Question about 1999 GMC Jimmy

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Hard start sometimes wont start after fuel pump was replaced

Cranks fine,  almost starts( like flooded),  if i give a little throttle it will start.  after it starts it runs fine.  Help?

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Replace the fuel filter before the pump goes bad, just paid $700 to replace OEM withan aftermarket fuel pump and filter (better than $900 quoted by another shop. Had I changed the filter sooner, may have avoided. Now dealing with a bad intake mfld gsked and old leaking oil cooler lines. Help, GM is killing me!! These vehicles are notorious for various issues.

Good luck

Posted on Jan 23, 2009

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I have a 1999 Jeep Grand Cherokee and lately it's been having weird issues. It will starts right up usually but on occasion it will attempt to turn over and won't start but if I wait and try again it'll...


so pulling the gas tank is first? really?
no engine stated, so must guess... on parts. 4.0l or 4.7liter?/?????? the 4.7 has 8 cop spark coils. so????
the 4.7 is a V8. so??
Cops or not make big differences.
ever get a full tune up this decade, white all parts.
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the ECU also tells you at stall why it did, most times, the not looking
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http://www.fixkick.com/Jeeps/ASD.html

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2 lost compresion to any or all cylinders.
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so the fast right foot fails to keep it going
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its not getting gas, is that a guess? or the results of a real test.
as per FSM book.?
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i think its flooding (sparks wet)
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this magic feature, cuts all fuel cranking, to clear said flood.
(oper, guide covers this)

if this works,
ever consider a full tuneup? this decade? with filters?
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check for flooding? spark good,!
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each line has tests we do,, if you dont have tools, all this is just
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do you want guessing (unsaid)
here:
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tips dry or soaking wet.
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cranking wide open throttle wot. like the operators guide says.
start now? this cuts all injection, this magic PCM trick.

see scotty ,
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skip the silly ad.
note he says 2, but he ASSUMES compression is good. (oops)
but his tests are fast, and if it fails to start, see #1 above. ask
http://www.youtube.com/watch?v=064Ilsz8Fzg&NR=1&feature=fvwp


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