I have a 1987 toyota pickup 4x4 22re .Truck idles good when i mash the gas pedal the engine surges as if getting fuel intermintenly ??? ( As if you were mashing pedal to the floor and back up over and over) Leads me to think poss fuel pump...Any suggestions and or other poss causes for this would be appriciated. Thanks

 

Has it always done this since you owned it???

What happens if you just drive easy on the throttle??

When was the last time a major tune up was done??? With both are and fuel filters??

I have found this ethanol blended gas very hard on fuel filters

are you in the habit of driving around on fumes and running out of gas all the time??

 

First of all Thanks for taking the time to respond,It runs the same regardless of how you position the throttle.I just bought the truck but no it was running fine and then it started doing this, thats the reason he sold it.The engine has roughly a years worth of use,was bought new and installed a year ago.Major tune up was recent...air filter plugs and rotar,change of oil . I did unplug the TPS while running and it would throttle perfectly,leading me to think its the TPS...not sure but have one ordered.I hope its as simple as that.