joblorosco
New Member
- Joined
- March 4, 2011
- Messages
- 1
- Reaction score
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- City, State
- texas
- Year, Model & Trim Level
- 99 xlt
gents ...bear with as i describe my problem..
99 ford x 4l -6cyl SOHC with 164k miles
over past year the problem of starting and rough idle developed. i would occaisonally have to start the car twice as it wouldn't catch first try. this was intermitent. as time progressed it got to where this was the case every time. in addition once it started it surged at idle and died out. other than that it ran fine. about 6 months ago, recognizing a problem i did the IAC/MAF cleaning . it did nothing. over the the last 6 months problem progressed to nearly never starting first crank, surging at idle and dying. if i applied gas on cranking this would not happen. also in last 3 months CEL came on and stayed on.
so this last week i took it in and had the mechanic do the following:
chek any exhaust leak...none detected
chek fuel pump pressure......fine
complete tune up..plugs /wires.......
new fuel filter
all new 02 sensors. there are 4.
fuel injector flush.
cheked vacum leaks....he didn't say
he said the engine ran 'cool' and wanted to replace thermostat. i held off on that
results
CEL off
starting....while regularity of problem has abated, that is, mostly it starts first time, about 15% of time it does not. it still surges but doesn't die after surge. nearly but not all the way to stalling.
in other words all the repairs seemed to only have only partially fixed the problem.
i have had these problems last week when temps around here were in 7-0's and 80's , for those of you thinking about the gasket warm up/seating issue. i love the idea but would ambient temps render moot that problem? or maybe ambient temperture not significant influence on gasket performance.
so i tried all the fixes described in this thread except gaskets.
where do we go from here?
99 ford x 4l -6cyl SOHC with 164k miles
over past year the problem of starting and rough idle developed. i would occaisonally have to start the car twice as it wouldn't catch first try. this was intermitent. as time progressed it got to where this was the case every time. in addition once it started it surged at idle and died out. other than that it ran fine. about 6 months ago, recognizing a problem i did the IAC/MAF cleaning . it did nothing. over the the last 6 months problem progressed to nearly never starting first crank, surging at idle and dying. if i applied gas on cranking this would not happen. also in last 3 months CEL came on and stayed on.
so this last week i took it in and had the mechanic do the following:
chek any exhaust leak...none detected
chek fuel pump pressure......fine
complete tune up..plugs /wires.......
new fuel filter
all new 02 sensors. there are 4.
fuel injector flush.
cheked vacum leaks....he didn't say
he said the engine ran 'cool' and wanted to replace thermostat. i held off on that
results
CEL off
starting....while regularity of problem has abated, that is, mostly it starts first time, about 15% of time it does not. it still surges but doesn't die after surge. nearly but not all the way to stalling.
in other words all the repairs seemed to only have only partially fixed the problem.
i have had these problems last week when temps around here were in 7-0's and 80's , for those of you thinking about the gasket warm up/seating issue. i love the idea but would ambient temps render moot that problem? or maybe ambient temperture not significant influence on gasket performance.
so i tried all the fixes described in this thread except gaskets.
where do we go from here?
