I've been trying to fix my father-in-law's Tracker for a fwe days now and I'm about ready to shoot the people who write Chilton manuals.
Anyway, the Tracker is exibiting extremely poor acceration until the engine reaches 3000RPM. This happend somewhat suddenly.
The MAP and TPS checked good. Plugs/wires are new. Timing belt was replaced by me about 10-15k miles ago. Cat is gutted. When I went to recheck the base timing, there is no change in the timing. It still reads the total advance (whatever it is, 30-40 BTDC?) and will not reset to the base timing of 4-6 BTDC when the diagnostic terminal is grounded like the manual and the emmisions decal show. When I replaced the timing belt last summer, everything worked like it was supposed to.
That led me to believe the ECM might be bad. However, I cannot find anywhere in the damn Chiltons manual on how to test just the ECM. It shows how to test every sensor/switch that requires checking voltage at various terminals in the ECM harness, but nothing on the ECM itself.
Anyone know how this is done??? It possible I've overlooked it in the manual, but i've been thru it a dozen times. Also if you can think of something else that could cause the acceration problem, let me know.

Thanks!

 

http://www.suzuki-forums.com/suzuki-...a-geo-tracker/
Try this forum.

Frank

 

Thanks for the link!

 

http://www.bedlib.org/ebsco.html

Here is a link to online manuals. Haynes and Chilton made very many mistakes on the coverage of Suzukis and Geo's. I had a 95 Geo. The books are worthless.
Hope this helps.

Frank