DIY_EFI Digest V4 #414

[EFISYSTEMS at aol.com]

This VW came with a Ford computer????or did you put it in?????If it is stock 
then yes you could be getting a bad signal from the sensor.....make sure 
spark plug wires aren't introducing "noise" into the sensors' 
wires......otherwise if it is an adapted "kit" sounds more like the AE (accel 
enrichment) needs work...as it always has more upon start up before it moves 
to the higher coolant temps in the lookup tables...hth's
-Carl Summers


In a message dated 7/14/99 12:30:02 PM Pacific Daylight Time, 
DIY_EFI-Digest-Owner at efi332.eng.ohio-state.edu writes:

<< 
 Date: Wed, 14 Jul 1999 12:35:58 -0300
 From: "Paulinho" <pmateiro at hotpop.com>
 Subject: EEC-IV PROBLEM WITH ACCELERATION
 
 Hello Friends...
 I'm from Brazil, and have a Volkswagen POINTER GTI 2000
 but this engine uses eletronic injection FORD EEC-IV...(EFI, not SEFI) with
 4 injectors.
 When i turn on the engine and step accelerator (move the thortle)
 engine respond immediately.... and i repet this step , and no problem
 After 1 or 2 minutes , when i step the accelerator, engine
 not respond immediately ...
 I turn off the engine, turn on again, and accelerate the engine, it respond
 immediately
 so the delay to defect now is less, after 30 seconds , the problem return
 and engine
 not respond when i accelerate. (move the thortle)
 My EEC-IV use a MAP (manifold absolute pressure)...
 I check (run diagnostics) , and EEC return code 18
 "18 = Check base timing & advance function - Timing Tests / Ignition TACH
 signal erratic "
 
 Some times, when i connect cable to diagnose the EEC, after ENGINE ID,
 engine down...
 So i replace TFI, and MAP, but no results, problem persists....
 Can be HALL SENSOR ?
 
 I would appreciate its help...
 
 Bye
 Paulo Mateiroh
  >>