Will not stay running

Tiny
JCROUCH18
  • MEMBER
My fuel pressure regulator is in the throttle body. And I don't see anywhere to connect a fuel pressure gauge too. Would it help to say that my truck doesn't act up all the time? It does it randomly. But at times it acts up badly.
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
It still could be an issue with the pressure. As far as testing, you may have to remove the fuel line at the injector and check it there.
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-1
Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
PTIM
  • MEMBER
  • 1991 CHEVROLET S-10
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
My s10 truck will start and run for about 2-3 minutes and then just dies without any known cause. Sometimes I can start it right back up, but other times I have to wait 20 minutes or so. I have checked the IAC, battery and alternator. I have replaced the fuel filter and fuel pump relay. Any suggestions on where to go next would be extremely helpful. This truck sat outside at a friends house for a year or so. It was running fine when parked, but now is not. Thanks.
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Check the fuel pressure make sure its within specification with a fuel pressure gauge designed for your system. If it checks out -Check for spark, No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil, distributor pick-up coil, ignition control module, cam and crank sensors-
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-1
Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
MWALLACE
  • MEMBER
  • 1991 CHEVROLET S-10
1991 Chevy S-10 6 cyl Two Wheel Drive

the truck will start fine but at idle it will be running normal, idle down and it will do this for about a minute and then it will just die. Can you please help?

Thanks,

Michael
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Check the fuel pressure, coolant temperature and throttle position sensor and idle air control valve-
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
RUEL
  • MEMBER
  • 1991 CHEVROLET S-10
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 131,000 MILES
Hi,
My 1991 chevy s10 loses power when changing gears from park to reverse or from park to drive. Loses enough power to make it stall. I don't know what to look for. I put fuel injection cleaner when I went to put gas in it but didn't really solve the problem. Please help. Thanks!
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Do you have a check engine light and when was the last major tune-up?

Might want to have the idle air control valve and throttle position sensor checked for a start-
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
RUEL
  • MEMBER
The check engine light doesn't go on and the last tune up was a week ago. Changed spark plugs and wires. Should I get new sensors?
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
2CEXPT
  • MEMBER
As stated earlier have the IACV and TP sensors checked- don't start replacing sensors get it check out and then comeback
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
BANGIN AND DRAGIN
  • MEMBER
  • 1991 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 87,000 MILES
I have a 91 s-10 with a 4.3 automatic. When it, s hot outside (25 degrees c.) Or more, it stalls out on me and I can smell a bit of fuel. The engine temperature doesn''t go up at all.I had ignition system issues. Replaced distributor, coil plugs and wires. Did not fix it. Did the fuel pump and filter, still not fixed.I'm at a stand still and getting very frustrated. Any help would be awesome. Thanks in advance.
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Do below to determine if its fuel or spark issue

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
TACOPSLTD
  • MEMBER
  • 1991 CHEVROLET S-10
Computer problem
1991 Chevy S-10 6 cyl Two Wheel Drive Automatic 50.000 miles

hi
I put some new plug wires on my truck and not even thinking about it, realized after about maybe 1hr total of running the vehicle, that the plug wires are copper core and I believe subsequently damaged my ignition , last wk I replaced the fuel and brake lines with stainless parts and the truck is'nt being used right now so did some maint. Upon starting the truck to test the brakes, the truck started running realy choppy and sputtering then stalled, tried restarting it and starts and runs for 5 seconds and just dies. Done this atleast 6 times same thing, so first replaced the wires with correct wires and put different ignition module in and tried restarting still same response up until this incident the truck ran fine, as I mentioned earler did the lines dropped the tank for access and reinstalled everything I hear the fuel pump still running when it stalls. Just watching under the hood at injector spray after 5 sec. All power just appears to stop, now I'm an idiot for being as savy with vehicles as I am and this never even entered my mind. Anyway my question is this what else might be damaged the coil? Distrributor the ecm? All of the above? Wireing? I don't know anyway btw I have an underhood fp guage and cranking pressure is 4 to 5 lbs. And running pressure is about 10#I noticed as it stalls the fuel pressure jumps to 15 # then gradually drops down if its any help, anyway any response or advice would be truly appreciated
regards
Eden
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
MERLIN2021
  • EXPERT
Lets start with the simple stuff first, pull and inspect the plugs for damage.
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
TACOPSLTD
  • MEMBER
Well I checked the plugs they appear to be fine, checked gap and reinstalled as stated fuel pump runs and when truck stalls I can still hear fuel pump running for 2 sec after stallingis it possible my coil is cooked from to hot of a spark from the wires please help need to fix my truck to get to work now carpool ended
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Tuesday, August 21st, 2018 AT 3:26 PM (Merged)
Tiny
MERLIN2021
  • EXPERT
OK do we have the right wire set now? If so test for spark. Which type fuel injection do you have? CFI? Or SEFI? One central unit, or injectors at each cyl? If you have SEFI, fuel pressure is WAY off! Needs to be up around 60 psi!
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Tuesday, August 21st, 2018 AT 3:27 PM (Merged)
Tiny
RON7769
  • MEMBER
  • 1991 CHEVROLET S-10
  • 172,089 MILES
I have replaced map tps ignition module injectors and checked iac operation. As long as the vac line is off the truck will start and kind of run as soon as I hook it up it stops running. Why is this?
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Tuesday, August 21st, 2018 AT 3:27 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
I will generalize since you provided no engine size

could be a vacuum leak under the throttle body, iac motor, how did you check it?

Is the check engine light on?

Roy
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Tuesday, August 21st, 2018 AT 3:27 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Try cleaning out the idle air control valve and test the TPS/MAPsensors to include cleaning out the EGR valve.
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Tuesday, August 21st, 2018 AT 3:27 PM (Merged)
Tiny
MIKE1010
  • MEMBER
  • 1991 CHEVROLET S-10
Engine Performance problem
1991 Chevy S-10 4 cyl Two Wheel Drive Manual

my truck will idle fine for about 15seconds then it sudenly dies. Sometimes it just tries to die but picks itself back up. Then after a few more secondsn it will then die all of a sudden. It seems to be worse after it warms up. Ive checked my vac. Lines, they seem good
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Tuesday, August 21st, 2018 AT 3:27 PM (Merged)

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