'91 accord f22a1 - no bottem end power?
05-09-2012, 05:15 PM
#53
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Re: '91 accord f22a1 - no bottem end power?
i havent seen anyone say head gasket for hard start and misfire when cold starts. or i havent seen anyone say the same thing for bog or loss of power.
05-09-2012, 05:18 PM
#54
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Re: '91 accord f22a1 - no bottem end power?
hey bro now that ive heard your video have you made sure that none of your injectors are leaking inside the cylinder?? its backfiring bro. sounds ignition related or fuel related also as could be ignition timing related.
05-11-2012, 02:11 PM
#55
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Re: '91 accord f22a1 - no bottem end power?
no, i havent tested anything yet. went over with new iacv and installed, expecting it to at least start and cold-idle, but instead got nothing. i only had some basic tools with me, so i just closed it up and came home. been working all week since, and havent been back over to mess with it.
so that's why im asking about the resistor location and for other ideas... so i can go over there and thoroughly go over it all in one shot. looks like im gonna have to dust off the manual and start digging...
definitely not leaking into the cylinders... at this point, they arent even putting out fuel at all. the h/g is old, but as far as i know, its fine. not leaking, boiling, or mixing fluids... no smoke problem. i dont run it hard either... and its just been setting for the better part of 3 years now. the car ran like it usually did when i drove across town at speeds of maybe 35 tops. i was there for several hours, went to leave, no start. the next day, it fired up, but wouldnt run after fast idle. iacv was making a humming/whining sound when key went on. after a year, i bought a new (used) iacv and put it on, only to find that there is now no fuel injecting.
so that's why im asking about the resistor location and for other ideas... so i can go over there and thoroughly go over it all in one shot. looks like im gonna have to dust off the manual and start digging...
definitely not leaking into the cylinders... at this point, they arent even putting out fuel at all. the h/g is old, but as far as i know, its fine. not leaking, boiling, or mixing fluids... no smoke problem. i dont run it hard either... and its just been setting for the better part of 3 years now. the car ran like it usually did when i drove across town at speeds of maybe 35 tops. i was there for several hours, went to leave, no start. the next day, it fired up, but wouldnt run after fast idle. iacv was making a humming/whining sound when key went on. after a year, i bought a new (used) iacv and put it on, only to find that there is now no fuel injecting.
05-11-2012, 02:50 PM
#56
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Re: '91 accord f22a1 - no bottem end power?
check fuses. make sure ecu has ground. check ground connections on the t-stat housing. run direct power to the pump by the relay and see if it turns on. if it does check main relay if relay is good then check ignition switch see if the relay is getting power from it. ive seen bad grounds make the same sound on the iacv or any solenoid power device on the vehicle
05-13-2012, 02:02 PM
#57
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Re: '91 accord f22a1 - no bottem end power?
i did look over fuses and fusable links... all look fine. pump is working and fuel rail has pressure.
where are the relays located?
where are the relays located?
05-13-2012, 07:22 PM
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Re: '91 accord f22a1 - no bottem end power?
the main relay is under your dash where the steering column goes. look up honda main relay the links i use are dead. but just take it out take a look at it. but make sure your getting power to all injectors. then test if you have ground at the injectors while cranking.
05-16-2012, 08:04 AM
#59
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Re: '91 accord f22a1 - no bottem end power?
alright, i'm not familiar with what exactly and egr is/does, but i'll give that a shot this week. i'll have to look in the service manual and find which vac. line it is. would that possibly generate the strange odor? if it seems like the problem, what would i need to do to fix it?
i dont have an oscilloscope... any way i can use a multi-meter instead?
as for fuel pressure and volume, it seems fine. once the car gets up to 2k or so, it runs pretty good. im no expert, but if it were a fuel delivery problem, wouldnt it be more prevalent at higher rpm, instead of the opposite? and keep in mind, the fuel delivery lines are brand new from the top of the pump to the fuel filter under the hood (including the filter itself). and when i connected the fuel pipe to the fuel feed line, it had enough pressure to leak around the fitting, through teflon tape, and i had to tighten it more to get it to seal. so it seems like the pump is working right, and the lines and filter are new. if its a fuel problem, i would guess it would be between the filter and engine (injectors maybe?).
the O2 sensor seems plausible. the only issue with that is that i've owned this car for around 6 years now. this problem i speak of has been an issue since i bought it. its not throwing a code for the sensor. i know they can start going bad, and cause problems, without actually throwing a code at first. but i would think that over 6 years, if the sensor was going bad, it would have done so by now and thrown a code. that is of course, if logic prevails.
anyway, ill look into the egr thing first. it just seems more likely to me. but if that doesnt pan out, ill turn my attention toward the fuel and O2 sensor... if there is anything i can do myself to troubleshoot it. i mean, how am i supposed to monitor the O2 sensor while im driving? i have mechanics tools, a volt meter, laptop... but no oscilloscope or anything like that.
i dont have an oscilloscope... any way i can use a multi-meter instead?
as for fuel pressure and volume, it seems fine. once the car gets up to 2k or so, it runs pretty good. im no expert, but if it were a fuel delivery problem, wouldnt it be more prevalent at higher rpm, instead of the opposite? and keep in mind, the fuel delivery lines are brand new from the top of the pump to the fuel filter under the hood (including the filter itself). and when i connected the fuel pipe to the fuel feed line, it had enough pressure to leak around the fitting, through teflon tape, and i had to tighten it more to get it to seal. so it seems like the pump is working right, and the lines and filter are new. if its a fuel problem, i would guess it would be between the filter and engine (injectors maybe?).
the O2 sensor seems plausible. the only issue with that is that i've owned this car for around 6 years now. this problem i speak of has been an issue since i bought it. its not throwing a code for the sensor. i know they can start going bad, and cause problems, without actually throwing a code at first. but i would think that over 6 years, if the sensor was going bad, it would have done so by now and thrown a code. that is of course, if logic prevails.
anyway, ill look into the egr thing first. it just seems more likely to me. but if that doesnt pan out, ill turn my attention toward the fuel and O2 sensor... if there is anything i can do myself to troubleshoot it. i mean, how am i supposed to monitor the O2 sensor while im driving? i have mechanics tools, a volt meter, laptop... but no oscilloscope or anything like that.
05-17-2012, 12:26 PM
#60
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Re: '91 accord f22a1 - no bottem end power?
Regular maintenance for an o2 sensor is every 100k, so you would likely be money ahead to replace it. These sensors are critical for smooth running and don't always throe the engine light, I had a similar problem on my 90 Accord DX which I bought new, it was missing badly at midrange after it warmed up.
I replaced the O2 sensor and the car ran like new, it has 228K. I was amazed. Good luck.
I replaced the O2 sensor and the car ran like new, it has 228K. I was amazed. Good luck.
05-19-2012, 06:14 PM
#61
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Re: '91 accord f22a1 - no bottem end power?
the main relay is under your dash where the steering column goes. look up honda main relay the links i use are dead. but just take it out take a look at it. but make sure your getting power to all injectors. then test if you have ground at the injectors while cranking.
as for the O2 sensor... i think im beyond a bad sensor at this point. a year ago, the car wouldnt stay running once warm, but now theres no pulse from the injectors, and no running at all. its probably due for a change, but i dont think its THE problem.
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