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E-150 ford van idles erratic and surges driving down the road

Straight six 300 87,000 miles replaced plugs wires cap and rotor and tps sensor

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1992 ford van driving badly

Hi , you might try changing the fuel filter(s) also if this van is equipped with O2 sensors have them checked and replaced if necessary . Hope this helps , Rod

Posted on Sep 15, 2008

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csmock132
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SOURCE: 1989 GMC 2500 5.7L - engine surges and stalls at idle. Loses power at cruising speed.

Wow you have replaced a lot of stuff. Lets go back to the Fuel pump. When you replaced it did you replace the hose between the pump and the sending unit. These are common for splitting. Have you hooked up a fuel pressure gauge to check what pressure you have? It should be real close to 13 psi and should raise to at least 18 or 19 when you pinch off the return line.

Posted on Jun 02, 2009

  • 285 Answers

SOURCE: 01 dodge running rough at idle and poor driving performance

did u try turning the distributor??? if u did u need to take it to a shop and have the cam sync reset with a scanner,turning the distributor on those engines DOES NOT change timing.how many miles on this truck?? over time the dist. gear weares and it can also change the cam sync,also look at the little vacuum port on the passenger side of the intake manifold and see if the rubber plug or hose is missing off of it,also does this truck consume oil?? if it does it could also be your problem,a pan on the bottom of the intake manifold leaks and that could cause yur problem also,to test for that simply put your thumbs over the holes in the valve covers with it running..if it sucks yur thumbs in, that gasket needs to be replaced and it will also cut down or stop your oil use,hope this helps

Posted on Sep 05, 2009

bromech
  • 322 Answers

SOURCE: 1998 chevy k1500 vortec 305, high idle, surges a

TPS probably not cause surging idle. Could be IAC motor, could be MAF sensor. If you dont have a check engine light I would be thinking IAC motor.

Posted on Jan 21, 2011

  • 189 Answers

SOURCE: 1984 Ford E-150 Econoline van It has no spark

check the wiring around the distributor i don't know how simular it is to a 1990 ford crown vicktoria 5.0 engine,
but on this car, there is a little two 2 prong plug beside the distributor no wires coming from the plug it's self , it plugs into the wiring harness it works like a fuse.
if you remove it or if it has melted the car WON'T START, no fire the link can be removed to keep the car from starting for testing purposes (fule pressure ect.)
when you wouldn't want the car to start

Posted on Sep 24, 2011

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A number of things could be the problem here:
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  2. Bad wires - also would cause erratic idling
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  4. Bad MAF (Mass Air Flow) sensor
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