Re: '93 Geo Prizm (Toyota 1.6l) emissions... High NOx and EGR valve?

Cory Dunkle wrote:


The 1600cc 4AFE engine will locate the EGR next to the intake runner for #1 cylinder, facing the passenger compartment (if it has an EGR). The passageway feeding the EGR is partly integrated into the intake manifold with the remainder being a passageway through the cylinder head itself to #1 exhaust. No external delivery plumbing. Timing for an EGR fitted model is 10BTDC with the E1 and T1 terminals in the diagnostics access connector jumpered. There should be a tune-up specifications sticker on the underside of the hood or elsewhere in the engine compartment. Do not try to set the timing without the E1/T1 jumpered.
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- Philip




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