Author Topic: 99 Chevy Tahoe Question (Read 5443 times)

C-Money · « **on:** November 23, 2016, 06:28:16 AM »

So...Our 99 Tahoe would not start the other day. It was running a tad rough at times after a recent trip to Canada. Put some HEET in it with a fill up back here at home, and the rough running quit after a few miles. Problem solved, I thought. We used it a lot over elk season, pulled the utility trailer, etc...After elk season, the Tahoe sat for approx 5 days. I figured I should run it in to town just to turn the wheels on it, and discovered it would not start. Our mechanic figured the fuel pump they put in it last spring went out, so we banged the gas tank and tried to start it like advised , nothing. Tow truck took the Tahoe into town to the mechanics on Monday. Got a call yesterday that the cap and rotor were fowled, and it needs a complete tune up. Ok, the symptoms make sense that they are correct. Here's the BUT.....Before we took the Tahoe to Pennsylvania in 2013, we had some sort of coolant leak fixed that is common on that vintage 350. At that time, we had a complete tune up done on it. Plugs, cap, rotor, wires, & belt. That was at 98,000 miles. Now in 2016, at 116,000 miles, is it normal to need plugs, wires, cap, rotor again so soon? Is there another issue to look for on a stock 99 350? I am not running 2 stroke gas in the thing, I buy 90% of the gas I run in it from the mechanic. I trust this mechanic, and call the owner of the business a friend. Just not sure why the fuel injected 350 would foul out so quick....thanks for the help...

Woodchuck · « **Reply #1 on:** November 23, 2016, 06:32:45 AM »

That is early for another tune if decent parts were used. If it is a spark issue I would start looking at ICM or possibly distributor. Coils are not entirely uncommon.

C-Money · « **Reply #2 on:** November 23, 2016, 06:39:11 AM »

ICM?

Woodchuck · « **Reply #3 on:** November 23, 2016, 06:46:17 AM »

Ignition control module

C-Money · « **Reply #4 on:** November 23, 2016, 06:47:37 AM »

Thank you!

Woodchuck · « **Reply #5 on:** November 23, 2016, 06:58:13 AM »

Good luck man.

Henrydog · « **Reply #6 on:** November 23, 2016, 07:06:08 AM »

That seems way to early for cap and rotor problems. What do the plugs look like. A good mechanic can tell a lot but looking at the burn patterns on the plugs

C-Money · « **Reply #7 on:** November 23, 2016, 08:00:07 AM »

Just spoke to the Mechanic, said there is play in the distributor.... This could cause fouling?

jackelope · « **Reply #8 on:** November 23, 2016, 08:01:57 AM »

Quote from: C-Money on November 23, 2016, 08:00:07 AM

Mechanic said there is play in the distributor....

So it needs a distributor, not a cap and rotor.

C-Money · « **Reply #9 on:** November 23, 2016, 08:09:58 AM »

Said cap, rotor and plugs were all fouled. Gonna have them do a full tune up, and distributor....Cost = OUCH, but its better than a new car payment.

Henrydog · « **Reply #10 on:** November 23, 2016, 08:15:13 AM »

If the distributor moved sounds the time would be retard to the point it would not start.

coachcw · « **Reply #11 on:** November 23, 2016, 08:32:55 AM »

need more info what don't you have , fuel ,spark, air . that thing should make white / blue spark , weak orange spark could foul plugs , they need sixty pounds of fuel pressure to fire . I have seen internal leaks in the injectors but not super common . Id get a fuel gauge on it and see what you have for psi. don't let 55 lbs fool you . if the distributor was out of time it would have set a check engine lamp with a cam correlation code , if the coolant sensor faults it will foul the plugs too you will see -41 on a scanner .

