Question about 1989 Ford Bronco

2 Answers

91 bronco runs 30 sec then dies,

Cleaned injectors, fuel is ok, new wires and getting spark. also replaced the tps. Shuts down like I tuned the key off

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  • jking383 Jul 28, 2009

    Yeah but have to wait 10 min, the engine gets alot of gas.The pressure was 45 psi.

  • outdoorsman5
    outdoorsman5 May 11, 2010

    Have you checked your fuel pressure to see if it is within specs? Also will it restart back up when it dies?

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Did you check the fuel pump and filter

Posted on Jul 28, 2009

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When it shuts down you need to use a spark checker which is very cheap to buy, around $10.00 and see if it is getting spark right after it dies. If it does not have spark then try changing the ESCM or electronic spark control module with is generally around your distributor.

Posted on Jul 28, 2009

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Cuts out while driving


which engine option??????????????????????
sensor 2 is not it. sensor 2 is only a CAT test.
Sensor 1 runs fueling at idle and light flat cruise.
the CUTS out, dont tell me anything.
is the engine stalling?
ever tune it up and not buy the most expensive parts in EFI. map, and IAC?

Cuts out>
do you mean it hesitates and then catches up?
does the engine stall and die?
does the wide open throttle work up hills with full power?
cuts out.
if it is only short time hesitations and then wakes up
that is tuneup time, spark plugs, new, spark wires,
read the operators guide, for 60,000 mile tuneups. filters /spark parts.
if it is tuned up, and only hesitatates
try a new TPS.
if it is a deep long lasting full bog.
then the , fuel pressure is low, check that, the guage costs $20
make sure fuel pressure is at spec, first for BOGS.
the EFI system can not run right with low fuel pressure.

all 0xygen sensors are off line, accelerating so its not that
only the front sensors set fuel rates and never accelerating.
the ECU shuts them down then
and uses the map , air temp to calculate fuel rates.
but if fuel pressure is low, it gets all that wrong.
after all , it dont know its low, and can not adjust for that
and most injectors are useless below 28psi.



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engine surges, then stalls. correct.>?

nice testing , rare here, real nice !!!!
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so if engine is ok, compression, (seems cat is not melted with 20 " HG)
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