Cranks wont start

Tiny
RENEE
  • ADMIN
Let us know how it goes so it will help others.
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:07 PM (Merged)
Tiny
BC3410
  • MEMBER
  • 1996 ISUZU RODEO
  • 6 CYL
  • 4WD
  • MANUAL
  • 126,000 MILES
When you turn the engine over, it does have spark and fuel; Seems as though the injectors are not opening all the way, but when you prime the engine with fuel it backfires. I am thinking that it might possibly have something to do with either the cam position sensor or crankshaft position sensor.
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:07 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Check your fuel pressure if its within specs-If there's a problem with those sensors you won't get spark and injection pulses.
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:07 PM (Merged)
Tiny
MARIANNE POE
  • MEMBER
Well, looked up my engine and found out it is a non interferenceengine. I am going to have belt replaced in 6 days from now. Will let you know what happens.
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:07 PM (Merged)
Tiny
ACETECH
  • MEMBER
  • 1996 ISUZU RODEO
  • 3.2L
  • V6
  • 4WD
  • MANUAL
  • 177,000 MILES
Engine cranks but does not start have voltage to crank sensor and cam sensor, I have voltage to icm but nohing comonig out replaced icm still no change can comuncate with scanner no codes present, seems injector curciut is not working good fuel pressureat 45psi. Have any ideas thanks.
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:07 PM (Merged)
Tiny
SINBAD271
  • MEMBER
Test the crank sensor its self. Test it for high resistance. Have you checked for fire? You may be getting
voltage to crank sensor but is the sensor sending a signal to pcm?
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:07 PM (Merged)
Tiny
BBALL499
  • MEMBER
  • 1995 ISUZU RODEO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 124,000 MILES
The water pump wnet out so wechanged it and the timing belt at the same time as recommended. We were careful to make sure that all pulleys and the marks on the timing belt wre aligned as the Haynes manual said to do. The care will crank but it will not start. If we moved a pulley while installing the timing belt can the timing be adjusted or do we have to take the car apart again and start over. Or is this not the problem? The car started right up each time before we did the repairs to the water pump and timing belt change. Help in Texas!
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:08 PM (Merged)
Tiny
MHPAUTOS
  • MEMBER
Hi there,

The first thing to do is run a scan and see if you have a set fault code. Check to see if you have spark, injection pulse and fuel pressure as well start here.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:08 PM (Merged)
Tiny
SSSTU07
  • MEMBER
  • 1992 ISUZU RODEO
  • 3.1L
  • V6
  • 4WD
  • MANUAL
  • 230,000 MILES
The new(used enging will turn over and run nicely w starting fluid. Gas pressure is good and comes to the throttle body. Voltage is reaching the feul injectors, but the TB will not accept the gas. No gas is being shot into the engine. I switched out the TB to my original TB (same style) and the problem persists. Does the computer need resetting? Should I recheck the vac lines? Did microdebris build up at the end of my clean gas line when I attatched it to the new(used) TB and remain in the line after I attatched my original TB?
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:08 PM (Merged)
Tiny
HMAC300
  • EXPERT
Scan for codes and check fuelpressure with a gauge autoparts rent it. Check fuse 2-6-8 and relays for ecm and fuel pump if tbi fp pressure shold be 9-13psi
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:08 PM (Merged)
Tiny
ELLWOOD1
  • MEMBER
  • 1989 ISUZU RODEO
  • 4 CYL
  • 4WD
  • MANUAL
  • 80,000 MILES
This car I believe has an alarm system that prevents the car from starting. We checked the fuel pump, when started the car runs fine. Sometimes it will start right up usually after just a brief stop. However if it sits for a while it can have problems starting, It turns over but will not start. It there a relay or something preventing it from starting that is tied into the factory alarm system.
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:08 PM (Merged)
Tiny
JAMES W.
  • MEMBER
Most alarm systems will shut down the entire ignition system so the engine won't even crank. And, if it related to the alarm system, the length of sitting time wouldn't affect the starting. How does it cold start in the morning? Please advise.
Was this
answer
helpful?
Yes
No
Monday, August 26th, 2019 AT 7:08 PM (Merged)
Tiny
BUDDIE95
  • MEMBER
Hello everyone, I realise this is an oldish post. But, I have a 2004 3.5liter V6 petrol 5 speed rodeo. I have been having an issue where the engine will crank but not start. The problem was intermittent at first but became progressively worse until the engine would not starter all. I have now worked out that the problem is either the fuel pump or the fuel pump relay. I swapped the fuel pump relay with the horn relay and the engine started. Just have to see if the problem occurs again now to test the pump. And yes the horn still works. Hope this helps.
Was this
answer
helpful?
Yes
No
Sunday, January 31st, 2021 AT 4:47 AM
Tiny
KEN
  • ADMIN
This sounds like a fuel pump or the crankshaft angle sensor has gone out. When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down this guide and report back.
Was this
answer
helpful?
Yes
No
Sunday, January 31st, 2021 AT 11:25 AM
Tiny
BUDDIE95
  • MEMBER
Hi Ken,

No can t hear the pump. It did the same thing yesterday so I shorted out the two large terminals for the relay and there was no difference. Also when cranking there is no fuel pressure at the valve on the left side fuel rail. I will be pulling the old pump out tomorrow and replacing with new one.
Was this
answer
helpful?
Yes
No
Tuesday, February 2nd, 2021 AT 4:24 AM
Tiny
BUDDIE95
  • MEMBER
On another note, can anyone explain why I get very bad fuel economy from this engine? Roughly 6km per 1 liter. 2004 Holden Rodeo with 3.5 liter V6 petrol with 5 speed manual box.
Was this
answer
helpful?
Yes
No
Tuesday, February 2nd, 2021 AT 4:27 AM
Tiny
KEN
  • ADMIN
You will need to start a new question for the Holden, if you have power to the pump but no pressure you will need to change the pump out here are the instructions. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
Was this
answer
helpful?
Yes
No
Wednesday, February 3rd, 2021 AT 11:01 AM
Tiny
BUDDIE95
  • MEMBER
Thanks Ken. I have replaced the fuel pump and the engine starts with no problem at all. By the way, I didn't take the tank out, I just undid a couple of the nuts and bolts holding the tray on and then jacked up the tray which gave me ample room to remove and replace the pump assembly.
Was this
answer
helpful?
Yes
No
Wednesday, February 17th, 2021 AT 4:35 AM

Please login or register to post a reply.

Sponsored links