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I have a 05 Impala 3.4 the fuel pressure is 45 is that to low?

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Fuel pressures usually run between 45 to 60 psi if suspect fuel pressure check the regulator on fuel rail

Posted on Oct 01, 2019

Testimonial: "Thanks James I did check that and it was questionable so I replaced it I also replaced the MAF sensor and ignition switch , it still stalls and acts like it's got a dirty fuel filter which I just replaced aiso."

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Should be plenty of pressure. Take time to google for the correct fuel pump pressure.You will find out quickly.

Posted on Oct 01, 2019

  • Johnny Hamman
    Johnny Hamman Oct 08, 2019

    I did William and it's suppose to be between 52 and 58.

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Posted on Jan 02, 2017

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SOURCE: 2000 chevy impala a/c low pressure port

PASS SIDE BY THE DRYER NEAR FIRE WALL.

Posted on Jun 28, 2009

  • 7353 Answers

SOURCE: My 05 impala has a miss testing fuel system wont

Try taking the vacuum hose off the regulator and see if its leaking there. If not, the only way to isolate it woud be to block or pinch closed the fuel line.

Posted on Oct 28, 2009

johnjohn2
  • 5763 Answers

SOURCE: 05 Impala missfire code 301 have changed

check intake for vaccum leaks,the gasket also and egr valve, thats alot of parts to have replaced without diagnosing first, if there are no fuel leaks and you said all injectors were replaced then you have a defective fuel pump, also these engines had misfire problem because of dirty injector but you replaced them so count that out. good luck.

Posted on Nov 02, 2009

  • 827 Answers

SOURCE: engine won't start when fuel

try replacing the fuel filter (provided the pump is in working order)...
Best regards
Ck

Posted on Mar 06, 2011

SOURCE: I've been smelling fuel in my 05 impala. When the motor is running you can see fuel coming out around the fuel pressure regulator. I would assume I just need to change the regulator but I just wanna s

I couldn't see the fuel,but yes- you need to fix
that problem for sure

Posted on Dec 09, 2012

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1 Answer

Is it ok for my boost gauge to run a 3 to5 goin down the highway 05 impala ss


boost pressure is related to exhaust temperature . so if you are not under load then the accelerator position will only allow the fuel that is required and so the boost will be reacting accordingly. If you suddenly accelerate and the boost goes up then the turbo is doing the job. If it stays the same then look for boost leaks in hoses and air cooler. waste gate settings or faulty turbo.

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Detroit Diesel Fault Codes


Code Description DDEC V Circuit
11 P 187 4 Chain PTO. Short circuit in the power
11 P 187 7 control system PTO wrong answers
12 P 187 3 Chain PTO. Short circuit in the ground
13 P 111 4-level circuit antifreeze. Short circuit in the ground
13 P 111 6 second-level circuit antifreeze. Short circuit in the ground
14 P 52 3 circuit coolant temperature intercooler. Short circuit in the power
14 P 110 3 circuit temperature antifreeze. Short circuit in the power
14 P 175 3 Chain oil temperature. Short circuit in the power
15 P 52 4 circuit coolant temperature intercooler. Short circuit in the ground
15 P 110 4 circuit temperature antifreeze. Short circuit in the ground
15 P 175 4 Chain oil temperature. Short circuit in the ground
16 P 111 3-level circuit antifreeze. Short circuit in the power
16 P 111 5 second circuit level antifreeze. Short circuit in the power
17 P 51 3 Throttle position circuit failed high
17 P 72 3 Bypass position circuit failed high
17 P 3 354 Relative humidity sensor circuit failed high
18 P 51 4 Throttle position circuit failed low
18 P 72 4 Bypass position circuit failed low
18 P 354 4 Relative humidity sensor circuit failed low
21 P 91 3 TPS circuit failed high
22 P 91 4 TPS circuit failed low
23 s 65 3 Oxygen content circuit failed high
23 P 174 3 Chain fuel temperature. Short circuit in the power
24 s 65 4 Oxygen content circuit failed low
24 p 174 4 Chain fuel temperature. Short circuit in the ground
25 no codes
26 s 25 November Aux. shutdown # 1 active
26 S 61 11 Aux. shutdown # 2 active (Incorrect SID. subject to change)
27, p 105 3 circuit temperature in the reservoir. Short circuit in the power
27 p 171 3 Ambient air temp circuit failed high
27 p 172 3 Air temp, circuit failed high
28, p 105 to 4 Chain manifold temperature. Short circuit in the ground
28 p 171 4 Ambient air temp circuit failed low
28 p 172 4 Air temp, circuit failed low
29 p 404 4 TCO temperature circuit failed low
29 p 351 4 TCI Temperature circuit failed low
31 S 51 3 Aux. Output # 3 open circuit (high side) S3
31 S 51 4 Aux. Output # 3 short to ground (high side) S3
31 S 51 7 Aux. Output # 3 mech. system fail S3
31 s 52 3 Aux. Output # 4 open circuit (high side) T3
31 s 52 4 Aux. Output # 4 short to ground (high side) T3
31 s 52 7 Aux. Output # 4 mech. system fail T3
32 S 238 3 SEL short to battery B1
32 S 238 4 SEL open circuit B1
32 s 239 3 CEL short to battery B2
32 s 239 4 CEL open circuit B2
33 p 102 3 Boost pressure circuit failed high
34 p 102 4 Boost pressure circuit failed low
35 p 19 March Ext range oil pressure circuit failed high
35 p 100 3 Chain oil pressure. Short circuit in the power
36 P 19 April Ext range oil pressure circuit failed low
36 P 100 4 Chain oil pressure. Short circuit in the ground
37 P 18 March Ext range fuel pressure circuit failed high
37 P 94 3 Chain fuel pressure. Short circuit in the power
37 P 95 3 Fuel Filter Restriction circuit failed high
38 P 18 April Ext range fuel pressure circuit failed low
38 P 94 4 Chain fuel pressure. Short circuit in the ground
38 P 95 4 Fuel Filter Restriction circuit failed low
39 S 146 2 Mechanical error EGR valve
39 S 146 12 Mechanical error EGR valve
39 S 146 return valve 7 does not meet the exhaust
39 S 147 2 turbocharger control mechanism does not respond
39 s 147 12 turbocharger control mechanism does not respond
39 s 14 147 current returns exhaust gases enough
39 S 147 11 turbocharger control mechanism does not respond
39 S 147 7 turbocharger control mechanism does not respond
41 S 21 0 Too many SRS (missing TRS)
42 S 21 January Too few SRS (missing SRS)
43 p 111 1 Low coolant level
44 p 52 0 ntercooler coolant temp, high
44 p 105 0 temperature in the reservoir above the norm
44 p 110 0 antifreeze temperature above normal
44 p 172 0 Air inlet temp, high
44 p 175 0 Oil temperature above normal
45 p 19 January Ext range oil pressure low
45 p 100 1 Oil pressure below normal
46 p 168 1 Low voltage batteries
46 S 214 1 RTC Backup Battery Voltage Low
46 S 232 1 Sensor Supply Voltage Low A3 & W1
P 0 47 18 Ext range fuel pressure high
P 47 94 0 The fuel pressure above normal
47 p 0 102 Turbo boost press high
47 p 106 0 Air inlet pressure high or TCBV diff press high
47 p 164 0 Injection control pressure high
48 p 18 January Ext range fuel pressure low
48 p 94 1 fuel pressure below normal
48 p 106 1 Air inlet pressure low
48 p 164 1 Injection control pressure low
48 p 351 1 TCI Temperature below range
48 p 404 1 TCO Temperature below range
48 p 411 1 EGR Delta pressure low
48 p 412 1 EGR Temperature low
49 p 351 0 TCI Temperature above range
49 p 404 0 TCO Temperature above range

