87 3.2 Cab Loss of Power woes etc

Here's what mine looks like. I thought that my frequency valve relay went bad, and ordered a spare. But that was not the problem. Actually I had a short in the two wires which goes to the frequency valve itself. Hopefully your problem is the same. A two wire fix job.
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Here's another pic. You can faintly see the black wires that go to the frequency valve to the left of the fuel distributor. That was where my problem was hiding. Good luck!
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Other items to check is the big white connector thats located drivers side rear fenderwall behind the coils. clean it out good using contact cleaner and gently tighten the receptacle contacts together for a tighter fit

In addition maybe check your extenders for signs of breakdown (black marks)

I had these two items checked after having rough idle and loss of power a few days after major

it really ended up being a brand new extender was defective...there was a distinguishable "ticking" sound also due to the sparking

hope this helps

 

I agree the extenders are always an easy fix even though a bad extender can be nothing more than a dot the size of a pencil tip. But he did comment that the frequency valve was not buzzing, which leads you down a different path.

 

protection relay, extenders, and ignition coil modules are what I would check first!
All symtoms of what you are describing about the car. Hope its something simple.

good luck,

Mike

 

I had a similar problem, I pulled the plugs and it was obvious they needed changing as they were pretty black on one bank. Car was fine for a bit but started to run rough and down on power again so I put fuel injector cleaner through a tank of fuel and it worked a treat.

Just to add, I'm a mechanical numpty but it seemed a cheap and easy place to start.

 

As a long shot add 8 oz of two cycle oil to gas. This lubes the mechanical and seal rings. Probably won't work, but will not hurt anything either.

 

I didn't. Algar was able to track it down. But I had already replaced the fuse and then the frequency valve relay itself and that still didn't do the trick. It did make sense to me, however, as they had taken the Jetronic unit out of its spot in the trunk to take pics for the Classiche process and the had moved the fuel distributor system onto the top of the engine when they did my major. So I wasn't surprised that a broken wire was the issue at the end of the day. But I looked and I didn't "see" it and I'd like to think I'm fairly observant. But if your back on power, which means that the frequency valve is clearly buzzing, then you should be good for a while.