Running Issues

[4AGE_Keto]

Ok guy here's the story I've got a 4AGE bigport in my KE70, it has had the engine in there running 1.5 years ago then we pulled it out. Have recently got it back in and running. When we first started it there were some issues starting, got it sorted turns out the coil was not happy and we changed it and it was running great for about an hour... We jacked up the back end to put the new tailshaft in and wire the thermo fan back in and now it doesn't want to run.. We unplugged the MAP and it started and ran, rough but it ran, would not rev over 4500 rpm. When we plug the map in when it's running it idles great won't rev and then it stalls about 4 seconds after reconnecting it. It almost sounds like misfire and not getting enough spark which was the problem before. I tested the relays and fuses and they are all okay. I can't work it out and the manual keeps leading back to electrical problems as to why it won't work..

 

Bought a new map and that didn't fix it. thought about getting a new TPS but I keep ending up with the same conclusion, Igniter or spark problems, Any ideas or help would be greatly appriciated because I want to get it running again and driveable.

[kiahn]

i had similiar problem, check you have the injectors wired up correctly, ie. resistors etc

[4AGE_Keto]

Ok having a good look at the car it isn't actually miss firing. The new map does the same as the old map just cuts it out after idleing great for 5 seconds... I'm starting to think it may be the TPS.. Is anyone able to confirm it ?

 

Reading about the TPS apparently it also helps in telling the ECU how much fuel to dump in via the degree of the butterfly. So this is the reason I am starting to think that it may be dead.

[cinky]

hey mate there is a couple of guys on here that will help you diagnose the tps i had a thread here a while back and the helped me i'll try and find it

[cinky]

xxx TPS - throttle position sensor

you need to reset this, start off with it turned fully anti clockwise and set your idle and throttle stop screw THEN set your TPX by putting a 20 thou feeler gauge in between the throttle stop screw and the part it comes down on, it should come out of idle mode and into throttle mode when you put the gauge in there and when you take it out it should return to idle xxx

 

hope this helps

[4AGE_Keto]

Replaced the TPS. Didn't fix a thing... I'm now replacing the leads, rotor button and dizzy cap. got a slight change in idle, Idled a little smoother, with a new coil-dizzy lead. Just have to get the rest now. I'm really hoping that this fixes it because this is just getting annoying and I need it on the road so my girl has the family car while I'm at work.

[ke70dave]

hey mate, have you done a diagnostic on your ECU?

 

if not id start there, hook up a check engine light and see what codes are being thrown up.

 

its cheaper than replacing everything!