Hi…………We've had a continuing problem with our 1800 VW engine since we pulled it to swap the clutch and flywheel. It starts, but just does not run well at
all. The only obvious area we have seen is that the throttle position sensor has to be set quite low to achieve an acceptable idle, about 1.2 on a scale of
5.0, compared to about 4.0 or 4.5 previously. Then as engine speed increases, the TPS goes to 0 at around half throttle and stays there. (According to Bertil,
the way to initialize the TPS is to optimize running at idle with the TPS, then the rest of the range is set properly.) We're at the straw-grasping stage,
and are considering pulling the engine and swapping out the brand new Bertils flywheel for the old one, as the flywheel has the nodes that control the crank
sensor.
If we can't get our existing system to work we may have to look into replacing the 25-year-old Bosche Motronic ECU with a current aftermarket unit. We've heard great things about the Pectel and MoTec systems, but have no familiarity with this kind of swap. Does anyone out there have experience with this sort of thing? What kind of interfaces do you have with existing parts of the system such as injectors, crank sensors, and TPS; or you need all new sensors; do you need to run the engine on a dyno to get useful results.
Any and all suggestions are solicited and welcome.
Thanks……..Skip Reber
If we can't get our existing system to work we may have to look into replacing the 25-year-old Bosche Motronic ECU with a current aftermarket unit. We've heard great things about the Pectel and MoTec systems, but have no familiarity with this kind of swap. Does anyone out there have experience with this sort of thing? What kind of interfaces do you have with existing parts of the system such as injectors, crank sensors, and TPS; or you need all new sensors; do you need to run the engine on a dyno to get useful results.
Any and all suggestions are solicited and welcome.
Thanks……..Skip Reber
