Bad Fuel Pump ???.
#1
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Bad Fuel Pump ???.
Im almost done with my 86 4Runner, but now it has a new problem that started about two weeks ago, i can only drive it around my cousins property right now because its not registered yet, but it started acting like it was running out of gas and loosing power for a few seconds and then it would be fine for a short time and then do it again, and the throttle response is very gerky when its doing this. About two months ago i replaced the TPS, so i know its good, it also has new plugs, plug wires, cap/rotor, and fuel filter, so im thinking the fuel pump is on the way out, its the original fuel pump with over 200,000 miles on it, so does that sound right or is there something else i should check before i order a new fuel pump ?.
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man i had same prob with my 86 22r can you here it turnin on?have you checked your sending unit? hows your eye glass on your carb?does it have =or half of gas in it?
is your fuel filter dirty stoping flow? ive got more ideas if none of those work
is your fuel filter dirty stoping flow? ive got more ideas if none of those work
#7
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Try the fuel pump test jumper (22RE engine assumed):
- http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump
- http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump
Last edited by 4Crawler; 10-18-2009 at 01:49 PM.
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hesitation or stumble during acceleration.
1 ignition timing incorrect
ignition system not operating properly
2dirty or clogged injectors or carb
3 low pressure check for proper operation of the fuel pump and for restricions in the fuel filter and lines
4caburetor out of adjustment
1 ignition timing incorrect
ignition system not operating properly
2dirty or clogged injectors or carb
3 low pressure check for proper operation of the fuel pump and for restricions in the fuel filter and lines
4caburetor out of adjustment
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The fuel filter is only about 3 months old and has less than 5 miles on it, and no i don`t run the tank low, but considering the fuel pump is 23 yrs old with over 200,000 miles on it, thats why i was thinking its going bad.
Last edited by myyota; 10-18-2009 at 01:54 PM.
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mines same age try your sending unit in the tank i took mine out cleaned it all.theres gonna be this filter on it i call it the sock once its so dirty it just stops
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Try the fuel pump test jumper:
- http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump
- http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump
Last edited by myyota; 10-18-2009 at 02:03 PM.
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the only other thing i could think is maybe a bad intake leak like an engine surgewhile holding down the accelerator steady and it takes a big gulp of air
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is there any water in ur distributer cap,you said that ur spark plugs are new did you gap them right to your truck?hows your vacuum hoses coming of the carb
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Any trouble codes stored in the ECU?
- http://www.4crawler.com/4x4/CheapTri...CheckConnector
- http://www.4crawler.com/4x4/CheapTri...CheckConnector
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hmmm im trying to give you exact result ive got the book infront of me lol um not vacuum .umm here pick one of these then ill give you more results lol.
1engine lacks power
2hesitation or stumble during acceleration
3engine surges
4engine misses during driving speed
these are just dif trouble shooting spots in book whcich one sounds like ur prob
1engine lacks power
2hesitation or stumble during acceleration
3engine surges
4engine misses during driving speed
these are just dif trouble shooting spots in book whcich one sounds like ur prob
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hmmm im trying to give you exact result ive got the book infront of me lol um not vacuum .umm here pick one of these then ill give you more results lol.
1engine lacks power
2hesitation or stumble during acceleration
3engine surges
4engine misses during driving speed
these are just dif trouble shooting spots in book whcich one sounds like ur prob
1engine lacks power
2hesitation or stumble during acceleration
3engine surges
4engine misses during driving speed
these are just dif trouble shooting spots in book whcich one sounds like ur prob
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1 ignition timing incorrect
ignition system not operating properly
2dirty or clogged injectors or carb
3 low pressure check for proper operation of the fuel pump and for restricions in the fuel filter and lines
4caburetor/injectors out of adjustment
5intake leak on breather or intake manifold
6egr
7mass air flow sensor
8fuel pump faulty or impuritys in fuel system
this is what it says for number 2 let me know out of these then ill check chapters for you sry for process of elimination
ignition system not operating properly
2dirty or clogged injectors or carb
3 low pressure check for proper operation of the fuel pump and for restricions in the fuel filter and lines
4caburetor/injectors out of adjustment
5intake leak on breather or intake manifold
6egr
7mass air flow sensor
8fuel pump faulty or impuritys in fuel system
this is what it says for number 2 let me know out of these then ill check chapters for you sry for process of elimination
Last edited by yodamudstar; 10-18-2009 at 05:47 PM.