Check the hose clips for tightness and inspect the trunking for any cracks or splits and also all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best quirk to find a leak is to have the engine government and hot and next vaporizer lighter gas /propane or brake cleaner more or less each joint in turn. If the engine rev s occurring you ve found your leak.
Its plus worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a under the weather pump will all result in insufficient fuel subconscious delivered to the engine. Might as a consequence be worth cleaning out the idle readiness control motor / valve as these acquire clogged in the works taking into account carbon and some brake cleaner washed through helps free things off.
Hello the TPS does have an effect on switching the car into idle mode thus I'd recommend to make sure the throttle plate is 100% closed and not slightly grounded considering carbon. and subsequently familiarize the TPS thus that the IDL fix is continuous to the E2 attach in imitation of the throttle is closed, and entre circuit subsequently the throttle is just cracked. Don't upset about any voltages, the IDL door is the in fact important one.