its an 87 s4 what i have swapped the turbo counterparts and eliminated the rats nest however, im having a high idle issue and as soon as i get on the throttle the fuel gets cut off and will stumble back up if i let off the throttle. if i ease the throttle itll climb up to 4000 rpm and will not go any more... on the first start it idled at 1200 then increased to 2000....


it has a walbro 550 primaries, 660 secondaries... and the fpr is off the lim

any help would be great thanks. i need to get this running by sunday

 

its got the n332 ecu, low imp injectors, stock tmic, 318 boost sensor and 318 maf...


egr block off
acv block off
bac block off
airpump removed...
ratsnest removed along with solenoids....

 

Tps or afm. I had the same problem with an n/a car. Or, you could pull some codes.

 

Take the time to make sure the primary and secondary throttle plates are fully closed.

The thermowax/fast idle cam etc if not fed hot water can keep the primary plates open til the thermowax extends and sepreates the linkage from the fast idle cam. On a turboII you'd have to remove that metal inlet duct that bolts to the throttle body to see the plates.

Can''t check the timing til the rpms get below 1000 rpm.

I always assume everybody is bright enough to check to see if the throttle cable is too tight or not....so I won't mention that.

 

well the secondary flappers are removed, it idles pretty high but we kicked it down to 1500

yes the cable was fine, but it was a combination of adjusting the butterflies and the cable was loose the effin cruise control was actually damaged and wasnt letting the throttle down all the way....