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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / November 2006Computer Code for 93 escort- what does this mean????
Hi, I have retreived the codes for a 93 ford escort with fuel injection and I do not understand the translation. The message that I get is "pulse width is wider than expected". That is not actually verbatum, but that's the drift. I have replace the O2 sensor out of desperation, but I still get the same coded error. Any ideas where I should be looking? Thanks > Hi, > I have retreived the codes for a 93 ford escort with fuel injection and [quoted text clipped - 4 lines] > Any ideas where I should be looking? > Thanks Does the code say what part's pulse width is too wide? If it is the fuel injector's, that would been that the injector is spraying for too long. This would be a fault somewhere between the lookup table and the injector spray head. Perhaps the injector return spring is old - obviously - and weak and so it won't close as fast as the ecu is expecting. Matthew Thanks for the lightning speed. I believe that the pulse width is refering to the injector and I interpereded the message the way you just described. I did not know why the pulse width would be longer than expected. So you think that it might be a return spring. Should I just replace the injectors? > > Hi, > > I have retreived the codes for a 93 ford escort with fuel injection and [quoted text clipped - 13 lines] > > Matthew Ok All, I apologize for the vague question-here are the details: The car in question is a Ford, LX escort 4 door wagon. It has about 80,000 miles. The actual codes are retreived with a INNOVA Ford Code Reader. Here are the actual codes and definitions according to book that came with reader. 1) Code 181 Test condition C Fault code definition: Fuel system at rich adaptive limit at partial throttle /system lean 2) Code 186 Test condition C Fault code definition: Fault in injector pulse width circuit / high I hope this helps because I could use some advice. Thanks > > Hi, > > I have retreived the codes for a 93 ford escort with fuel injection and [quoted text clipped - 13 lines] > > Matthew > Ok All, > I apologize for the vague question-here are the details: [quoted text clipped - 13 lines] > > I hope this helps because I could use some advice. Still no engine info, I'll assume 1.9 liter engine due to the LX wagon option. If you were to clear the codes and drive the car, does the check engine light (MIL) come on fairly quickly, or does it wait to come on until you are accelerating hard or highway driving? If quickly, I would check the rubber air intake tube for cracks that would allow air to bypass the MAF sensor. If the MIL lights after hard or longer driving, I would suspect the MAF sensor is in need of cleaning or replacement. I'm ruling out the O2 sensor at this moment since it is new, though it could also cause this problem. Also a slow or biased O2 sensor would likely set 'slow switching' codes in the 130's code range. I don't think you have one bad injector or you would have complained about misfiring/poor drivability. You didn't leave that part out, did you? I don't think you have 4 bad injectors either; that's just a 'what are the odds' kind of thing... Other stranger possibilities would be accompanied by drivability symptoms, which there apparently are none. So... make sure the rubber intake tube is in good shape. Then remove the MAF sensor from the aluminum housing it is bolted atop. There should be two tamperproof torx screws holding it down, so you will need to get a cheap TP Torx bit set at Autozone or equivelant. Look at the plastic column that 'hangs down' from the metal sensor. Shine a light up and into it and look for two parallel small wires being held up by goalpost shaped supports. Clean these two wires with blasts of brake clean or electric parts cleaner. Try not to make any contact (other than chemical) with them. Repeat this until the wires are a clean, platinum type of color. Clear codes and retest. I have heard reports along with a model-wide Ford TSB that say cleaning MAFs is not a proper fix. The good thing is it costs nothing to do. If you get any improvement then you are on the right track. If the codes return in a few weeks you can then spring the $100 on a new MAF sensor, more confident in your decision. It is highly effective on certain Toyota models which use a very similar design, and I have been sucessful with a few Fords as well, OBDII and older. Toyota MDT in MO Thanks Comboverfish, You are correct in assuming that there are no driving problems. The car idles a little rough, but not too bad. The reason that I did a code retreival is because the engine light came on. > > Ok All, > > I apologize for the vague question-here are the details: [quoted text clipped - 57 lines] > > Toyota MDT in MO Comboverfish, I checked the MAF and it seems to have solved the problem. I cleaned it with some electronic cleaner and then took the car on the freeway-no engine light. Thanks for the help. > > Ok All, > > I apologize for the vague question-here are the details: [quoted text clipped - 57 lines] > > Toyota MDT in MO lwatson Wrote: > Ok All, > I apologize for the vague question-here are the details: [quoted text clipped - 37 lines] > > > > Matthew Your code reader is not giving you the true definitions on the codes. 