85 4Runner 22RE help
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85 4Runner 22RE help
I have gotten so much out of this forum, so thanks to all that contribute! Im not great at diagnosing and troubleshooting, but i think i got it figured out. So my fuel pump wasnt kicking on and the Runner was just cranking over and over with no start. I jumped the test connector to turn on the fuel pump, i heard it turn on, but still no start (so i know the fuel pump isnt the problem). I then removed the jumper and blocked open the AFM and could hear the pump turn on and the truck started right up. According to the service manual there is a circuit that is completed in the AFM to turn on the fuel pump...so my question is...
have i figured out the problem? am i correct to assume that the AFM is bad since it starts right up just fine when the flapper is blocked open?
thanks in advance!
have i figured out the problem? am i correct to assume that the AFM is bad since it starts right up just fine when the flapper is blocked open?
thanks in advance!
#3
if the tube to the afm to the intake has a hole in it or if its not connected it stops the pump. also check the cold start injector, it will make the motor turn over without starting
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okay so new AFM did not remedy the problem. Just like the old one, i can shove that flapper all the way open and i hear the fuel pump kick on and it starts right up...without blocking it open (even with the new AFM) it wont start, just turns over and over and over. i dont see any cracks or gaps or anything within the intake tubing.
any other ideas? does the cold start injector affect the fuel pump?
any other ideas? does the cold start injector affect the fuel pump?
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See below:
http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump
The AFM does not operate the fuel pump during starting.
http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump
The AFM does not operate the fuel pump during starting.
if the pump comes on with the jumper plugged in doesnt that mean the COR is fine?
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The old afm tested fine within the ranges when i tested the ohms from the chart you posted, but i figured id try a new afm and return it if it wasnt needed.
if the pump comes on with the jumper plugged in doesnt that mean the COR is fine?
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So I could leave the jumper permanently plugged in the test connection to bypass the afm? and it would start up fine each time then right? The old afm tested fine within the ranges when i tested the ohms from the chart you posted, but i figured id try a new afm and return it if it wasnt needed.
if the pump comes on with the jumper plugged in doesnt that mean the COR is fine?
if the pump comes on with the jumper plugged in doesnt that mean the COR is fine?
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Im sure you've either got your problem fixed by now or sold the truck, but mine is doing the same thing. I have to open the AFM vane with a screwdriver until it warms up, then i can reinstall the air tube and itll fire up on its own. My problem is the cold start injector time switch is shorted. Just thought id let you know.
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