then it goes out (normal operation). no codes are stored. 'check [quoted text clipped - 12 lines] > controls. Just thought I'd mention this being as no one has yet.. > MK not on a fuel injected car with electronic idle air control. and with carburetted cars, it depends on the design - many didn't have dash pots at all. btw, the reason the motor takes time to drop to idle speed is because of the momentum of the rotating crankshaft, flywheel [etc.] mass - it's not a function of carburetion. |
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