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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

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Old 01-14-2009, 08:35 AM   #1 (permalink)
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87 Truck 22r Chugs in 5th gear over 50mph

My Toyota truck 22r 1987, in 5th gear it chugs like it doesn't have enough fuel. I will be on the highway and if i lightly (and i mean lightly) press on the accelerator it will accelerate to about 65-70 and thats it. It won't go past that. If i try to go past that THE ENGINE CHUGS AND IT SEEMS LIKE THE POWER CUTS IN AND OUT. I replaced the fuel pump and air filter. What else should i do?
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Old 01-14-2009, 08:42 AM   #2 (permalink)
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typical setup... lol. how do u think these engines are so reliable? theyre overbuilt and underpowered.
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Old 01-14-2009, 08:46 AM   #3 (permalink)
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give it a tune up...new plugs, wires, fuel filter, air filter, cap, rotor.

clean out your maf sensor, make sure your timing is right.

mine would do the same thing when i first got it, felt like it had no power if i went more than half throttle, i just gave it a little more timing and it runs like a champ now.
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Old 01-14-2009, 10:06 AM   #4 (permalink)
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How do you give the truck more timing or even change the timing? Where is the MAF sensor, and what is the best way to clean it.
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Old 01-14-2009, 11:07 AM   #5 (permalink)
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The 22R has a carburetor and does not have an air flow sensor--that's for efi engines.

Timing is adjusted by using a timing light and rotating the distributor to bring timing into spec. Check the sticky for online fsm -- there is on for 85 trucks which will cover the ignition system for 22R engines. Make sure that when you set timing that the engine is at the proper rpm. The 22R distributors have mechanical advance which is speed sensitive.

Your problem is likely either tune-up related or faulty fuel delivery related. Do what fivesfe suggests for a start. Might also consider adjusting the valves, checking compression, etc. Make sure you have no vacuum leaks. Might also take a look at the carb to make sure you're float's properly set, that it's free of contamination, etc. Can't say for sure in your case, but sometimes slow fuel delivery and dirty carbs can cause the symptoms you report.
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Old 01-15-2009, 08:48 PM   #6 (permalink)
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solution to the PROBLEM

You were right, I just worked on the truck today. I changed the Plugs, cap, router, wires, and fuel filter. The Truck runs like NEW. I swear there is a massive amount of restored horsepower. Its amazing the difference. It no longer chugs above 50 MPH. thanks for your help.
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Old 01-15-2009, 08:48 PM
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1987, 22r, 50mph, 5th, 87, air, check, chugging, chugs, clean, flow, fuel, gear, mass, pump, sensor, toyota, truck, wont

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