ok, so i finnished installing a s5 motor in a s4 car and it wont start... well it does sort of. i turn it on then it automaticly revs to about 4 or 5 thousand rpms then it just shuts off all in about 3 seconds... does anybody have an idea what might be doing this....

 

It could have something to do with the fact that you installed an s5 engine in an s4 car. How did you stall the engine, s4 front cover and sensors on s5 block, hacking wire harness, standalone etc?

john ny

 

You're going to have to give us a little bit more info that just that...
Other than I can say your engine is severely out of tune and after the cold-start procedure the ECU does, it can't keep it running...

 

the only thing i did was take out the old engine and install the new and as for the wire harness i had to splice some stuff but i do know that i am getting fuel through the hoses but i don't know if i have them going to the right spots. also just for some extra information my boss did get it running for about two minutes but then it died on him...

 

if you are using a jspec engine.......the fuel lines are reversed on the series 4 tii. I am assuming the s5s are the same. We would need a diagram of which wires you spliced in order to help you.


john ny

 

Please use real titles that describe your problem instead of useless titles like "Need Help".

You are much more likely to get a response that does actually help when you put the problem in the thread title.

A good thread title for this thread would have been: "S5 motor in S4 car and it won't start" instead of "need help"

And it sounds like you have a vac leak.