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 Cleaned EGR Now car wont start

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lo619
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PostSubject: Cleaned EGR Now car wont start   Sun May 22, 2011 3:16 pm

So, this morning I decided to clean out the EGR to see if it would help my new to me 95 SC to see if it would idle smoother. When I inspected it It wasn't bad, not clogged or anything, but I proceeded to clean it with carb cleaner. I did not put on a new gasket, because the old one looked fine, I also sprayed a little cleaner down the intake and exhaust holes bolted it pack up, re connected the wire connector and started the car. It ran like sh*t. and then died on me, now when I try to start her she turns over, wants to run but just wont start up.

Did I some how f*** something up? Need some advice guys. puzzled puzzled puzzled puzzled puzzled
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albertj
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PostSubject: Re: Cleaned EGR Now car wont start   Sun May 22, 2011 7:58 pm

lo619 wrote:
So, this morning I decided to clean out the EGR to see if it would help my new to me 95 SC to see if it would idle smoother. When I inspected it It wasn't bad, not clogged or anything, but I proceeded to clean it with carb cleaner. I did not put on a new gasket, because the old one looked fine, I also sprayed a little cleaner down the intake and exhaust holes bolted it pack up, re connected the wire connector and started the car. It ran like sh*t. and then died on me, now when I try to start her she turns over, wants to run but just wont start up.

Did I some how f*** something up? Need some advice guys. puzzled puzzled puzzled puzzled puzzled

I was not aware that carb cleaner was OK to use on an EGR.

Albertj
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lo619
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PostSubject: Re: Cleaned EGR Now car wont start   Sun May 22, 2011 11:24 pm

albertj wrote:
lo619 wrote:
So, this morning I decided to clean out the EGR to see if it would help my new to me 95 SC to see if it would idle smoother. When I inspected it It wasn't bad, not clogged or anything, but I proceeded to clean it with carb cleaner. I did not put on a new gasket, because the old one looked fine, I also sprayed a little cleaner down the intake and exhaust holes bolted it pack up, re connected the wire connector and started the car. It ran like sh*t. and then died on me, now when I try to start her she turns over, wants to run but just wont start up.

Did I some how f*** something up? Need some advice guys. puzzled puzzled puzzled puzzled puzzled

I was not aware that carb cleaner was OK to use on an EGR.

Albertj

In my previous vehicle my EGR was blocked with carbon and doing this really helped it to run better. You can clean IAC, MAP and MAF sensors with carb cleaner when they are dirty or have carbon built up.

I'm not quite sure what is going on it still will not start, I replaced the gasket with a new one. it turns over and tries but nothing happens. I really need some advice. I just bought this car last month and paid all the registration fees yesterday. I have been without a vehcile now since the beginning of feb and was really looking forward to driving again.
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lo619
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PostSubject: Re: Cleaned EGR Now car wont start   Sun May 22, 2011 11:33 pm

I just disconnected the battery to see if it resets the CPU.... hopefully this works.
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albertj
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PostSubject: Re: Cleaned EGR Now car wont start   Mon May 23, 2011 12:49 am

My understanding is that on GM cars the aftermarket EGR valves do not have enough internal spring pressure to hold closed. They creep open in use, which fouls the intake mixture, blackening the inside of the intake manifold, carbonizing the IAT sensor, and causing other problems. .

My point is a pO may have installed an aftermarket EGR instead of cleaning the OE one and your problem may not be so much a dirty valve as it is a punk valve.

And I still don't know jack about using carb cleaner on them.

So I am thinking you need a replacement EGR, preferably a Delco, if you shop around you should find a parts place selling the Delcos at a discount.

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97 park ave
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PostSubject: Re: Cleaned EGR Now car wont start   Mon May 23, 2011 1:02 am

lo619 wrote:
albertj wrote:
lo619 wrote:
So, this morning I decided to clean out the EGR to see if it would help my new to me 95 SC to see if it would idle smoother. When I inspected it It wasn't bad, not clogged or anything, but I proceeded to clean it with carb cleaner. I did not put on a new gasket, because the old one looked fine, I also sprayed a little cleaner down the intake and exhaust holes bolted it pack up, re connected the wire connector and started the car. It ran like sh*t. and then died on me, now when I try to start her she turns over, wants to run but just wont start up.

Did I some how f*** something up? Need some advice guys. puzzled puzzled puzzled puzzled puzzled

I was not aware that carb cleaner was OK to use on an EGR.

Albertj

In my previous vehicle my EGR was blocked with carbon and doing this really helped it to run better. You can clean IAC, MAP and MAF sensors with carb cleaner when they are dirty or have carbon built up.

