1988 Larson trouble with bow up

[Upl88]

I have 1988 Larson mercruiser 3.0 alpha stern drive when I go from bow down position and toggle for bow up sometimes it won’t do anything to get bow up toggle to work I have to push trailer button first for a second then bow up button will work have any ideas?

 

[Scott06]

I have 1988 Larson mercruiser 3.0 alpha stern drive when I go from bow down position and toggle for bow up sometimes it won’t do anything to get bow up toggle to work I have to push trailer button first for a second then bow up button will work have any ideas?

Probably trim limit switch is bad, you can jumper it out just need to be careful not to trim up too high. Long term replace the switch but this is best done when doing bellows and you have transom apart

 

[Upl88]

Thanks I’m having a different problem now on my 88 larson 3.0 when I cold start it it fires up right away and idles ok but when it warms up it won’t idle it will die unless I have rpm’s up and if it dies it cranks over very slow then won’t crank at all until it sets for a while acts like battery weak but test ok and neg cable was hot don’t know where to begin to fix

 

[achris]

Thanks. I’m having a different problem now on my 88 Mercruiser 3 litre. When I cold start it, it fires up right away and idles ok, but when it warms up it won’t idle. It will die unless I have rpm’s up, and if it dies, it cranks over very slowly, then won’t crank at all until it sits for a while. Acts like battery weak but test ok, and neg cable was hot. Don’t know where to begin to fix.

Hot cables indicate bad connections start with removing and clean all the terminals positive and negative until they are clean enough to eat your dinner off of what ignition do you have points or est likely bad connections are causing low voltage to the module and that's giving bad spark engine cant run right on bad spark put ground wire on distributor body

 

[Upl88]

Hot cables indicate bad connections start with removing and clean all the terminals positive and negative until they are clean enough to eat your dinner off of what ignition do you have points or est likely bad connections are causing low voltage to the module and that's giving bad spark engine cant run right on bad spark put ground wire on distributor body

I’m not sure what u mean ground wire on dust body

 

[achris]

I’m not sure what u mean ground wire on dust body

not dust body distributor body run a wire from the engine block to it

 

[Upl88]

not dust body distributor body run a wire from the engine block to it

I’m not sure what u mean ground wire on dust body

Sorry about spelling I will try that

 

[achris]

Sorry about spelling I will try that

I think you need some of these too ......... (when you run out, let me know and I'll send you more.)

 

[Upl88]

Hot cables indicate bad connections start with removing and clean all the terminals positive and negative until they are clean enough to eat your dinner off of what ignition do you have points or est likely bad connections are causing low voltage to the module and that's giving bad spark engine cant run right on bad spark put ground wire on distributor body

It has points condenser. Rotor

 

[achris]

Bad connection will still lower the voltage at the coil, reducing the heat of the spark...

 

[garbageguy]

...if it dies it cranks over very slow then won’t crank at all until it sets for a while acts like battery weak but test ok...

battery test is a load-test?