C-Money · « **Reply #12 on:** November 23, 2016, 08:45:37 AM »

Quote from: coachcw on November 23, 2016, 08:32:55 AM

need more info what don't you have , fuel ,spark, air . that thing should make white / blue spark , weak orange spark could foul plugs , they need sixty pounds of fuel pressure to fire . I have seen internal leaks in the injectors but not super common . Id get a fuel gauge on it and see what you have for psi. don't let 55 lbs fool you . if the distributor was out of time it would have set a check engine lamp with a cam correlation code , if the coolant sensor faults it will foul the plugs too you will see -41 on a scanner .

DANG!! I hope the mechanic gets it right. They have a good name....It just doesn't seem right. Hope they checked all that stuff. I wont have any more $$ to get something else fixed after this bill...it will be a while! Why do big repairs come right before Christmas. Like I said before...OUCH!

jackelope · « **Reply #13 on:** November 23, 2016, 08:49:37 AM »

Quote from: C-Money on November 23, 2016, 08:45:37 AM

Quote from: coachcw on November 23, 2016, 08:32:55 AM
need more info what don't you have , fuel ,spark, air . that thing should make white / blue spark , weak orange spark could foul plugs , they need sixty pounds of fuel pressure to fire . I have seen internal leaks in the injectors but not super common . Id get a fuel gauge on it and see what you have for psi. don't let 55 lbs fool you . if the distributor was out of time it would have set a check engine lamp with a cam correlation code , if the coolant sensor faults it will foul the plugs too you will see -41 on a scanner .

DANG!! I hope the mechanic gets it right. They have a good name....It just doesn't seem right. Hope they checked all that stuff. I wont have any more $$ to get something else fixed after this bill...it will be a while! Why do big repairs come right before Christmas. Like I said before...OUCH!

I'd be calling him and questioning it before the work is done. Coach pretty much is a GM wiz... The check engine light/cam correlation code is the kicker there.

C-Money · « **Reply #14 on:** November 23, 2016, 08:58:57 AM »

Right, no check engine light...just would not start.

C-Money · « **Reply #15 on:** November 23, 2016, 09:06:26 AM »

I just called him again...said fuel pressure was fine, defiantly has no spark. Said he will drive it when its done, and re check the fuel pressure... thanks for all the help everyone...glad to have good questions to ask when I talk to him. My boy made the 10u Rep A hockey team as an 8yo, and the Tahoe gets us to the rinks when the weather is bad. So its gotta run!! Once again...I do appreciate all the good advice!!

Buzz2401 · « **Reply #16 on:** November 23, 2016, 10:44:20 AM »

I had that smae engine and did my own tune-up with available parts at autozone. 8 months later I was having same issues as you. Started running funny then came out and it wouldn't even start. Took to mechanic after I couldn't figure it out and he said it was cap and rotor. I said no way I just did that. He said they were cheap parts. He replaced and I didn't have anymore issues. Needless to say no more cheap parts for me.

C-Money · « **Reply #17 on:** November 23, 2016, 10:47:14 AM »

Quote from: Buzz2401 on November 23, 2016, 10:44:20 AM

I had that smae engine and did my own tune-up with available parts at autozone. 8 months later I was having same issues as you. Started running funny then came out and it wouldn't even start. Took to mechanic after I couldn't figure it out and he said it was cap and rotor. I said no way I just did that. He said they were cheap parts. He replaced and I didn't have anymore issues. Needless to say no more cheap parts for me.

Hope she turns out well like in your case Buzz....I gotta take it to Idaho sometime this weekend, will be a good test.

C-Money · « **Reply #18 on:** November 23, 2016, 02:56:58 PM »

Its all done...mechanic said it runs like a top again. I will pick it up after work.

Woodchuck · « **Reply #19 on:** November 23, 2016, 03:03:09 PM »

Happy Gilmore · « **Reply #20 on:** November 23, 2016, 06:59:30 PM »

Two friends had 1999's. One was at 325,000 last time I saw it and another was at 275,000. Both had trannys done but, nothing else. Damn good trucks

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Author Topic: 99 Chevy Tahoe Question (Read 5443 times)

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