Question about 1994 Dodge Caravan

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94 Carava Acts like its out of gas possible electrical brownout

I have a 94 caravan 3.0l V6 that will run fine, but then randomly act like its running out of gas. At Highway speeds, the engine will kind of Jug and ****, the Speedometer drops down too 10, then jumps back upto the speed im going. If this happens at a red light, it general stalls out. Start it back up, some times it starts up like nothing happened, other times it will hesitate and chug and miss while starting up, and i have to keep the revs up too kept the engine from stalling out. Somtimes when i try and give it gas, it makes no difference.

Now, Im not sure if this would cause all these problems or not, but at the start of the month i found out that I have low compression on the #3 Cylinder, only 50psi where as the rest of them are around 130psi. but this has been an issue for a month, and this new problem started 3 days ago.

I also thought it was an electrical issue because when it bogs down and chugs out, my heater fan goes too half speed, and all the lights, Instrument lights and head lights dim too half brightness as well... Took it too the shop too test the alternator and battery, turns out my battery was dead, replaced that, Lights don't dim anymore, but still stalls out.

When I first got the van, it had a smiler issue with the TPS sensor, this is almost acting the same but not quite. when the TPS sensor connector was dirty, id have too wait 10min to start back up... but could it be the TPS acting up again, or the low compression? Or any other ideas ?

Also noticed when it bogs down at idle, a few of the Relays start Clickin away. and when the issue is midly acting up, the car while idle normaly, and now and thin the revs will pick up as if the computers tryin too keep the engine from stalling out.

Also after playing around, it seems too act up AFter i warm the car up, turn it off and start it again... Seems too trigger the issue. runs Normily till the car is warmed up.

Was told when i bought the car 2 years ago that it had a new fuel pump done on it...

Posted by on

  • reversephase Jan 30, 2009

    So i swaped out the relays that where clicking away when the problem presents its self, And still the problem seems too remain, maybe got a little bit better, not sure as its a intermittint problem, none the less it still pulled a stalling sputtering act.

    Sorry for the possible Double Post

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The cause of the low compression could be a valve is not completly sealing or bad piston rings. Depending on weather you have blue smoke out the exaust. If not then I'm sure you have a valve that is not completly sealing. Not some thing to just let go, first try Z-Max. Z-max helps get rid of carbon deposits in the engine.

The relays that you hear clicking away are the problem Im sure. more than one occasion I have seen the relays go out and cause this problem.

The reason the lights dim and the blower slows is the reduction of voltage the alternator is puting out. When the other problem is fixed then this new one will dissappear.

Try cleaning the throttle position sensor like you said. If the contact is dirty it will not run right.

Please let me know if your problems presist.

Thanks, Charlie

Posted on Jan 29, 2009

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