1989 sidekick misfire when cold or when under electrical load

[Jamestb]

Thought I would give one final update. I ended up getting a new EGR. Found a good deal on rock auto for a discontinued California model (didn't make a difference)
I also decided to change the gaskets on the throttle body and come to find out after some serious head scratching. The throttle body had a very small coolant leak that would allow coolant to get drawn up and out of two tiny holes on the inside of the throttle body next to the flap. There was never enough coolant being drawn in to cause the oil to get foamy or to notice a drop in the radiator, but it was enough to cause a misfire. I got that all fixed and the kick runs a lot better. It still only gets 19-20 mpg, but it is a hardtop with a 3-speed and 30" tires so I think that is good enough.

[fixkick]

oh yes, the 8v has water pathes deep inside, I have photos of them and suzuki xray views.
wow that is rare,.... the sucking inside. of AF.

only 1 water hole
and a row that must be blocked. as seen here.
http://www.fixkick.com/IDLE-AIR/Slide_Sh...age_3.html

the 89s does not run hot water ISC only IAC is hotwater 89./90

water goes up then to the iAC and then out the hose.
so water can only leak if the base gasket is bad, or TB is cracked from ICE Freezing that is common, running pure water or weak AF.
I presume car is 5speed, the 3speed has base electric heater and 2 more things to break and leak water there.


here is the kit from SMP
and fits all years, 8v. (has extra parts to do that)
http://www.fixkick.com/IDLE-AIR/Slide_Sh...ge_36.html

great news finding a water leak, to the intake. and cured.