1988 (I gu8ess?) is the first year roof a reliable wiring harness.
I'm not fully checked out on the Bosch LH-2.2 LH-Jetronic with the Chrysler-MPG ignition systems. US market or no?
All appears to work yet no spark, so two and from the Chrysler-MPG ignition system module.
On the distributor body is the powered impulse sensor pickup sensor connector and cable. A two wire connector that can age from under-hood conditions. May get melty or disconnected somehow. Tips abound to test and service or at least make it a secure connection.
Donut know how that cable routs from that connector and cable from the distributor to the Chrysler-MPG ignition systems module. As you fuel pumps run and you have fuel spray I'll guess the powered impulse sensor and cable connection is okay.
'Downstream' electrically is the Chrysler-MPG ignition system module hanging on the washer fluid basket frame. I'm unsure, yet all can work upstream, you get fuel spray yet no spark as the Chrysler-MPG ignition module is not powered or, further 'lectrically downstream, the impulse output from the Chrysler-MPG ignition module does not get the the ignition control amplifier thing secured to the inner fender sort of jidden by the battery. Maybe corrosion here at the connection at the Chrysler-MPG ignition module on top or at that signal amplifer sort of hidden by the battery. Also, coils can fail and a continuity test at the coil between teh lo-pot connectors and the high pot coild wire connector can be a test to indicate the could is okay. Continuity tests are on unpowered systems.
As 1999, connectors and the seals in the cable harness connector can lose seal allowing the thing film corrosion.
I'm not well-practiced with LH-2.2 or the Chrysler-MPG ignition module.
http://www.stepbystepvolvo.com/Resources/Volvo%20No-Start.pdf
Asks for a donation in the PDF and here:
http://www.stepbystepvolvo.com/NoStart.html
Other no start guide for an LH-Jetronic 2.2 (and odler) system. Your 1988 as this injection system. 740/940 have the Bosch EZK 115 and 117 and ? powered impuls send inside the distributor.
Bosch EZK-116 withy the crank angle postion sendo starts in 1989. A little later for Turbo. No Chrysler-MPG ignition module on 740/940 and most markets outside CONUS.
Git your digital multimeter to work!
Questions?
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