I've a 2001 Dodge Neon SOHC with 200k+ miles.

110

Asked by Jul 04, 2015 at 05:51 PM about the 2001 Dodge Neon 4 dr Highline ACR

Question type: Maintenance & Repair

It'll crank but not start.  I checked injectors with a noid light, fuel pump with gauge and spark with an electronic ignition tester.  All tested within specs. The engine won't hit a lick.  I'm at a loss what to try next.  Anyone have any ideas?

25 Answers

61,505

Have you checked the crank sensor?

1 out of 1 people think this is helpful.

TRUTH!

61,345

If the crank sensor is good, run a compression test. If all cylinders test low or zero it's jumped timing. HTH. -Jim

110

Yep. Replaced the crank sensor. I've been thinking engine timing as well. This is my daughter's car. It quit on her as she came home from work and wouldn't restart. Since this is an interference engine, would cranking the engine cause mechanical damage?

2 out of 2 people think this is helpful.
61,345

Unfortunately, yes it will. But before condemning the engine, run the compression test to be sure. HTH. -Jim

110

I should have added....I took the head off and didn't see any damage to the valves... I didn't rotate the camshaft...I was concerned with keeping the sucker indexed. This little engine is driving me nuts.....

110

Damage. Ok. Would that be valves being smacked by piston heads? I ran a quick compression test. All cylinders tested 45psi or so and were pretty much the same. I only cranked the engine for a couple seconds for each cylinder.

1 out of 1 people think this is helpful.
110

I'm tired. When I had the head off, the piston heads were in great shape. From what we could tell, the head/valves and piston heads were in surprisingly good shape....

1 out of 1 people think this is helpful.
61,345

Yes, damage meaning pistons smacking the valves. If each cylinder stopped building pressure at 45 PSI either the valve timing is off or the valves are damaged and not sealing correctly. HTH. -Jim

110

Ok. I'll check the compression again Sunday and see what I can get out of them. There was no evidence of any impact when I had the head off. I replaced the timing belt while I was there...it went on exactly as the old one. I assumed I'd be able to tell if the belt had slipped by inspecting the belt itself. It was still in great shape to the point of almost re-installing it. I'll get some sleep and go at it again. I really appreciate your help Jim...

1 out of 1 people think this is helpful.
61,345

You're welcome. Glad to help. Keep us posted. -Jim

110

Well, I'm up and worried about this neon. How much trouble is it to replace bent valves? That's not something that I've done before... Cost is definately a main concern here. I broke my back several years ago and haven't had any income since. Thanks again for any help and/or suggestions....

1 out of 1 people think this is helpful.
61,345

Good morning. It may be cheaper and easier to either get a head from the salvage yard after you've heard the doner engine run or get a rebuilt head. Replacing the valves isn't terribly hard but it does require specialized tools in some cases. Valve seats should be checked, valve guides checked and machined. The head should really be pressure tested and checked for warpage. About 5 years ago I had a pair of heads done at a local machine shop for a '67 Cadillac I was working on. The total cost was $500 for both. Including parts. That's another option. See how much a machine shop wants to rebuild the head you've got. If it's not warped or cracked that may be the way to go. HTH. -Jim

Dodge cars & trucks blow boners, dawg! Cut yer losses and get a reliable Mazda 3!

110

The head was flat, within specs when I replaced the head gasket. The car itself cost my daughter $600. The med bills from breaking my back took all we had. Count your blessings. If I had the money to have someone do the work I'd probably scrap the sucker and find another car for her. Prior to the current condition of the engine, the Neon ran pretty well. She blew a radiator hose and it overheated and quit on the exit ramp. Of course there were bunches of folks upset that she was blocking their way. She was pressured to move the thing and ran it again, blowing the head gasket in the process. It hasn't run since then. I don't know how the timing could have gotten off, but I'll give that a look as well. Point is we're stuck with this car, at least for the time being. If I can't get it running, my daughter will have to keep driving my old Grand Cherokee. Assuming all that's screwed up is the valves, it shouldn't take much to replace those. I guess I just need to yank the head off, again, and take a bit more time evaluating the thing. I have plenty of tools and time.

