Check the hose clips for tightness and examine the trunking for any cracks or splits and next every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best quirk to find a leak is to have the engine supervision and warm and later spray lighter gas /propane or brake cleaner with reference to each joint in turn. If the engine rev s stirring you ve found your leak.
Its also worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not a hundred percent pump will all consequences in insufficient fuel being delivered to the engine. Might with be worth cleaning out the idle swiftness control motor / valve as these acquire clogged going on like carbon and some brake cleaner washed through helps pardon things off.
Hello the TPS does have an effect on switching the car into idle mode consequently I'd suggest to make positive the throttle plate is 100% closed and not slightly beached behind carbon. and after that accustom yourself the TPS so that the IDL attach is continuous to the E2 fasten with the throttle is closed, and edit circuit subsequent to the throttle is just cracked. Don't upset just about any voltages, the IDL read is the in fact important one.