You absolutely can NOT use anything but MAF cleaner to clean a MAF, this includes carb cleaner. If you used carb cleaner on you MAF its probably junk.
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lo619
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PostSubject: Re: Cleaned EGR Now car wont start   Mon May 23, 2011 1:12 am

albertj wrote:
My understanding is that on GM cars the aftermarket EGR valves do not have enough internal spring pressure to hold closed. They creep open in use, which fouls the intake mixture, blackening the inside of the intake manifold, carbonizing the IAT sensor, and causing other problems. .

My point is a pO may have installed an aftermarket EGR instead of cleaning the OE one and your problem may not be so much a dirty valve as it is a punk valve.

And I still don't know jack about using carb cleaner on them.

So I am thinking you need a replacement EGR, preferably a Delco, if you shop around you should find a parts place selling the Delcos at a discount.


You have a good point with the EGR being a aftermarket. Would a faulty EGR cause the car not to run at all? If that is the case then that's probably what happened. The whole reason I'm cleaning stuff is because of the idle and it also failed a california smog for the PO and I have to re-smog the car. I want to pull any codes it might be throwing... No check engine light.... EGR's for this bad boy are $100+ If you know of a site that has them cheaper let me know. I'm already dipping into the hundreds of dollars just to get it on the road.
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lo619
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PostSubject: Re: Cleaned EGR Now car wont start   Mon May 23, 2011 1:15 am

97 park ave wrote:
lo619 wrote:
albertj wrote:
lo619 wrote:
So, this morning I decided to clean out the EGR to see if it would help my new to me 95 SC to see if it would idle smoother. When I inspected it It wasn't bad, not clogged or anything, but I proceeded to clean it with carb cleaner. I did not put on a new gasket, because the old one looked fine, I also sprayed a little cleaner down the intake and exhaust holes bolted it pack up, re connected the wire connector and started the car. It ran like sh*t. and then died on me, now when I try to start her she turns over, wants to run but just wont start up.

Did I some how f*** something up? Need some advice guys. puzzled puzzled puzzled puzzled puzzled

I was not aware that carb cleaner was OK to use on an EGR.

Albertj

In my previous vehicle my EGR was blocked with carbon and doing this really helped it to run better. You can clean IAC, MAP and MAF sensors with carb cleaner when they are dirty or have carbon built up.

You absolutely can NOT use anything but MAF cleaner to clean a MAF, this includes carb cleaner. If you used carb cleaner on you MAF its probably junk.

I cleaned my airflow sensor 3 weeks ago with carb cleaner and it ran much better afterwards.. (I get MAP and MAF mixed up)
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97 park ave
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PostSubject: Re: Cleaned EGR Now car wont start   Mon May 23, 2011 9:30 am

lo619 wrote:
97 park ave wrote:
lo619 wrote:
albertj wrote:
lo619 wrote:
So, this morning I decided to clean out the EGR to see if it would help my new to me 95 SC to see if it would idle smoother. When I inspected it It wasn't bad, not clogged or anything, but I proceeded to clean it with carb cleaner. I did not put on a new gasket, because the old one looked fine, I also sprayed a little cleaner down the intake and exhaust holes bolted it pack up, re connected the wire connector and started the car. It ran like sh*t. and then died on me, now when I try to start her she turns over, wants to run but just wont start up.

Did I some how f*** something up? Need some advice guys. puzzled puzzled puzzled puzzled puzzled

I was not aware that carb cleaner was OK to use on an EGR.

Albertj

In my previous vehicle my EGR was blocked with carbon and doing this really helped it to run better. You can clean IAC, MAP and MAF sensors with carb cleaner when they are dirty or have carbon built up.

You absolutely can NOT use anything but MAF cleaner to clean a MAF, this includes carb cleaner. If you used carb cleaner on you MAF its probably junk.

I cleaned my airflow sensor 3 weeks ago with carb cleaner and it ran much better afterwards.. (I get MAP and MAF mixed up)
And now your car isnt running, sounds like it worked great for those 3 weeks though...
rolleyes
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robotennis61
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PostSubject: Re: Cleaned EGR Now car wont start   Mon May 23, 2011 6:44 pm

Dont know for sure if related,Make sure all the elec connections near the timing cover are dry and clean of oil. CCS,CSS,Knock and other..if impregnated with oil, they will screw up the dialogue between the sensors and the computer.unplug and spray with elec clean and then a dab of dialectric.and check again...happened to me,fixed it,damned if the car dont run a ton better....
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98riv
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PostSubject: Re: Cleaned EGR Now car wont start   Mon May 23, 2011 7:21 pm

97 park ave wrote:
lo619 wrote:
97 park ave wrote:
lo619 wrote:
albertj wrote:
lo619 wrote:
So, this morning I decided to clean out the EGR to see if it would help my new to me 95 SC to see if it would idle smoother. When I inspected it It wasn't bad, not clogged or anything, but I proceeded to clean it with carb cleaner. I did not put on a new gasket, because the old one looked fine, I also sprayed a little cleaner down the intake and exhaust holes bolted it pack up, re connected the wire connector and started the car. It ran like sh*t. and then died on me, now when I try to start her she turns over, wants to run but just wont start up.

