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1989 Dodge Ramcharger hesitation

Tiny
TMALEY
  • MEMBER
  • 1989 DODGE RAMCHARGER
  • 5.9L
  • V8
  • AWD
  • AUTOMATIC
  • 100,000 MILES
Changed everything three fuel pumps 4 engine computers tps cts ats or its ckd for vac leaks ckd egr sys and air sys map sensor dist two of these injectors replaced harness replaced what happens is this starts fine runs fine until you let off gas then go back on like a short stop at lite then when it wants to backfire up intake
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Wednesday, April 23rd, 2014 AT 7:29 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,320 POSTS
Have you checked the catalytic converter? Have you checked engine compression to see if there is a weak cylinder (possible burnt intake valve)?
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Wednesday, April 23rd, 2014 AT 8:24 AM
Tiny
TMALEY
  • MEMBER
  • 2 POSTS
Well I changed this to duals, the one cat is the one from when it was single exhaust the other is new. Both seem ok ya now flow wise the compression i'll ck but while it backfires once in awhile the hesitation is there only if I let off the gas completely then go back on with in a few minutes wait longer still and it;s not there makin me nuts.I have tried to watch this on scanners while driving or try to get it to do it in shop an no?
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Wednesday, April 23rd, 2014 AT 3:29 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,320 POSTS
The backfire through the intake has me confused a bit. Usually, that is the result of a timing issue or a burnt valve. However, either one of those problems would be present all the time.
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Thursday, April 24th, 2014 AT 5:29 AM

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