110

Ok. I didn't get the head all the way off, but I re-checked the timing and it was spot on... I'll finish yanking the head tomorrow.

1 out of 1 people think this is helpful.
61,345

Ok, sounds good. Inspect the valves for proper seating. My guess is you'll find the trouble there. Keep us posted. HTH. -Jim

110

10-4, sounds good. This old man is finished for the day... Thanks!

1 out of 1 people think this is helpful.
61,345

You're welcome. Always glad to help. -Jim

110

Hey Jim: I removed the head and now have it on my bench. At first glance, it still looks fine. I removed the rocker arm asssemblies (intake and exhaust). Again, nothing appears broken. I reinstalled each assembly separately and turned the cam sprocket....nothing jumped out at me. I'll have to figure out how to remove the springs. My universal spring compressor doesn't fit the bill here. What do I need to check while I'm evaluating the head, valves, etc.?

1 out of 1 people think this is helpful.
61,345

You'll want to be sure the valves move freely and seat properly in the combustion chambers. Look for carbon build up in the combustion chambers which will cause the valves not to seat properly. Look for bent valve stems and, if equipped, bent push rods. How's the head gasket look? Any signs of it being blown between two cylinders? All these things, in addition to the valve timing that we discussed will cause the low compression test readings. HTH. -Jim

110

Ok, finally have it apart. I had to build a tool to compress the valves. The intake side valves appear to be in good shape. The exhaust side is kinda dirty but not that bad. I haven't examined the valve stems very closely but offhand, non appear bent. What's a good way to clean the valves, springs, seats, guides, etc.?

61,345

I normally use carburetor cleaner and a brush. You'll want the bristles firm but not too stiff or too soft. HTH. -Jim

110

I'm sorry I haven't kept my updates current. I've been nursing a torn r/c and a bad bout of pneumonia. Getting old isn't fun. Hopefully, I'll get the thing back together within the next day or so and see if compression is better. I still appreciate all they help you've given! Bill

1 out of 1 people think this is helpful.
110

OK. I've had the head resurfaced. I still have the same problem. The car will crank, spark to plugs, noid light on injectors is OK. I finally found a copy of the Service Manual. Within it was the following paragraph: (12) Perform camshaft and crankshaft timing relearn procedure as follows: - Connect the DRB IIIt scan tool to the data link (diagnostic) connector. This connector is located in the passenger compartment; at the lower edge of instrument panel near the steering column. - Turn the ignition switch on. - Access “Engine” diagnostics. - Select “Miscellaneous” option. - Select “ReLearn Cam Crank” option and follow directions on DRBIII screen. Is there a way of performing this "relearn" procedure without the scan tool? I'm also up for any additional ideas on solutions for this vehicle... B

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Neon

Looking for a Used Neon in your area?

CarGurus has 893 nationwide Neon listings and the tools to find you a great deal.

ZIP:

Search Dodge Neon Questions

Dodge Neon Experts

#1 Justin Gilmore
Justin Gilmore
Reputation 1,220
#2 Matt Thibault
Matt Thibault
Reputation 890
#3 Scott Goodyear
Scott Goodyear
Reputation 790
View All

Related Models For Sale

Used Honda Civic
668 Great Deals out of 77,418 listings starting at $1,000
Used Ford Mustang
361 Great Deals out of 44,495 listings starting at $1,000
Used Ford Focus
696 Great Deals out of 58,725 listings starting at $995
Used Chevrolet Camaro
280 Great Deals out of 38,300 listings starting at $1,250
Used Honda Accord
812 Great Deals out of 81,611 listings starting at $899
Used Toyota Corolla
874 Great Deals out of 74,435 listings starting at $1,500
Used Dodge Avenger
162 Great Deals out of 5,534 listings starting at $1,295
Used Chevrolet Cavalier
1,332 listings
Used Chevrolet Malibu
1,008 Great Deals out of 85,694 listings starting at $1,995

Used Cars For Sale