Did I some how f*** something up? Need some advice guys. puzzled puzzled puzzled puzzled puzzled

I was not aware that carb cleaner was OK to use on an EGR.

Albertj

In my previous vehicle my EGR was blocked with carbon and doing this really helped it to run better. You can clean IAC, MAP and MAF sensors with carb cleaner when they are dirty or have carbon built up.

You absolutely can NOT use anything but MAF cleaner to clean a MAF, this includes carb cleaner. If you used carb cleaner on you MAF its probably junk.

I cleaned my airflow sensor 3 weeks ago with carb cleaner and it ran much better afterwards.. (I get MAP and MAF mixed up)
And now your car isnt running, sounds like it worked great for those 3 weeks though...
rolleyes

You are correct about not using carb cleaner on the maf. It can damage the sensor. If a person can't find maf cleaner, they can use electronic contact cleaner. It is a little easier to find. The car will still run without a maf. It just won't be able to tell how much air is coming into the engine.

Make sure that you plugged everything back in and that you didn't knock anything lose when you took the egr off and cleaned it. Check the vacuum lines, grounds and fuses while your at it. Check the easier stuff first and then move onto the harder solutions.

_________________
1998 Supercharged Riviera - Custom CAI, Alpine spx-13ref, Infinity 6x9's, Alpine 4 Channel Amp, Kicker KX3, Silverstars, STB, Hawk Brake Pads, Monroe Air Shocks, KYB GR2
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lo619
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PostSubject: Re: Cleaned EGR Now car wont start   Tue May 24, 2011 1:30 am

I know i plugged everything back in properly. One thing I did notice is that the harness that connects the EGR, IAC, MAF and the other sensor (the orange one... don't know what this one is?) are aged. The insulation is cracked and wire is slightly exposed near the EGR, The wire is intact, though. The orange male connecter that goes to the throttle body is in pretty bad shape, I had to put pieces of the plastic into it's female connector and plug it in to where the pieces fit. I'm thinking that maybe there is a short or bad connection somewhere that is causing the issue. I'm going to try and get to a junkyard in my city and pull some parts. I don't have a code reader to scan for codes so I'm forced to troubleshoot. What other things should i be checking for?
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albertj
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PostSubject: Re: Cleaned EGR Now car wont start   Tue May 24, 2011 4:29 am

lo619 wrote:
I know i plugged everything back in properly. One thing I did notice is that the harness that connects the EGR, IAC, MAF and the other sensor (the orange one... don't know what this one is?) are aged. The insulation is cracked and wire is slightly exposed near the EGR, The wire is intact, though. The orange male connecter that goes to the throttle body is in pretty bad shape, I had to put pieces of the plastic into it's female connector and plug it in to where the pieces fit. I'm thinking that maybe there is a short or bad connection somewhere that is causing the issue. I'm going to try and get to a junkyard in my city and pull some parts. I don't have a code reader to scan for codes so I'm forced to troubleshoot. What other things should i be checking for?

Do you think you should be checking eBay for a scanner that will work with your Riv?

Do you think you should use a multimeter to backprobe thru connectors to see if the wires with bad insulation have developed resistance? You may need to do some wiring repair. rockauto.com has a fairly extensive stock of repair harness connectors -- you do have to search diligently for them on their site but they are there.
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lo619
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PostSubject: Re: Cleaned EGR Now car wont start   Tue May 24, 2011 11:02 am

I don't have a multimeter, but I'll try and borrow one. to cherck the wiring like you said. I don't know if I can afford a scanner, but i'll look. Thanks. I'm going to the junkyard and I will just cut the wires out of another car when i get the chance and pick up a couple EGR's, and maybe an MAF since the guy said mine might be broken.
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bigdave
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PostSubject: Re: Cleaned EGR Now car wont start   Tue May 24, 2011 4:13 pm

Dont cut the wires if you can help it. You should be able to remove the entire harness in an hour or so. Splicing all those wires could lead to more problems now or in the future
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