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Car Forum / Hyundai Cars / August 200894 excel suddenly shut off while driving
I was cruising along at 45mph and my 94 excel shut off without warning. It would not start back up, but cranked strong. I eliminated lack of fuel as a possible problem. I checked for spark. No Spark. After further investigation I discovered a blown MPI fuse. I replaced the fuse, the car tried to start but the MPI fuse blew again. I can't move the car to get a diag. I think its either the coil or the MPI relay. Can anyone help? What would make the MPI fuse blow? Look for wiring shorted to the body of the car. Power from this fuse goe through several harnesses and powers several items, so you'll need to wor at narrowing down the short. The fuse controls power to the ECM, the EC relay, fuel pump, fuel injectors, purge solenoid, EGR solenoid, and heate oxygen sensors. - Message posted using http://www.talkaboutautos.com/group/alt.autos.hyundai More information at http://www.talkaboutautos.com/faq.htm > Look for wiring shorted to the body of the car. Power from this fuse goes > through several harnesses and powers several items, so you'll need to work [quoted text clipped - 5 lines] > Message posted usinghttp://www.talkaboutautos.com/group/alt.autos.hyundai/ > More information athttp://www.talkaboutautos.com/faq.html I tried disconnecting the alternator to see if bypassing it might eliminate it as a problem, the fuse did not blow this time & the car started briefly, then I heard a clicking noise under the dash & it shut off. I re-connected the alt. and it did the exact same thing. I tried starting 3 times with the same result. I was able to pin-point the clicking noise. I think it is the main relay, but I have to check the manual to be sure. Could it be bad? My Wife bought this car new 14 Yrs. ago and it has been an excellent machine. It only has 120,000 miles on it so I plan on keeping it for a long time to come. I will continue to research. > > Look for wiring shorted to the body of the car. Power from this fuse goes > > through several harnesses and powers several items, so you'll need to work [quoted text clipped - 16 lines] > miles on it so I plan on keeping it for a long time to come. I will > continue to research. The Relay in question is on the far left side under the dash & fastened with a screw. That is indeed the ECM relay, and it could indeed the problem, but once th fuse blows, regardless of why, the relay will click off, causing a th clicking you've already heard - Message posted using http://www.talkaboutautos.com/group/alt.autos.hyundai More information at http://www.talkaboutautos.com/faq.htm > That is indeed the ECM relay, and it could indeed the problem, but once the > fuse blows, regardless of why, the relay will click off, causing a the [quoted text clipped - 3 lines] > Message posted usinghttp://www.talkaboutautos.com/group/alt.autos.hyundai/ > More information athttp://www.talkaboutautos.com/faq.html I went on the Hyundai web site but I could not find an ECM relay. I was able to enter the part # and it came up as a "power relay". Is the ECM relay & the power relay the same thing!? Nearly any relay can be described as a power relay. If my memory serves the ECM relay has about 6 to 8 terminals - Message posted using http://www.talkaboutautos.com/group/alt.autos.hyundai More information at http://www.talkaboutautos.com/faq.htm > Nearly any relay can be described as a power relay. If my memory serves, > the ECM relay has about 6 to 8 terminals. > > -- > Message posted usinghttp://www.talkaboutautos.com/group/alt.autos.hyundai/ > More information athttp://www.talkaboutautos.com/faq.html I believe it is indeed the ECM relay, it has 8 terminals and all my research supports this conclusion. I'll check it if I can but I'm pretty sure the ECM relay is not supposed to "rattle " . Thanks so much for your in-put! |
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