350 TPI - hard starting

Charcoal88
0

Asked by Charcoal88 Nov 15, 2008 at 12:55 AM about the 1988 Chevrolet Camaro IROC Z

Question type: Maintenance & Repair

Mother bought new in June 1989. Has always been hard to start, especially when warm. Cranks over lots before firing and smokes. Has alway ran good once started. Car was taken back to dealer many times in the early years but finally just gave up when they never really got it fixed. Car is in pretty good shape with 140K on it but I'm going to give it an overhaul. ONLY if I can get it running great first. Anyone have this problem in the past and/or know what the solution is???

5 Answers

Keith Allen
65

Starter is possibly going bad, they have a issue with heat. Sometimes when its hot outside its hard for them to start. Id try looking there first.

1 out of 1 people think this is helpful.
Seth-Tabitha Hagen
745

I doubt the starter is the problem, since you said that it cranks over alot before starting. I think the problem is in the coolant temperature sensor. ESPECIALLY since it happens more when hot. Usually when the coolant sensor fails, is sends a false reading of "full cold" to the computer. If the engine IS cold, it will start right up, no problem. If the engine is hot, and the computer is receiving the "cold" signal from the sensor, it goes into fuel enrichment mode (the fuel injected equivalent of "choke") this would explain the long crank time and the smoke, since the engine is trying to ignite WAY too much fuel at once. Have someone hook a computer scan tool to the car when the engine is warm and see if the coolant temperature value seems accurate. Remember that the gauge on the dashboard uses a different sensor than the one for the fuel injection computer, so the dashboard gauge is not an accurate way to test this. If you run the car for 10-15 minutes and check the sensor, it should read between 175 and 210 degrees. If it is lower than this, you probably have a faulty sensor. If the scan tool reads something like 40 degrees below zero (-40) that means that the sensor is completely failed, or it is unplugged. Check the sensor connection if you see this reading. Seth (ASE certified Master Auto Technician)

1 out of 1 people think this is helpful.
Keith Allen
65

Yeah that must have been my selective seeing i passed completely over the cranking part *doh*

1 out of 1 people think this is helpful.
Keith Allen
65

I know having one of those cars that they come with a 9th injector, a cold start injector. If the coolant temp sensor is out like set says then it wont stop spraying causing a enrichment. This sensor you can see is located on the driver side head between the #1 and #3 cylinder. There's two sensors one for the temp gauge and one for the ECU make sure you get the right one, if you plan on checking it out or replacing it.

George Purcell
85

If it were me I would check for any trouble codes through the computer using a diagnostic scan tool.

Your Answer

Add photo

Related Questions

Camaro
Looking for a Used Camaro in your area?
CarGurus has 28,777 nationwide Camaro listings starting at $2,399.
ZIP:

Search Chevrolet Camaro Questions

Chevrolet Camaro Experts

#1 dandyoun
dandyoun
Reputation 1,320
#2 carGrrl
carGrrl
Reputation 800
#3 Tom Demyan
Tom Demyan
Reputation 610
View All

Related Models For Sale

Used Ford Mustang"
1,045 Great Deals out of 25,965 listings starting at $1,329
Used Chevrolet Corvette"
324 Great Deals out of 11,190 listings starting at $3,900
Used Dodge Charger"
587 Great Deals out of 30,946 listings starting at $2,950
Used BMW 3 Series"
1,188 Great Deals out of 37,982 listings starting at $1,200
Used Jeep Wrangler"
992 Great Deals out of 45,933 listings starting at $1,800
Used Ford F-150"
2,693 Great Deals out of 168,998 listings starting at $1,495
Used Pontiac Firebird"
15 Great Deals out of 768 listings starting at $1,995

Used Cars For Sale

2014 Chevrolet Camaro For Sale
93 Great Deals out of 8,777 listings starting at $15,958
2013 Chevrolet Camaro For Sale
113 Great Deals out of 2,452 listings starting at $15,999
2012 Chevrolet Camaro For Sale
111 Great Deals out of 1,882 listings starting at $14,980
2011 Chevrolet Camaro For Sale
114 Great Deals out of 2,145 listings starting at $14,495