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by **GotToGo** » Wed Jan 12, 2011 1:32 pm

Re: 88 2.0L Idle Problem

by GotToGo » Wed Jan 12, 2011 1:32 pm

So which is the reed valve, #1 or #2?

Exhaust Valve3.jpg

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by **camoit** » Wed Jan 12, 2011 2:59 pm

Re: 88 2.0L Idle Problem

by camoit » Wed Jan 12, 2011 2:59 pm

#1 is the valve. The first gen uses a simpler system. You can always test by pluging the rubber line that goes to the air cleaner. Pull the thing off and cap the end that goes to the valve. See how she runs then.

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by **pennyman1** » Fri Jan 14, 2011 7:28 pm

Re: 88 2.0L Idle Problem

by pennyman1 » Fri Jan 14, 2011 7:28 pm

it is a air injection valve that goes from the air cleaner into the exhaust maniford to dilute the exhaust before the second cat. If it sticks open it causes a massive exhaust leak. If you don't have to deal with emissions, remove it and plug the fitting in the exhaust manifold.

Pennyman1
Living the D-50 life since 1980
The best Dodge that Dodge never made

by **GotToGo** » Sun Jan 16, 2011 9:56 am

Re: 88 2.0L Idle Problem

by GotToGo » Sun Jan 16, 2011 9:56 am

I do have emissions here so I guess the unit stays.

I have checked the valve using another vacuum source and it seems to be working fine. I also tried plugging the tube and while there is a small effect on the idle, it doesn't cure my idle surging.

I'm back to square one.

by **DroppedMitsu** » Sun Jan 16, 2011 10:27 am

Re: 88 2.0L Idle Problem

by DroppedMitsu » Sun Jan 16, 2011 10:27 am

If u have an idle surge its most likely a problem in the carb somewhere, where at I don't know but most of the time its somethin in the carb causing it.

-Josh-
1987 Mighty Max with 4g63 Turbo swap
1989 Macrocab Mighty Max

by **pennyman1** » Sun Jan 16, 2011 3:07 pm

Re: 88 2.0L Idle Problem

by pennyman1 » Sun Jan 16, 2011 3:07 pm

Did you check all the vacuum lines to the control box on the fender by the carb. Mice like to crawl in there and eat the tubing where you can't see it. The tubing may also be cracked from age

Pennyman1
Living the D-50 life since 1980
The best Dodge that Dodge never made

by **GotToGo** » Mon Jan 17, 2011 2:46 pm

Re: 88 2.0L Idle Problem

by GotToGo » Mon Jan 17, 2011 2:46 pm

First, I installed a Weber and the same problem occurred, although not as severely. But I think that would indicate it's not a carb problem.

Second, I have checked every inch of vacuum hose and can find no leaks. I also checked the intake manifold for leaks and found none.

I'm stumped, that's why I came here.

I know it appears to be a leak but the way it initially came and went makes me think it's a switch or something that finally gave out. But I'm just guessing.

Any other ideas?

by **GotToGo** » Thu Jan 20, 2011 3:57 pm

Re: 88 2.0L Idle Problem

by GotToGo » Thu Jan 20, 2011 3:57 pm

Anyone?

Anyone?

Beuller?

by **GotToGo** » Tue Apr 12, 2011 12:18 pm

Re: 88 2.0L Idle Problem

by GotToGo » Tue Apr 12, 2011 12:18 pm

If anyone is interested, I finally found the issue.

It was a leak at the intake manifold gasket.

Apparently I wasn't diligent enough when testing for leaks. I replaced the gasket and used a little ht sealer and it's running fine again.

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