If you have a tach, look VERY closely at the tach behavior when this happens. If the tach suddenly drops to zero but the engine is still turning then you have a simple electrical problem rather than a fuel supply or mixture problem. Since you have an 84 with 1.9 the tach signal comes from a more limited combination of electrical parts and thus fewer possible faults to cause a sudden drop in tach output. If the tach does not drop to nothing suddenly it can still be an electrical problem but in a different area. The quickest way to track something like this down is to break up the many parts into a few groups for testing purposes. Isolate the cause to a group first, then down to the bad part within that group. If the problem occurs often enough you can track it down quickly. How often does it occur? I can step you through the various tests to try to track this down. Mark JordanVw@AOL.COM wrote: >ive been having this strange intermittant problem with my '84 van for some >time now.. >i'll be driving along fine, then all the sudden if i dont have my foot on the >gas, the van will stall out.. no rough idle, no other warning..it will just >shut off.. i swapped the ECU and fuel pump relays (little identical grey >relays in that black box) with eachother and that didnt do anything.. i >replaced a corroded ground strap from the head to the coil and that didnt help >either.. > >no strange idle or warning lights precede these intermittant shutdowns.. >anyone have any ideas? > >thanks >chris > > > |
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