Hard start ..... please read for details
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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; Apr 12, 2018 at 10:49 AM.
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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.
Thread Starter
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Registered User
Joined: Mar 2018
Posts: 12
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From: Northern California
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?
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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??
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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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From: Clayton MI
Gotta pull the intake...... The gasket in question is on the bottom...... So, a good weekend worth of work.
Might be a good idea to replace the O2 sensor(s) as well.....
Take a look down your throttle body, and see if you have oil pooling in there.....
Might be a good idea to replace the O2 sensor(s) as well.....
Take a look down your throttle body, and see if you have oil pooling in there.....
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if I have oil showing up in my throttle body that would point towards rings going / being bad?