181 is a fuel control code. But your main problem is code 186. Code 186 is for the mass air flow sensor circuit voltage . With engine warmed up check the voltage from MAF sensor. Specs are. At idle 0.8 volts 20 mph 1.0 volts 40 mph 1.7 volts 60 mph 2.1 volts. If not within specs the good book says replace the maf sensor. You can try cleaning but I do not think it will help. Also notice the code says sensor circuit so check the wiring and plug in and make sure the pcm is getting the voltage reading. And make sure you do not have any air leaks in air intake hoses like lose clamps hoses and everything hooked up. Should be pcm pins 40 and 60 for voltage test. Good luck MT  SignatureMT-2500 http://www.automotiveforums.com Thank you MT-2500, I'll check those things out on Sunday and clean the MAF sensor. I'll let you know the outcome. > lwatson Wrote: > > Ok All, [quoted text clipped - 66 lines] > > http://www.automotiveforums.com MT-2500, Do you have any suggestions for checking voltage of MAF while car is moving? How do I know if the voltage is correct at 60 mph? Thanks again. > lwatson Wrote: > > Ok All, [quoted text clipped - 66 lines] > > http://www.automotiveforums.com >Hi, >I have retreived the codes for a 93 ford escort with fuel injection and >I do not understand the translation. >The message that I get is "pulse width is wider than expected". That >is not actually verbatum, but that's the drift. I have replace the O2 >sensor out of desperation, but I still get the same coded error. Pulse width of WHAT? Is it by any chance... the crankshaft position sensor pulse that it's referring to? --scott Signature"C'est un Nagra. C'est suisse, et tres, tres precis." Any chance of letting us knowethe actual code? > Hi, > I have retreived the codes for a 93 ford escort with fuel injection and [quoted text clipped - 4 lines] > Any ideas where I should be looking? > Thanks > Any chance of letting us knowethe actual code? Shep, that's crazy talk! If you are asking for info like 1.8L or 1.9L engine and the *exact* code, then I think you are more interested in stirring trouble than helping. For shame! Toyota MDT in MO Shep Wrote: > Any chance of letting us knowethe actual code? > > Hi, [quoted text clipped - 15 lines] > ----= East and West-Coast Server Farms - Total Privacy via Encryption > =---- Shep You have to use the old direct approach to get info and promise not to tell anybody else what the info is. It is sometimes CIA info. :grinyes: :grinno: :lol: Put it to them something like this. Tips on getting a good answer to your questions. People trying to answer your question do not have a crystal ball. So give them all of the info you have like year make and model and engine and transmission and mileage. Also cars engine and transmission service history or any recent repairs or problems. Also a description of your problem and what it is doing or not doing. If you have codes give up the code no. And remember a code does not say replace the part but only points to the problem that you have to check out. So to better help you give up all of the info you have on it. MT SignatureMT-2500 http://www.automotiveforums.com MT-2500, I took your advice and checked the MAF and it was quite sooty on the sensor. I cleaned the wires off with some electronic contact cleaner and then took it on the highway. (the onramp is where the engine light would come on). So far no engine light!!!!!! Also, the car is running better with more pickup. I'm pretty sure that everyone in this group that said to clean or check the MAF nailed it. I'll post tomorrow after some more freeway time. Thanks. > Shep Wrote: > > Any chance of letting us knowethe actual code? [quoted text clipped - 44 lines] > > http://www.automotiveforums.com lwatson Wrote: > MT-2500, > I took your advice and checked the MAF and it was quite sooty on the [quoted text clipped - 64 lines] > > > > http://www.automotiveforums.com You are welcome and glad it helped. Sometimes the cleaning helps. Thanks for posting back how it went. Keep a good air filter on it and If a K&N filter go easy on the oil. SignatureMT-2500 http://www.automotiveforums.com Hell with my finger I am lucky to type what I did, I gotta tell you the lack of meaningful info posted these days is scary, is this where we are in this society, when a first year college student can't spell "collage" properly! Signaturemaxwedge http://www.automotiveforums.com |
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