More Fault Codes here Detroit Disel DTC

on Dec 20, 2016 | Cars & Trucks

1 Answer

What is p0641 code on 05 impala


DTC P0641 The powertrain control module (PCM) provides a 5-volt reference to the following sensors:

The throttle position (TP) sensor 1
The accelerator pedal position (APP) sensor 2
The engine cooling fan speed sensor
The AC pressure sensor
The fuel tank pressure (FTP) sensor
The oil pressure sensor (OPS)
The PCM monitors voltage on the 5-volt reference circuit. If the voltage is higher or lower than required, DTC P0641 will set.

Aug 26, 2014 | 2002 Chevrolet Impala

1 Answer

My 05 impala runs like not getting gas and i just had a tune up.what do i check next


pressure test on fuel system and change fuel filter would be my next stap....hope this helps and Please rate my post.

Aug 15, 2012 | 2005 Chevrolet Impala

1 Answer

99 Dodge Grand Caravan with code PO171


You could have a fuel delivery problem. I would recommend to start by checking fuel pressure. Fuel injected cars are very fuel pressure sensitive. Fuel pressure is very important and must be within specifications! But if the pressure is low, it does not mean the pump is bad. A plugged fuel filter, a pinched line, and low voltage at the pump can contribute to low fuel pressure. All three must be check before replacing the pump! You can get a fuel pressure gage at a local auto parts store for cheap. Fuel pressure testing is frequently overlooked but it is one of the common causes of poor performance. The test procedure must include testing that will insure normal fuel pressure under all operating conditions. Key Factors 1. Fuel demands are low at idle. 2. Wide open throttle at high engine revs uses the most fuel. 3. Fuel pressure must be reduced when manifold vacuum is high. Vacuum pulls fuel out of the injector causing it to deliver too much fuel if the pressure remains high. Manifold vacuum is used to open the pressure regulator at a lower pressure when vacuum is high. A good way to check your fuel pump is to run an amp test on the fuel pump while it is running or while battery voltage is being applied ot it (turning the key on, cranking your vehicle or even when your engine is running. The amount of amps your fuel pump will pull will depend on how much fuel pressure your fuel pump should supply to your fuel rail. A good rule of rule of thumb for this test is as follows: 14 to 15 psi 3 to 4 amps 30 to 45 psi 4 to 7 amps 45 to 50 psi 7 to 8 amps 50 to 70 psi 8 to 12 amps

Aug 07, 2012 | Dodge Grand Caravan Cars & Trucks

1 Answer

05 chevy impala will crank over but will not start, changed the fuel filter it was extremely dirty the fuel pump is working.


First check for spark at any of the sparkplugs if you have spark then check your fuel pressure.Just because its working does'nt mean it has enough pressure for it to run.It may be a weak pump.

Aug 08, 2011 | 2005 Chevrolet Impala

3 Answers

05 Impala missfire code 301 have changed


check intake for vaccum leaks,the gasket also and egr valve, thats alot of parts to have replaced without diagnosing first, if there are no fuel leaks and you said all injectors were replaced then you have a defective fuel pump, also these engines had misfire problem because of dirty injector but you replaced them so count that out. good luck.

Nov 02, 2009 | 2003 Chevrolet Impala

2 Answers

My 05 impala has a miss testing fuel system wont hold fuel pressure at regulator is it bad or pump.


Try taking the vacuum hose off the regulator and see if its leaking there. If not, the only way to isolate it woud be to block or pinch closed the fuel line.

Oct 28, 2009 | 2003 Chevrolet Impala

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