Question about 1997 Cadillac DeVille

1 Answer

1997 Cadillac Deville Vin Y hard starting

The car doesn't start when cold and sometimes when warm until cranking for at least 4 or 5 seconds. Have tried new spark plugs and wires, spacers for spark plug wires to get rid of cross firing, and new MAP sensor.

Posted by on

  • 4 more comments 
  • Duane Wong
    Duane Wong Aug 02, 2012

    Stephen- Yes, I pulled the vacuum tube from the fuel pressure regulator on the stainless steel fuel return rail and it was dripping gas. I think this means the rubber is perforated in the fuel regulator, so I ordered a new one from Advance Auto Parts for $55.99 which should be here tomorrow morning at 7:30. In addition, it turns out that I can get a 20% off discount with a p20 coupon code off of the Internet. Good deal. Thanks for your help.

  • Duane Wong
    Duane Wong Aug 02, 2012

    Only thing, is that the fuel pressure regulator has only a one year warranty, so if I keep this car, I can plan on replacing this part again.

  •  Stephen
    Stephen Aug 03, 2012

    glad you found it.

  • Duane Wong
    Duane Wong Aug 03, 2012

    skychief2001 (stephen)- your commen led to the solution for me. I never changed one of these before on a 1990s model Cadillac. I heard that this happens on Suburbans from the 1990s as well.

  • Duane Wong
    Duane Wong Aug 03, 2012

    'comment' rather than 'commen'

  • Duane Wong
    Duane Wong Aug 03, 2012

    Starts up within 1 second now rather than 5 or 10 seconds. And, it wasn't getting any better with time. lol.

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Cadillac Master
  • 21,873 Answers

I would check the fuel pressure. You may have a problem with the fuel pump relay or the one way valve in the pump.

Posted on Jul 31, 2012

  • 11 more comments 
  • Duane Wong
    Duane Wong Aug 02, 2012

    Also, I have read that it could be leaky fuel injectors or a bad fuel pressure regulator.

  •  Stephen
    Stephen Aug 02, 2012

    That is true, but if the fuel is leaking into the cylinders, the plugs should not last long and it should run rough when it finally starts. clearing out the excessive fuel.

  • Duane Wong
    Duane Wong Aug 02, 2012

    When I changed the MAP sensor I noticed gas on the old one which made me think of leaky injectors after I shut the engine off.

  • Duane Wong
    Duane Wong Aug 02, 2012

    Right now it takes 3 to 10 seconds of cranking to start engine when cold. If it is hot it starts immediately. Unless it sits for 15 minutes in which case it takes 3 to 10 seconds of cranking for the engine to start.

  • Duane Wong
    Duane Wong Aug 02, 2012

    I also notice that the RPMs vary from 650 to 750 to 950 after I put a bottle of stp fuel injector cleaner in.

  • Duane Wong
    Duane Wong Aug 02, 2012

    The intake manifold is black plastic on the Northstar engine. I read that the intake manifold should be replaced when overhauling the engine because it is hard to determine if debris got sucked into the passages. But, I do not think this is my problem.

  • Duane Wong
    Duane Wong Aug 02, 2012

    Sometimes it stalls when in gear and coasting. All this with no PCM code set.

  • Duane Wong
    Duane Wong Aug 02, 2012

    Stephen is on the right track.

  • Duane Wong
    Duane Wong Aug 02, 2012

    How can you tell the difference between a leaky injector and a bad fuel pump valve? I seem to have gas in the intake manifold when shut off. The MAP sensor was wet with fuel. Could this point to a leaky injector?

  • Duane Wong
    Duane Wong Aug 02, 2012

    Again the rpm is unstable at idle ranging from 600 rpm to 1000 rpm the last time I ran it.

  •  Stephen
    Stephen Aug 02, 2012

    Depending on where the injectors are mounted, they usually leak directly into the cylinders. The fuel pump valve is a one way valve in the pump to prevent fuel pressure from going back into the tank. Nothing to do with liquid fuel in the engine. The fuel pressure regulator might be leaking into the intake tho.

  • Duane Wong
    Duane Wong Aug 02, 2012

    I will check the fuel pressure regulator for a leaky rubber diaphragm.

  • Duane Wong
    Duane Wong Aug 02, 2012

    I didn't even have to test the pressure to diagnose this one.

×

Ad

3 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Anonymous

  • 4 Answers

SOURCE: 98 Catera goes into "Limp Mode" after warm up.

have you check you ignition coil packs.

Posted on Jul 21, 2009

Carlos Solas

  • 293 Answers

SOURCE: emission problem 1996 sedan deville

I would suggest checking your Oxygen sensor which will light up your service emission light. Check that and let me know Good luck

Posted on Dec 28, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

'98 sierra, k1500, 5.7 won't start until cold crank for 15 seconds


COuld be some problem with the starter, sometimes, when the starter warm, occurs this no start condition.

Aug 23, 2012 | 1998 GMC Jimmy

1 Answer

I've been having trouble with my 95 Deville. It stalls when l'm on the road sometimes and now I can't get it started. I've had it checked at several places and no one can find the problem....


I had a Cadillac under warrantee & had to tell the
dealer what to do,so you know my feelings about them

I suspect the fuel pump failed

The pump running doesn't tell you anything

A pressure gauge on the shrader valve, on the
engine will be a good start & you could drive it
with the gauge taped to the windshield

So all these shops & a dealer,just told you to go home
they don't care? Sadly I know the routine

No you have to make sure your just looking for fuel &
not a bad crank sensor etc. If you get no crank signal
the fuel pump will time out after 10 seconds or whatever

You have to find the right shop,apparently not an easy
feat in your area.

Some vehicles need an oil pressure switch to actuate
the fuel pump

I am just throwing out generic suggestions here,not nec
your cars systems

Jul 01, 2011 | 1995 Cadillac DeVille

2 Answers

I have a 1997 cadillac deville and it keep over heating. i have changed the hose out twice and checked for leaks, plus i my fan is working fine...


Check the waterpump and thermostat. When the waterpump doesn't turn, engine heat is not transported to the radiator. When the thermostat doesn't open once warm the same happens - no engine cooling.

The radiator should be hot op top and cooler at the bottom. If it's cold allover then there's no cooling fluid transport

Jun 29, 2011 | 1997 Cadillac DeVille

1 Answer

Power, but can not start


Try to quickly engage and disengage the starter motor by rotating the key all the way forward and back to ignition on only, and back again several times a second until the starter motor engages.

Sounds like the starter motor solenoid is sticking, maybe.

This happens on my 1997 Cadillac Deville sometimes on hot summer days or even in the winter.

I thought it was the security system, at first, but it is more likely a starter motor going bad.

Apr 13, 2010 | 1996 Cadillac DeVille

1 Answer

Hard starting after engine warmed up. Starts


Check and/or change plugs and wires...or relocate starter relay to inside engine bay...cheers.

Jan 16, 2018 | 1996 Cadillac DeVille

2 Answers

Cold starting problem


How old is your Battery? at the Temp. Stated above an Older Battery even though Good may not have Enough Cold Cranking Amps Left to Kick her Over.

Jan 04, 2009 | 1990 Cadillac Deville

1 Answer

97 Deville cooling


Hmmm... its gotta be the compressor.

Jul 05, 2008 | 1997 Cadillac DeVille

Not finding what you are looking for?
1997 Cadillac DeVille Logo

451 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

Marvin
Marvin

Level 3 Expert

85222 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...