87Jassic Posted September 23, 2013 Report Share Posted September 23, 2013 i have an 86 conquest that occasionally starts and then two seconds later dies. im guessing the ecu presets let it start but when the ecu switches over to the actual sensor readings its not seeing what it wants to... the part that throws me off the most is the fact that it is soooo intermittent. i started it today and it idled great and revved well enough to do a burnout. im baffled here. a couple more details. im really busy i can put my hands on the car every other week and i apologize for that inconvenience. so far i have replaced the fuel filter, injectors, injector plugs, distributor,(maf(not new)) and ignighter box. fuel pressure is excellent by the way. and so is vacuum when it idles. the car has 67,xxx original miles im just looking for a list of things to test and check. thanks guys for all the help! Link to comment Share on other sites More sharing options...
importwarrior Posted September 23, 2013 Report Share Posted September 23, 2013 If you figure this out please post the fix. Thanks. Link to comment Share on other sites More sharing options...
87Jassic Posted September 23, 2013 Author Report Share Posted September 23, 2013 trust me i try to help everyone as much as they help me i got your back guys Link to comment Share on other sites More sharing options...
iGSR_VR Posted September 23, 2013 Report Share Posted September 23, 2013 Hello, am having the same problem with my 86 I was going to start a post but, Lets figure this out toghter I have an 86 51kNew Fuel Pump Walbro 255New Fuel Filtergas Tank cleaned out and sealedGas line flused.New Head from Dad,New Water Pump Now when I start the car it dies, unless i keep giving it gas am currently running the 86 Triliogy Injectors Now, Heron tried a fix for me in the mean time, he did a jump from one injector cable to the other. Am now able to start the car and it idles great but I die out after 3000 RPM I have changed the ECU and nothing, so dont chnage the ECU yet. I belive its either the injector, one bad injector clip, and both on mines are new by the way but you never know. Or an electircal problem. I will post pics tonight or tommorow off the jump wire trick Heron did this maybe this will work for you in the meantime till we get both are cars running probally. Link to comment Share on other sites More sharing options...
87Jassic Posted September 23, 2013 Author Report Share Posted September 23, 2013 i can keep my car idling at wide open throttle but its like at 450 rpm... it seems like if the injector wires were to touch each other or ground you would kill an injector driver. have you switched the injector wires? i already changed ecu's does anybody have an 86 ecu pinout?? Link to comment Share on other sites More sharing options...
iGSR_VR Posted September 23, 2013 Report Share Posted September 23, 2013 Dont know but it seems to be there both driving of one driver the way i have it set-up Right Now. So its either the injector clip or something electrical Link to comment Share on other sites More sharing options...
iGSR_VR Posted September 23, 2013 Report Share Posted September 23, 2013 Another thing I haven't tried is the Orignal 86 Injectors there in the back seat. I take out the new injectors tonight and try the originals. I'll keep you posted Link to comment Share on other sites More sharing options...
Shelby Posted September 23, 2013 Report Share Posted September 23, 2013 check for batt power to both inj clips , each inj has it's own ballist resistor , i'd not advice connecting the two togather with one wire Link to comment Share on other sites More sharing options...
iGSR_VR Posted September 23, 2013 Report Share Posted September 23, 2013 Where are the ballist resistor located? Link to comment Share on other sites More sharing options...
iGSR_VR Posted September 23, 2013 Report Share Posted September 23, 2013 Thanks for your help Shelby, I will look into this tonight. Link to comment Share on other sites More sharing options...
87Jassic Posted September 23, 2013 Author Report Share Posted September 23, 2013 did you get a pm about the location of the resistors? i need to know where they are as well as the ohm reading i should be seeing. Link to comment Share on other sites More sharing options...
Shelby Posted September 24, 2013 Report Share Posted September 24, 2013 inj resistor block in on pass side rad suport in front of air filter houseing , it's a two resistor block one wire going in and two wires comeing out,, both resistors are 6 ohm rsistors , in a pintch you can use any coil ballist resistor to get by substituteing for a bad resistor untill proper rssistor pac is located ,, the resistors drop the batt voltage down from 12 volts to aprox 6 volts durring inj operation,,but when testing you will see 12 volts out because there is not load on the circirt all years are the same Link to comment Share on other sites More sharing options...
Shelby Posted September 24, 2013 Report Share Posted September 24, 2013 guys i feel i need to say this one more time stop replaceing parts in an effort to find a problem,, test and troubleshoot,, only replace a part if it fails testing , all you are doing is wasteing money and time,, odds are real good the problem you both ahave is a bad or broken connection , esp if it works on day and not the next ,,cleaning and instecting connections costs you nothing but a littole of your time and there is NO SUCH thing as a wasted time cleaning connection even if it did not fix your problem Link to comment Share on other sites More sharing options...
ucw458 Posted September 24, 2013 Report Share Posted September 24, 2013 Just a shot in the dark......... if you jiggle the key in the ignition will the motor shut down? Try it in all directions. I'm wondering if you have a bad connection in the ignition switch. Link to comment Share on other sites More sharing options...
87Jassic Posted September 24, 2013 Author Report Share Posted September 24, 2013 ill keep everyone posted on my progress when i get my hands on the car. thanks for all the suggestions! Link to comment Share on other sites More sharing options...
iGSR_VR Posted September 24, 2013 Report Share Posted September 24, 2013 Thanks Shelby I have yet to test the resitors I try and do it today or tommorow, I'll keep you guys posted Link to comment Share on other sites More sharing options...
Shelby Posted September 24, 2013 Report Share Posted September 24, 2013 Just a shot in the dark......... if you jiggle the key in the ignition will the motor shut down? Try it in all directions. I'm wondering if you have a bad connection in the ignition switch. good idea i have found about 4 bad ign swts over the years ,not often but often enought to make sure you test check them Link to comment Share on other sites More sharing options...
iGSR_VR Posted September 24, 2013 Report Share Posted September 24, 2013 Did a little trouble shooting with Shelby Will try again soon Shelby Thanks for your help Also noticed there is a wierd noise coming from the ECU kick panel when I turn the car on ( WiERD ) Link to comment Share on other sites More sharing options...
87Jassic Posted September 25, 2013 Author Report Share Posted September 25, 2013 i know you said not to shelby but the ignition switch was one of the first things i replaced.(forgot to add that in there) Link to comment Share on other sites More sharing options...
Shelby Posted September 25, 2013 Report Share Posted September 25, 2013 i know you said not to shelby but the ignition switch was one of the first things i replaced.(forgot to add that in there) i did not say not to replace a part what i said was try to prove a part is bad first do your self a favor and keep the old swt Link to comment Share on other sites More sharing options...
iGSR_VR Posted October 3, 2013 Report Share Posted October 3, 2013 UPDATE**** I figured out my problem it was the injectors she is know screaming like beast Boosting 7 Pounds Link to comment Share on other sites More sharing options...
importwarrior Posted October 3, 2013 Report Share Posted October 3, 2013 what was the problem? clogged? Link to comment Share on other sites More sharing options...
87Jassic Posted October 9, 2013 Author Report Share Posted October 9, 2013 were they clogged or was the resistor bad? Link to comment Share on other sites More sharing options...
Shelby Posted October 12, 2013 Report Share Posted October 12, 2013 inj resistor was good I walked him thru testing that over the phn Link to comment Share on other sites More sharing options...
87Jassic Posted April 27, 2014 Author Report Share Posted April 27, 2014 okay so after a busy year of all kinds of nonsense i am on the path to fixing my quest. will keep this thread alive if it will help anyone else. Link to comment Share on other sites More sharing options...
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