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The TPS is generally spot welded in place unless someone has had the DFI unit off. Are you sure it's not the ISC out of adjustment?? You could back out the plunger screww and see if that gives you the extra rpm you need.

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how can i calibrate the TPS on my cadi 87 eng 4.1L. When I stop the Idle speed is to low and the Red STOP ENG LIGHT illuminated .The amber SERVICE SOON LIGHT illuminated . I have code E55 .

waterzap has a 1987 shop manual - Sent him a PM and he should be able to send you the TPS adjustment procedure.

'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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