Hard start ..... please read for details
#1
04-11-2018, 04:37 PM
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Hard start ..... please read for details
okay , 2003 1500 van with the 5.2 .....
issues have been very small random misfire , bad mpg , hard to start, and power loss on highway ... so far I have replaced plugs , wires , distributor cap / rotor , Ignition switch , crank sensor , belt and tensioner, air filter , and today I had the fuel pump assembly replaced.
The van still cranks longer than I am used to before it turns over... is this normal to a point for the vehicle ? Check engine code code is back on already, probably for another random misfire. I haven't taken the van on highway yet but she seemed to pick up better on side roads after fuel pump... i thought the fuel pump would fix the hard start totally.... any ideas guys and girls? Thanks
issues have been very small random misfire , bad mpg , hard to start, and power loss on highway ... so far I have replaced plugs , wires , distributor cap / rotor , Ignition switch , crank sensor , belt and tensioner, air filter , and today I had the fuel pump assembly replaced.
The van still cranks longer than I am used to before it turns over... is this normal to a point for the vehicle ? Check engine code code is back on already, probably for another random misfire. I haven't taken the van on highway yet but she seemed to pick up better on side roads after fuel pump... i thought the fuel pump would fix the hard start totally.... any ideas guys and girls? Thanks
Last edited by Cannavan; 04-12-2018 at 10:49 AM.
#3
04-12-2018, 10:48 AM
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#4
04-13-2018, 10:32 AM
Here's an article that looks like it describes somewhat closely to what you say the symptoms are for your van, except for the hard cold start ... Might be helpful
http://troubleshootmyvehicle.com/chr...el-injectors-1
You might try running some good fuel system /injector cleaner through and see if that doesn't help some. Gumout, Techron, Seafoam etc...
As for the PCM question, yes, they do seem to be a fairly common failure reading through the forums. mine is a 99, owned it since new. PCM was replaced in 2004, though it had 240k on it back then also. Never a problem with it since then though and now has 304k on her now.
Not qualified in testing one but couldn't hurt to disconnect battery and unplug the 3 harness connectors to inspect. I used some CRC electrical spray to help clean out, let dry a few minutes, then smear a little DI-electric grease on the harness connector end before plugging back in. Did this back in 2012.
http://troubleshootmyvehicle.com/chr...el-injectors-1
You might try running some good fuel system /injector cleaner through and see if that doesn't help some. Gumout, Techron, Seafoam etc...
As for the PCM question, yes, they do seem to be a fairly common failure reading through the forums. mine is a 99, owned it since new. PCM was replaced in 2004, though it had 240k on it back then also. Never a problem with it since then though and now has 304k on her now.
Not qualified in testing one but couldn't hurt to disconnect battery and unplug the 3 harness connectors to inspect. I used some CRC electrical spray to help clean out, let dry a few minutes, then smear a little DI-electric grease on the harness connector end before plugging back in. Did this back in 2012.
#5
04-17-2018, 07:00 PM
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Here's an article that looks like it describes somewhat closely to what you say the symptoms are for your van, except for the hard cold start ... Might be helpful
http://troubleshootmyvehicle.com/chr...el-injectors-1
You might try running some good fuel system /injector cleaner through and see if that doesn't help some. Gumout, Techron, Seafoam etc...
As for the PCM question, yes, they do seem to be a fairly common failure reading through the forums. mine is a 99, owned it since new. PCM was replaced in 2004, though it had 240k on it back then also. Never a problem with it since then though and now has 304k on her now.
Not qualified in testing one but couldn't hurt to disconnect battery and unplug the 3 harness connectors to inspect. I used some CRC electrical spray to help clean out, let dry a few minutes, then smear a little DI-electric grease on the harness connector end before plugging back in. Did this back in 2012.
http://troubleshootmyvehicle.com/chr...el-injectors-1
You might try running some good fuel system /injector cleaner through and see if that doesn't help some. Gumout, Techron, Seafoam etc...
As for the PCM question, yes, they do seem to be a fairly common failure reading through the forums. mine is a 99, owned it since new. PCM was replaced in 2004, though it had 240k on it back then also. Never a problem with it since then though and now has 304k on her now.
Not qualified in testing one but couldn't hurt to disconnect battery and unplug the 3 harness connectors to inspect. I used some CRC electrical spray to help clean out, let dry a few minutes, then smear a little DI-electric grease on the harness connector end before plugging back in. Did this back in 2012.
Long cranks before firing during cold starts , power loss , mpg could be better , small misfires at idle / when coming to a stop. ...... makes me think fuel system... fuel pump assembly was just replaced .... anyone had issues with their fuel filter ? Where is the fuel filter located?
#6
04-18-2018, 07:43 AM
What code are you getting now?
Fuel filter is integral to the fuel pump module. So, not precisely a 'maintenance' item.
Do you have the kegger intake manifold on that? If so, have you checked to see if the gasket has blown? (two piece intake)
How old are your O2 sensors? Done a compression test??
Fuel filter is integral to the fuel pump module. So, not precisely a 'maintenance' item.
Do you have the kegger intake manifold on that? If so, have you checked to see if the gasket has blown? (two piece intake)
How old are your O2 sensors? Done a compression test??
#7
04-20-2018, 02:16 PM
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What code are you getting now?
Fuel filter is integral to the fuel pump module. So, not precisely a 'maintenance' item.
Do you have the kegger intake manifold on that? If so, have you checked to see if the gasket has blown? (two piece intake)
How old are your O2 sensors? Done a compression test??
Fuel filter is integral to the fuel pump module. So, not precisely a 'maintenance' item.
Do you have the kegger intake manifold on that? If so, have you checked to see if the gasket has blown? (two piece intake)
How old are your O2 sensors? Done a compression test??
how much work work is involved in replacing manifold gaskets ?
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#8
04-20-2018, 06:09 PM
#9
04-20-2018, 07:20 PM
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if I have oil showing up in my throttle body that would point towards rings going / being bad?
#10
04-20-2018, 08:16 PM