Check the hose clips for tightness and examine the trunking for any cracks or splits and with all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best artifice to find a leak is to have the engine admin and hot and next spray lighter gas /propane or brake cleaner in relation to each joint in turn. If the engine rev s going on you ve found your leak.
Its moreover 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 every result in insufficient fuel physical delivered to the engine. Might then be worth cleaning out the idle rapidity govern motor / valve as these get clogged in the works with carbon and some brake cleaner washed through helps forgive things off.
Hello the TPS does have an effect on switching the car into idle mode for that reason I'd suggest to create determined the throttle dish is 100% closed and not slightly grounded in the manner of carbon. and subsequently familiarize the TPS thus that the IDL pin is continuous to the E2 glue later than the throttle is closed, and right to use circuit similar to the throttle is just cracked. Don't bother not quite any voltages, the IDL entry is the in fact important one.