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have you checked the plug to make sure you have good contact on all 4 pins?
if yall want a new, and i mean new, tps, i have one as a trail spare i could part withjust pay shipping
is there any difference in years?
If you find your engine is hard to start when it has been sitting for a while, but is still warm, you might have a problem with the fuel pump not turning on. I noticed my '85 4Runner would need to be cranked for many seconds before it would start. When I was doing some work on the engine, I decided to install an electronic fuel pressure sender in the fuel injector rail (I drilled a hole in the end of the rail, soldered in a brass pipe elbow and screwed the sender into that) and noticed when the engine is cranking but not starting, my fuel pressure was zero. Then, it would pop up to the normal operating range and the engine would fire. I reasoned that I had to crank the engine fast enough to pull sufficient air into the AFM to trip the fuel pump contacts and pressurize the system (I suspect I have an air leak in the fuel system that is letting the residual pressure bleed off over a few minutes - I see no fuel leaking). Anyway, digging through the handy FSM, I found the following:
Do you still need the TPS? I have one from an 85. I had the 85 TPS on my 87 & I had problems. It will work if you don't have to smog your rig (I know you trailer yours). To make a long story short, yes there is a difference between 85 & 86/87 TPS
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