no spark

[beaver]

if anyone can help me this would be greatly appriciated. Everything was working great untill I replaced the old fuel pump. once I installed the new walbro the car will start and run great untill I turn it off then it wont start again. There is no spark. so I unhook the negative battery terminal for a few minutes, there by resetting the ecu. It will then usually start and run again untill I turn it off, then the same again. ANY SUGGESTIONS

 

[Halsupramk3]

do you have a alarm system that may be turning off the spark or fuel?

 

[beaver]

do you have a alarm system that may be turning off the spark or fuel?

yes I have the stock 1989 toyota alarm system but that usually doesnt allow the starter to even turn over and Iknow that i have fuel pressure

 

[Halsupramk3]

may be a ground. It may heat up and not ground properly. Check the one and clean them on the intake above the back knock sensor and the one over on the passenger wheel well. Make sure the ground wire to the coil packs is in good shape.

 

[cjsupra90]

could just be coincedental with the change.

when it wount start, try wiggling or shaking the CPS plug and see if it then starts. if it does, then you need to either straight wire the CPS or change to a different plug.

This a common problem on Turbos, my thoughts are no to the additional heat in the area because of the turbo.

 

[suprahooked]

sounds like you need to check your wiring of the fuel pump